2928 lines
123 KiB
C++
2928 lines
123 KiB
C++
/*
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* ClusterController.actor.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2019 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <algorithm>
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#include <iterator>
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#include <map>
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#include <set>
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#include <vector>
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#include "fdbrpc/FailureMonitor.h"
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#include "flow/ActorCollection.h"
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#include "fdbclient/NativeAPI.actor.h"
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#include "fdbserver/BackupInterface.h"
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#include "fdbserver/CoordinationInterface.h"
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#include "fdbserver/DataDistributorInterface.h"
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#include "fdbserver/Knobs.h"
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#include "fdbserver/MoveKeys.actor.h"
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#include "fdbserver/WorkerInterface.actor.h"
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#include "fdbserver/LeaderElection.h"
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#include "fdbserver/LogSystemConfig.h"
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#include "fdbserver/WaitFailure.h"
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#include "fdbserver/RatekeeperInterface.h"
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#include "fdbserver/ServerDBInfo.h"
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#include "fdbserver/Status.h"
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#include "fdbserver/LatencyBandConfig.h"
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#include "fdbclient/DatabaseContext.h"
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#include "fdbserver/RecoveryState.h"
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#include "fdbclient/ReadYourWrites.h"
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#include "fdbrpc/Replication.h"
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#include "fdbrpc/ReplicationUtils.h"
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#include "fdbclient/KeyBackedTypes.h"
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#include "flow/Util.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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void failAfter( Future<Void> trigger, Endpoint e );
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struct WorkerInfo : NonCopyable {
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Future<Void> watcher;
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ReplyPromise<RegisterWorkerReply> reply;
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Generation gen;
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int reboots;
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ProcessClass initialClass;
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ClusterControllerPriorityInfo priorityInfo;
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WorkerDetails details;
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Future<Void> haltRatekeeper;
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Future<Void> haltDistributor;
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Standalone<VectorRef<StringRef>> issues;
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WorkerInfo() : gen(-1), reboots(0), priorityInfo(ProcessClass::UnsetFit, false, ClusterControllerPriorityInfo::FitnessUnknown) {}
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WorkerInfo( Future<Void> watcher, ReplyPromise<RegisterWorkerReply> reply, Generation gen, WorkerInterface interf, ProcessClass initialClass, ProcessClass processClass, ClusterControllerPriorityInfo priorityInfo, bool degraded, Standalone<VectorRef<StringRef>> issues ) :
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watcher(watcher), reply(reply), gen(gen), reboots(0), initialClass(initialClass), priorityInfo(priorityInfo), details(interf, processClass, degraded), issues(issues) {}
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WorkerInfo(WorkerInfo&& r) noexcept
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: watcher(std::move(r.watcher)), reply(std::move(r.reply)), gen(r.gen), reboots(r.reboots),
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initialClass(r.initialClass), priorityInfo(r.priorityInfo), details(std::move(r.details)),
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haltRatekeeper(r.haltRatekeeper), haltDistributor(r.haltDistributor), issues(r.issues) {}
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void operator=(WorkerInfo&& r) noexcept {
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watcher = std::move(r.watcher);
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reply = std::move(r.reply);
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gen = r.gen;
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reboots = r.reboots;
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initialClass = r.initialClass;
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priorityInfo = r.priorityInfo;
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details = std::move(r.details);
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haltRatekeeper = r.haltRatekeeper;
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haltDistributor = r.haltDistributor;
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issues = r.issues;
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}
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};
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struct WorkerFitnessInfo {
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WorkerDetails worker;
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ProcessClass::Fitness fitness;
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int used;
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WorkerFitnessInfo() : fitness(ProcessClass::NeverAssign), used(0) {}
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WorkerFitnessInfo(WorkerDetails worker, ProcessClass::Fitness fitness, int used) : worker(worker), fitness(fitness), used(used) {}
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};
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class ClusterControllerData {
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public:
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struct DBInfo {
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Reference<AsyncVar<ClientDBInfo>> clientInfo;
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Reference<AsyncVar<ServerDBInfo>> serverInfo;
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std::map<NetworkAddress, double> incompatibleConnections;
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AsyncTrigger forceMasterFailure;
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int64_t masterRegistrationCount;
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int64_t dbInfoCount;
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bool recoveryStalled;
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bool forceRecovery;
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DatabaseConfiguration config; // Asynchronously updated via master registration
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DatabaseConfiguration fullyRecoveredConfig;
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Database db;
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int unfinishedRecoveries;
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int logGenerations;
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bool cachePopulated;
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std::map<NetworkAddress, std::pair<double, OpenDatabaseRequest>> clientStatus;
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DBInfo() : masterRegistrationCount(0), recoveryStalled(false), forceRecovery(false), unfinishedRecoveries(0), logGenerations(0), cachePopulated(false),
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clientInfo( new AsyncVar<ClientDBInfo>( ClientDBInfo() ) ), dbInfoCount(0),
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serverInfo( new AsyncVar<ServerDBInfo>( ServerDBInfo() ) ),
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db( DatabaseContext::create( clientInfo, Future<Void>(), LocalityData(), true, TaskPriority::DefaultEndpoint, true ) ) // SOMEDAY: Locality!
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{
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}
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void setDistributor(const DataDistributorInterface& interf) {
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auto newInfo = serverInfo->get();
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newInfo.id = deterministicRandom()->randomUniqueID();
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newInfo.infoGeneration = ++dbInfoCount;
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newInfo.distributor = interf;
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serverInfo->set( newInfo );
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}
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void setRatekeeper(const RatekeeperInterface& interf) {
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auto newInfo = serverInfo->get();
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newInfo.id = deterministicRandom()->randomUniqueID();
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newInfo.infoGeneration = ++dbInfoCount;
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newInfo.ratekeeper = interf;
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serverInfo->set( newInfo );
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}
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void clearInterf(ProcessClass::ClassType t) {
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auto newInfo = serverInfo->get();
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newInfo.id = deterministicRandom()->randomUniqueID();
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newInfo.infoGeneration = ++dbInfoCount;
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if (t == ProcessClass::DataDistributorClass) {
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newInfo.distributor = Optional<DataDistributorInterface>();
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} else if (t == ProcessClass::RatekeeperClass) {
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newInfo.ratekeeper = Optional<RatekeeperInterface>();
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}
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serverInfo->set( newInfo );
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}
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};
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struct UpdateWorkerList {
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Future<Void> init( Database const& db ) {
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return update(this, db);
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}
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void set(Optional<Standalone<StringRef>> processID, Optional<ProcessData> data ) {
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delta[processID] = data;
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anyDelta.set(true);
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}
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private:
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std::map<Optional<Standalone<StringRef>>, Optional<ProcessData>> delta;
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AsyncVar<bool> anyDelta;
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ACTOR static Future<Void> update( UpdateWorkerList* self, Database db ) {
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// The Database we are using is based on worker registrations to this cluster controller, which come only
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// from master servers that we started, so it shouldn't be possible for multiple cluster controllers to fight.
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state Transaction tr(db);
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loop {
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try {
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tr.clear( workerListKeys );
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wait( tr.commit() );
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break;
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} catch (Error& e) {
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wait( tr.onError(e) );
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}
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}
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loop {
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// Wait for some changes
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while (!self->anyDelta.get())
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wait( self->anyDelta.onChange() );
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self->anyDelta.set(false);
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state std::map<Optional<Standalone<StringRef>>, Optional<ProcessData>> delta;
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delta.swap( self->delta );
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TraceEvent("UpdateWorkerList").detail("DeltaCount", delta.size());
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// Do a transaction to write the changes
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loop {
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try {
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for(auto w = delta.begin(); w != delta.end(); ++w) {
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if (w->second.present()) {
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tr.set( workerListKeyFor( w->first.get() ), workerListValue( w->second.get()) );
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} else
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tr.clear( workerListKeyFor( w->first.get() ) );
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}
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wait( tr.commit() );
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break;
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} catch (Error& e) {
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wait( tr.onError(e) );
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}
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}
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}
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}
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};
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bool workerAvailable( WorkerInfo const& worker, bool checkStable ) {
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return ( now() - startTime < 2 * FLOW_KNOBS->SERVER_REQUEST_INTERVAL ) || ( IFailureMonitor::failureMonitor().getState(worker.details.interf.storage.getEndpoint()).isAvailable() && ( !checkStable || worker.reboots < 2 ) );
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}
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bool isLongLivedStateless( Optional<Key> const& processId ) {
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return (db.serverInfo->get().distributor.present() && db.serverInfo->get().distributor.get().locality.processId() == processId) ||
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(db.serverInfo->get().ratekeeper.present() && db.serverInfo->get().ratekeeper.get().locality.processId() == processId);
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}
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WorkerDetails getStorageWorker( RecruitStorageRequest const& req ) {
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std::set<Optional<Standalone<StringRef>>> excludedMachines( req.excludeMachines.begin(), req.excludeMachines.end() );
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std::set<Optional<Standalone<StringRef>>> includeDCs( req.includeDCs.begin(), req.includeDCs.end() );
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std::set<AddressExclusion> excludedAddresses( req.excludeAddresses.begin(), req.excludeAddresses.end() );
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for( auto& it : id_worker )
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if( workerAvailable( it.second, false ) &&
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!excludedMachines.count(it.second.details.interf.locality.zoneId()) &&
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( includeDCs.size() == 0 || includeDCs.count(it.second.details.interf.locality.dcId()) ) &&
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!addressExcluded(excludedAddresses, it.second.details.interf.address()) &&
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( !it.second.details.interf.secondaryAddress().present() || !addressExcluded(excludedAddresses, it.second.details.interf.secondaryAddress().get()) ) &&
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it.second.details.processClass.machineClassFitness( ProcessClass::Storage ) <= ProcessClass::UnsetFit ) {
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return it.second.details;
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}
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if( req.criticalRecruitment ) {
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ProcessClass::Fitness bestFit = ProcessClass::NeverAssign;
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Optional<WorkerDetails> bestInfo;
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for( auto& it : id_worker ) {
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ProcessClass::Fitness fit = it.second.details.processClass.machineClassFitness( ProcessClass::Storage );
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if( workerAvailable( it.second, false ) &&
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!excludedMachines.count(it.second.details.interf.locality.zoneId()) &&
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( includeDCs.size() == 0 || includeDCs.count(it.second.details.interf.locality.dcId()) ) &&
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!addressExcluded(excludedAddresses, it.second.details.interf.address()) &&
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fit < bestFit ) {
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bestFit = fit;
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bestInfo = it.second.details;
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}
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}
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if( bestInfo.present() ) {
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return bestInfo.get();
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}
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}
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throw no_more_servers();
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}
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std::vector<WorkerDetails> getWorkersForSeedServers( DatabaseConfiguration const& conf, Reference<IReplicationPolicy> const& policy, Optional<Optional<Standalone<StringRef>>> const& dcId = Optional<Optional<Standalone<StringRef>>>() ) {
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std::map<ProcessClass::Fitness, vector<WorkerDetails>> fitness_workers;
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std::vector<WorkerDetails> results;
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Reference<LocalitySet> logServerSet = Reference<LocalitySet>(new LocalityMap<WorkerDetails>());
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LocalityMap<WorkerDetails>* logServerMap = (LocalityMap<WorkerDetails>*) logServerSet.getPtr();
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bool bCompleted = false;
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for( auto& it : id_worker ) {
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auto fitness = it.second.details.processClass.machineClassFitness( ProcessClass::Storage );
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if( workerAvailable(it.second, false) && !conf.isExcludedServer(it.second.details.interf.addresses()) && fitness != ProcessClass::NeverAssign && ( !dcId.present() || it.second.details.interf.locality.dcId()==dcId.get() ) ) {
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fitness_workers[ fitness ].push_back(it.second.details);
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}
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}
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for( auto& it : fitness_workers ) {
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for (auto& worker : it.second ) {
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logServerMap->add(worker.interf.locality, &worker);
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}
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std::vector<LocalityEntry> bestSet;
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if( logServerSet->selectReplicas(policy, bestSet) ) {
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results.reserve(bestSet.size());
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for (auto& entry : bestSet) {
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auto object = logServerMap->getObject(entry);
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results.push_back(*object);
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}
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bCompleted = true;
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break;
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}
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}
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logServerSet->clear();
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logServerSet.clear();
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if (!bCompleted) {
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throw no_more_servers();
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}
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return results;
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}
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std::vector<WorkerDetails> getWorkersForTlogs( DatabaseConfiguration const& conf, int32_t required, int32_t desired, Reference<IReplicationPolicy> const& policy, std::map< Optional<Standalone<StringRef>>, int>& id_used, bool checkStable = false, std::set<Optional<Key>> dcIds = std::set<Optional<Key>>(), std::vector<UID> exclusionWorkerIds = {}) {
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std::map<std::pair<ProcessClass::Fitness,bool>, vector<WorkerDetails>> fitness_workers;
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std::vector<WorkerDetails> results;
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std::vector<LocalityData> unavailableLocals;
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Reference<LocalitySet> logServerSet;
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LocalityMap<WorkerDetails>* logServerMap;
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bool bCompleted = false;
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logServerSet = Reference<LocalitySet>(new LocalityMap<WorkerDetails>());
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logServerMap = (LocalityMap<WorkerDetails>*) logServerSet.getPtr();
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for( auto& it : id_worker ) {
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if (std::find(exclusionWorkerIds.begin(), exclusionWorkerIds.end(), it.second.details.interf.id()) == exclusionWorkerIds.end()) {
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auto fitness = it.second.details.processClass.machineClassFitness(ProcessClass::TLog);
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if (workerAvailable(it.second, checkStable) && !conf.isExcludedServer(it.second.details.interf.addresses()) && fitness != ProcessClass::NeverAssign && (!dcIds.size() || dcIds.count(it.second.details.interf.locality.dcId()))) {
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fitness_workers[std::make_pair(fitness, it.second.details.degraded)].push_back(it.second.details);
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}
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else {
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unavailableLocals.push_back(it.second.details.interf.locality);
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}
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}
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}
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results.reserve(results.size() + id_worker.size());
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for (int fitness = ProcessClass::BestFit; fitness != ProcessClass::NeverAssign && !bCompleted; fitness++)
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{
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auto fitnessEnum = (ProcessClass::Fitness) fitness;
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for(int addingDegraded = 0; addingDegraded < 2; addingDegraded++) {
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auto workerItr = fitness_workers.find(std::make_pair(fitnessEnum,(bool)addingDegraded));
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if (workerItr != fitness_workers.end()) {
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for (auto& worker : workerItr->second ) {
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logServerMap->add(worker.interf.locality, &worker);
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}
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}
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if (logServerSet->size() < (addingDegraded == 0 ? desired : required)) {
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}
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else if (logServerSet->size() == required || logServerSet->size() <= desired) {
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if (logServerSet->validate(policy)) {
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for (auto& object : logServerMap->getObjects()) {
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results.push_back(*object);
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}
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bCompleted = true;
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break;
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}
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TraceEvent(SevWarn,"GWFTADNotAcceptable", id).detail("Fitness", fitness).detail("Processes", logServerSet->size()).detail("Required", required).detail("TLogPolicy",policy->info()).detail("DesiredLogs", desired).detail("AddingDegraded", addingDegraded);
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}
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// Try to select the desired size, if larger
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else {
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std::vector<LocalityEntry> bestSet;
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std::vector<LocalityData> tLocalities;
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// Try to find the best team of servers to fulfill the policy
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if (findBestPolicySet(bestSet, logServerSet, policy, desired, SERVER_KNOBS->POLICY_RATING_TESTS,
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SERVER_KNOBS->POLICY_GENERATIONS)) {
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results.reserve(results.size() + bestSet.size());
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for (auto& entry : bestSet) {
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auto object = logServerMap->getObject(entry);
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ASSERT(object);
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results.push_back(*object);
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tLocalities.push_back(object->interf.locality);
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}
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TraceEvent("GWFTADBestResults", id).detail("Fitness", fitness).detail("Processes", logServerSet->size()).detail("BestCount", bestSet.size()).detail("BestZones", ::describeZones(tLocalities))
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.detail("BestDataHalls", ::describeDataHalls(tLocalities)).detail("TLogPolicy", policy->info()).detail("TotalResults", results.size()).detail("DesiredLogs", desired).detail("AddingDegraded", addingDegraded);
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bCompleted = true;
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break;
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}
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TraceEvent(SevWarn,"GWFTADNoBest", id).detail("Fitness", fitness).detail("Processes", logServerSet->size()).detail("Required", required).detail("TLogPolicy", policy->info()).detail("DesiredLogs", desired).detail("AddingDegraded", addingDegraded);
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}
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}
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}
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// If policy cannot be satisfied
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if (!bCompleted) {
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std::vector<LocalityData> tLocalities;
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for (auto& object : logServerMap->getObjects()) {
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tLocalities.push_back(object->interf.locality);
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}
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TraceEvent(SevWarn, "GetTLogTeamFailed").detail("Policy", policy->info()).detail("Processes", logServerSet->size()).detail("Workers", id_worker.size()).detail("FitnessGroups", fitness_workers.size())
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.detail("TLogZones", ::describeZones(tLocalities)).detail("TLogDataHalls", ::describeDataHalls(tLocalities)).detail("MissingZones", ::describeZones(unavailableLocals))
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.detail("MissingDataHalls", ::describeDataHalls(unavailableLocals)).detail("Required", required).detail("DesiredLogs", desired).detail("RatingTests",SERVER_KNOBS->POLICY_RATING_TESTS)
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.detail("CheckStable", checkStable).detail("NumExclusionWorkers", exclusionWorkerIds.size()).detail("PolicyGenerations",SERVER_KNOBS->POLICY_GENERATIONS).backtrace();
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logServerSet->clear();
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logServerSet.clear();
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throw no_more_servers();
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}
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for (auto& result : results) {
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id_used[result.interf.locality.processId()]++;
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}
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TraceEvent("GetTLogTeamDone").detail("Completed", bCompleted).detail("Policy", policy->info()).detail("Results", results.size()).detail("Processes", logServerSet->size()).detail("Workers", id_worker.size())
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.detail("Required", required).detail("Desired", desired).detail("RatingTests",SERVER_KNOBS->POLICY_RATING_TESTS).detail("PolicyGenerations",SERVER_KNOBS->POLICY_GENERATIONS);
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return results;
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}
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//FIXME: This logic will fallback unnecessarily when usable dcs > 1 because it does not check all combinations of potential satellite locations
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std::vector<WorkerDetails> getWorkersForSatelliteLogs( const DatabaseConfiguration& conf, const RegionInfo& region, const RegionInfo& remoteRegion, std::map< Optional<Standalone<StringRef>>, int>& id_used, bool& satelliteFallback, bool checkStable = false ) {
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int startDC = 0;
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loop {
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if(startDC > 0 && startDC >= region.satellites.size() + 1 - (satelliteFallback ? region.satelliteTLogUsableDcsFallback : region.satelliteTLogUsableDcs)) {
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if(satelliteFallback || region.satelliteTLogUsableDcsFallback == 0) {
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throw no_more_servers();
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} else {
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if(!goodRecruitmentTime.isReady()) {
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throw operation_failed();
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}
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satelliteFallback = true;
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startDC = 0;
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}
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}
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try {
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bool remoteDCUsedAsSatellite = false;
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std::set<Optional<Key>> satelliteDCs;
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int32_t desiredSatelliteTLogs = 0;
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for(int s = startDC; s < std::min<int>(startDC + (satelliteFallback ? region.satelliteTLogUsableDcsFallback : region.satelliteTLogUsableDcs), region.satellites.size()); s++) {
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satelliteDCs.insert(region.satellites[s].dcId);
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if(region.satellites[s].satelliteDesiredTLogCount == -1 || desiredSatelliteTLogs == -1) {
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desiredSatelliteTLogs = -1;
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} else {
|
|
desiredSatelliteTLogs += region.satellites[s].satelliteDesiredTLogCount;
|
|
}
|
|
if (region.satellites[s].dcId == remoteRegion.dcId) {
|
|
remoteDCUsedAsSatellite = true;
|
|
}
|
|
}
|
|
std::vector<UID> exclusionWorkerIds;
|
|
// FIXME: If remote DC is used as satellite then this logic only ensures that required number of remote TLogs can be recruited. It does not balance the number of desired TLogs
|
|
// across the satellite and remote sides.
|
|
if (remoteDCUsedAsSatellite) {
|
|
std::map< Optional<Standalone<StringRef>>, int> tmpIdUsed;
|
|
auto remoteLogs = getWorkersForTlogs(conf, conf.getRemoteTLogReplicationFactor(), conf.getRemoteTLogReplicationFactor(), conf.getRemoteTLogPolicy(), tmpIdUsed, false, { remoteRegion.dcId }, {});
|
|
std::transform(remoteLogs.begin(), remoteLogs.end(), std::back_inserter(exclusionWorkerIds), [](const WorkerDetails &in) { return in.interf.id(); });
|
|
}
|
|
if(satelliteFallback) {
|
|
return getWorkersForTlogs( conf, region.satelliteTLogReplicationFactorFallback, desiredSatelliteTLogs>0 ? desiredSatelliteTLogs : conf.getDesiredSatelliteLogs(region.dcId)*region.satelliteTLogUsableDcsFallback/region.satelliteTLogUsableDcs, region.satelliteTLogPolicyFallback, id_used, checkStable, satelliteDCs, exclusionWorkerIds);
|
|
} else {
|
|
return getWorkersForTlogs( conf, region.satelliteTLogReplicationFactor, desiredSatelliteTLogs>0 ? desiredSatelliteTLogs : conf.getDesiredSatelliteLogs(region.dcId), region.satelliteTLogPolicy, id_used, checkStable, satelliteDCs, exclusionWorkerIds);
|
|
}
|
|
} catch (Error &e) {
|
|
if(e.code() != error_code_no_more_servers) {
|
|
throw;
|
|
}
|
|
}
|
|
|
|
startDC++;
|
|
}
|
|
}
|
|
|
|
ProcessClass::Fitness getBestFitnessForRoleInDatacenter(ProcessClass::ClusterRole role) {
|
|
ProcessClass::Fitness bestFitness = ProcessClass::NeverAssign;
|
|
for (const auto& it : id_worker) {
|
|
if (it.second.priorityInfo.isExcluded || it.second.details.interf.locality.dcId() != clusterControllerDcId) {
|
|
continue;
|
|
}
|
|
bestFitness = std::min(bestFitness, it.second.details.processClass.machineClassFitness(role));
|
|
}
|
|
return bestFitness;
|
|
}
|
|
|
|
WorkerFitnessInfo getWorkerForRoleInDatacenter(Optional<Standalone<StringRef>> const& dcId, ProcessClass::ClusterRole role, ProcessClass::Fitness unacceptableFitness, DatabaseConfiguration const& conf, std::map< Optional<Standalone<StringRef>>, int>& id_used, bool checkStable = false ) {
|
|
std::map<std::pair<ProcessClass::Fitness,int>, std::pair<vector<WorkerDetails>,vector<WorkerDetails>>> fitness_workers;
|
|
|
|
for( auto& it : id_worker ) {
|
|
auto fitness = it.second.details.processClass.machineClassFitness( role );
|
|
if(conf.isExcludedServer(it.second.details.interf.addresses())) {
|
|
fitness = std::max(fitness, ProcessClass::ExcludeFit);
|
|
}
|
|
if( workerAvailable(it.second, checkStable) && fitness < unacceptableFitness && it.second.details.interf.locality.dcId()==dcId ) {
|
|
if (isLongLivedStateless(it.first)) {
|
|
fitness_workers[ std::make_pair(fitness, id_used[it.first]) ].second.push_back(it.second.details);
|
|
} else {
|
|
fitness_workers[ std::make_pair(fitness, id_used[it.first]) ].first.push_back(it.second.details);
|
|
}
|
|
}
|
|
}
|
|
|
|
for( auto& it : fitness_workers ) {
|
|
for( int j=0; j < 2; j++ ) {
|
|
auto& w = j==0 ? it.second.first : it.second.second;
|
|
deterministicRandom()->randomShuffle(w);
|
|
for( int i=0; i < w.size(); i++ ) {
|
|
id_used[w[i].interf.locality.processId()]++;
|
|
return WorkerFitnessInfo(w[i], std::max(ProcessClass::GoodFit, it.first.first), it.first.second);
|
|
}
|
|
}
|
|
}
|
|
|
|
throw no_more_servers();
|
|
}
|
|
|
|
vector<WorkerDetails> getWorkersForRoleInDatacenter(Optional<Standalone<StringRef>> const& dcId, ProcessClass::ClusterRole role, int amount, DatabaseConfiguration const& conf, std::map< Optional<Standalone<StringRef>>, int>& id_used, Optional<WorkerFitnessInfo> minWorker = Optional<WorkerFitnessInfo>(), bool checkStable = false ) {
|
|
std::map<std::pair<ProcessClass::Fitness,int>, std::pair<vector<WorkerDetails>,vector<WorkerDetails>>> fitness_workers;
|
|
vector<WorkerDetails> results;
|
|
if(minWorker.present()) {
|
|
results.push_back(minWorker.get().worker);
|
|
}
|
|
if (amount <= results.size()) {
|
|
return results;
|
|
}
|
|
|
|
for( auto& it : id_worker ) {
|
|
auto fitness = it.second.details.processClass.machineClassFitness( role );
|
|
if( workerAvailable(it.second, checkStable) && !conf.isExcludedServer(it.second.details.interf.addresses()) && it.second.details.interf.locality.dcId() == dcId &&
|
|
( !minWorker.present() || ( it.second.details.interf.id() != minWorker.get().worker.interf.id() && ( fitness < minWorker.get().fitness || (fitness == minWorker.get().fitness && id_used[it.first] <= minWorker.get().used ) ) ) ) ) {
|
|
if (isLongLivedStateless(it.first)) {
|
|
fitness_workers[ std::make_pair(fitness, id_used[it.first]) ].second.push_back(it.second.details);
|
|
} else {
|
|
fitness_workers[ std::make_pair(fitness, id_used[it.first]) ].first.push_back(it.second.details);
|
|
}
|
|
}
|
|
}
|
|
|
|
for( auto& it : fitness_workers ) {
|
|
for( int j=0; j < 2; j++ ) {
|
|
auto& w = j==0 ? it.second.first : it.second.second;
|
|
deterministicRandom()->randomShuffle(w);
|
|
for( int i=0; i < w.size(); i++ ) {
|
|
results.push_back(w[i]);
|
|
id_used[w[i].interf.locality.processId()]++;
|
|
if( results.size() == amount )
|
|
return results;
|
|
}
|
|
}
|
|
}
|
|
|
|
return results;
|
|
}
|
|
|
|
struct RoleFitness {
|
|
ProcessClass::Fitness bestFit;
|
|
ProcessClass::Fitness worstFit;
|
|
ProcessClass::ClusterRole role;
|
|
int count;
|
|
bool worstIsDegraded;
|
|
|
|
RoleFitness(int bestFit, int worstFit, int count, ProcessClass::ClusterRole role) : bestFit((ProcessClass::Fitness)bestFit), worstFit((ProcessClass::Fitness)worstFit), count(count), role(role), worstIsDegraded(false) {}
|
|
|
|
RoleFitness(int fitness, int count, ProcessClass::ClusterRole role) : bestFit((ProcessClass::Fitness)fitness), worstFit((ProcessClass::Fitness)fitness), count(count), role(role), worstIsDegraded(false) {}
|
|
|
|
RoleFitness() : bestFit(ProcessClass::NeverAssign), worstFit(ProcessClass::NeverAssign), role(ProcessClass::NoRole), count(0), worstIsDegraded(false) {}
|
|
|
|
RoleFitness( vector<WorkerDetails> workers, ProcessClass::ClusterRole role ) : role(role) {
|
|
worstFit = ProcessClass::GoodFit;
|
|
worstIsDegraded = false;
|
|
bestFit = ProcessClass::NeverAssign;
|
|
for(auto& it : workers) {
|
|
auto thisFit = it.processClass.machineClassFitness( role );
|
|
if(thisFit > worstFit) {
|
|
worstFit = thisFit;
|
|
worstIsDegraded = it.degraded;
|
|
} else if(thisFit == worstFit) {
|
|
worstIsDegraded = worstIsDegraded || it.degraded;
|
|
}
|
|
bestFit = std::min(bestFit, thisFit);
|
|
}
|
|
count = workers.size();
|
|
//degraded is only used for recruitment of tlogs
|
|
if(role != ProcessClass::TLog) {
|
|
worstIsDegraded = false;
|
|
}
|
|
}
|
|
|
|
bool operator < (RoleFitness const& r) const {
|
|
if (worstFit != r.worstFit) return worstFit < r.worstFit;
|
|
if (worstIsDegraded != r.worstIsDegraded) return r.worstIsDegraded;
|
|
// FIXME: TLog recruitment process does not guarantee the best fit is not worsened.
|
|
if (role != ProcessClass::TLog && role != ProcessClass::LogRouter && bestFit != r.bestFit) return bestFit < r.bestFit;
|
|
return count > r.count;
|
|
}
|
|
|
|
bool betterFitness (RoleFitness const& r) const {
|
|
if (worstFit != r.worstFit) return worstFit < r.worstFit;
|
|
if (worstIsDegraded != r.worstIsDegraded) return r.worstFit;
|
|
if (bestFit != r.bestFit) return bestFit < r.bestFit;
|
|
return false;
|
|
}
|
|
|
|
bool betterCount (RoleFitness const& r) const {
|
|
if(count > r.count) return true;
|
|
if(worstFit != r.worstFit) return worstFit < r.worstFit;
|
|
if (worstIsDegraded != r.worstIsDegraded) return r.worstFit;
|
|
return false;
|
|
}
|
|
|
|
bool operator == (RoleFitness const& r) const { return worstFit == r.worstFit && bestFit == r.bestFit && count == r.count && worstIsDegraded == r.worstIsDegraded; }
|
|
|
|
std::string toString() const { return format("%d %d %d %d", bestFit, worstFit, count, worstIsDegraded); }
|
|
};
|
|
|
|
struct RoleFitnessPair {
|
|
RoleFitness proxy;
|
|
RoleFitness resolver;
|
|
|
|
RoleFitnessPair() {}
|
|
RoleFitnessPair(RoleFitness const& proxy, RoleFitness const& resolver) : proxy(proxy), resolver(resolver) {}
|
|
|
|
bool operator < (RoleFitnessPair const& r) const {
|
|
if(proxy.betterFitness(r.proxy)) {
|
|
return true;
|
|
}
|
|
if(r.proxy.betterFitness(proxy)) {
|
|
return false;
|
|
}
|
|
if(resolver.betterFitness(r.resolver)) {
|
|
return true;
|
|
}
|
|
if(r.resolver.betterFitness(resolver)) {
|
|
return false;
|
|
}
|
|
if(proxy.count != r.proxy.count) {
|
|
return proxy.count > r.proxy.count;
|
|
}
|
|
return resolver.count > r.resolver.count;
|
|
}
|
|
|
|
bool operator == (RoleFitnessPair const& r) const { return proxy == r.proxy && resolver == r.resolver; }
|
|
};
|
|
|
|
std::set<Optional<Standalone<StringRef>>> getDatacenters( DatabaseConfiguration const& conf, bool checkStable = false ) {
|
|
std::set<Optional<Standalone<StringRef>>> result;
|
|
for( auto& it : id_worker )
|
|
if( workerAvailable( it.second, checkStable ) && !conf.isExcludedServer( it.second.details.interf.addresses() ) )
|
|
result.insert(it.second.details.interf.locality.dcId());
|
|
return result;
|
|
}
|
|
|
|
void updateKnownIds(std::map< Optional<Standalone<StringRef>>, int>* id_used) {
|
|
(*id_used)[masterProcessId]++;
|
|
(*id_used)[clusterControllerProcessId]++;
|
|
}
|
|
|
|
RecruitRemoteFromConfigurationReply findRemoteWorkersForConfiguration( RecruitRemoteFromConfigurationRequest const& req ) {
|
|
RecruitRemoteFromConfigurationReply result;
|
|
std::map< Optional<Standalone<StringRef>>, int> id_used;
|
|
|
|
updateKnownIds(&id_used);
|
|
|
|
std::set<Optional<Key>> remoteDC;
|
|
remoteDC.insert(req.dcId);
|
|
|
|
auto remoteLogs = getWorkersForTlogs( req.configuration, req.configuration.getRemoteTLogReplicationFactor(), req.configuration.getDesiredRemoteLogs(), req.configuration.getRemoteTLogPolicy(), id_used, false, remoteDC, req.exclusionWorkerIds );
|
|
for(int i = 0; i < remoteLogs.size(); i++) {
|
|
result.remoteTLogs.push_back(remoteLogs[i].interf);
|
|
}
|
|
|
|
auto logRouters = getWorkersForRoleInDatacenter( req.dcId, ProcessClass::LogRouter, req.logRouterCount, req.configuration, id_used );
|
|
for(int i = 0; i < logRouters.size(); i++) {
|
|
result.logRouters.push_back(logRouters[i].interf);
|
|
}
|
|
|
|
|
|
if( !goodRemoteRecruitmentTime.isReady() &&
|
|
( ( RoleFitness(SERVER_KNOBS->EXPECTED_TLOG_FITNESS, req.configuration.getDesiredRemoteLogs(), ProcessClass::TLog).betterCount(RoleFitness(remoteLogs, ProcessClass::TLog)) ) ||
|
|
( RoleFitness(SERVER_KNOBS->EXPECTED_LOG_ROUTER_FITNESS, req.logRouterCount, ProcessClass::LogRouter).betterCount(RoleFitness(logRouters, ProcessClass::LogRouter)) ) ) ) {
|
|
throw operation_failed();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
ErrorOr<RecruitFromConfigurationReply> findWorkersForConfiguration( RecruitFromConfigurationRequest const& req, Optional<Key> dcId ) {
|
|
RecruitFromConfigurationReply result;
|
|
std::map< Optional<Standalone<StringRef>>, int> id_used;
|
|
updateKnownIds(&id_used);
|
|
|
|
ASSERT(dcId.present());
|
|
|
|
std::set<Optional<Key>> primaryDC;
|
|
primaryDC.insert(dcId);
|
|
result.dcId = dcId;
|
|
|
|
RegionInfo region;
|
|
RegionInfo remoteRegion;
|
|
for(auto& r : req.configuration.regions) {
|
|
if(r.dcId == dcId.get()) {
|
|
region = r;
|
|
}
|
|
else {
|
|
remoteRegion = r;
|
|
}
|
|
}
|
|
|
|
if(req.recruitSeedServers) {
|
|
auto primaryStorageServers = getWorkersForSeedServers( req.configuration, req.configuration.storagePolicy, dcId );
|
|
for(int i = 0; i < primaryStorageServers.size(); i++) {
|
|
result.storageServers.push_back(primaryStorageServers[i].interf);
|
|
}
|
|
}
|
|
|
|
auto tlogs = getWorkersForTlogs( req.configuration, req.configuration.tLogReplicationFactor, req.configuration.getDesiredLogs(), req.configuration.tLogPolicy, id_used, false, primaryDC );
|
|
for(int i = 0; i < tlogs.size(); i++) {
|
|
result.tLogs.push_back(tlogs[i].interf);
|
|
}
|
|
|
|
std::vector<WorkerDetails> satelliteLogs;
|
|
if(region.satelliteTLogReplicationFactor > 0 && req.configuration.usableRegions > 1) {
|
|
satelliteLogs = getWorkersForSatelliteLogs( req.configuration, region, remoteRegion, id_used, result.satelliteFallback );
|
|
for(int i = 0; i < satelliteLogs.size(); i++) {
|
|
result.satelliteTLogs.push_back(satelliteLogs[i].interf);
|
|
}
|
|
}
|
|
|
|
auto first_resolver = getWorkerForRoleInDatacenter( dcId, ProcessClass::Resolver, ProcessClass::ExcludeFit, req.configuration, id_used );
|
|
auto first_proxy = getWorkerForRoleInDatacenter( dcId, ProcessClass::Proxy, ProcessClass::ExcludeFit, req.configuration, id_used );
|
|
|
|
auto proxies = getWorkersForRoleInDatacenter( dcId, ProcessClass::Proxy, req.configuration.getDesiredProxies(), req.configuration, id_used, first_proxy );
|
|
auto resolvers = getWorkersForRoleInDatacenter( dcId, ProcessClass::Resolver, req.configuration.getDesiredResolvers(), req.configuration, id_used, first_resolver );
|
|
|
|
for(int i = 0; i < resolvers.size(); i++)
|
|
result.resolvers.push_back(resolvers[i].interf);
|
|
for(int i = 0; i < proxies.size(); i++)
|
|
result.proxies.push_back(proxies[i].interf);
|
|
|
|
if(req.maxOldLogRouters > 0) {
|
|
if(tlogs.size() == 1) {
|
|
result.oldLogRouters.push_back(tlogs[0].interf);
|
|
} else {
|
|
for(int i = 0; i < tlogs.size(); i++) {
|
|
if(tlogs[i].interf.locality.processId() != clusterControllerProcessId) {
|
|
result.oldLogRouters.push_back(tlogs[i].interf);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (req.configuration.backupWorkerEnabled) {
|
|
const int nBackup = std::max<int>(
|
|
(req.configuration.desiredLogRouterCount > 0 ? req.configuration.desiredLogRouterCount : tlogs.size()),
|
|
req.maxOldLogRouters);
|
|
auto backupWorkers =
|
|
getWorkersForRoleInDatacenter(dcId, ProcessClass::Backup, nBackup, req.configuration, id_used);
|
|
std::transform(backupWorkers.begin(), backupWorkers.end(), std::back_inserter(result.backupWorkers),
|
|
[](const WorkerDetails& w) { return w.interf; });
|
|
}
|
|
|
|
if( !goodRecruitmentTime.isReady() &&
|
|
( RoleFitness(SERVER_KNOBS->EXPECTED_TLOG_FITNESS, req.configuration.getDesiredLogs(), ProcessClass::TLog).betterCount(RoleFitness(tlogs, ProcessClass::TLog)) ||
|
|
( region.satelliteTLogReplicationFactor > 0 && req.configuration.usableRegions > 1 && RoleFitness(SERVER_KNOBS->EXPECTED_TLOG_FITNESS, req.configuration.getDesiredSatelliteLogs(dcId), ProcessClass::TLog).betterCount(RoleFitness(satelliteLogs, ProcessClass::TLog)) ) ||
|
|
RoleFitness(SERVER_KNOBS->EXPECTED_PROXY_FITNESS, req.configuration.getDesiredProxies(), ProcessClass::Proxy).betterCount(RoleFitness(proxies, ProcessClass::Proxy)) ||
|
|
RoleFitness(SERVER_KNOBS->EXPECTED_RESOLVER_FITNESS, req.configuration.getDesiredResolvers(), ProcessClass::Resolver).betterCount(RoleFitness(resolvers, ProcessClass::Resolver)) ) ) {
|
|
return operation_failed();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
RecruitFromConfigurationReply findWorkersForConfiguration( RecruitFromConfigurationRequest const& req ) {
|
|
if(req.configuration.regions.size() > 1) {
|
|
std::vector<RegionInfo> regions = req.configuration.regions;
|
|
if(regions[0].priority == regions[1].priority && regions[1].dcId == clusterControllerDcId.get()) {
|
|
std::swap(regions[0], regions[1]);
|
|
}
|
|
|
|
if(regions[1].dcId == clusterControllerDcId.get() && regions[1].priority >= 0 && (!versionDifferenceUpdated || datacenterVersionDifference >= SERVER_KNOBS->MAX_VERSION_DIFFERENCE)) {
|
|
std::swap(regions[0], regions[1]);
|
|
}
|
|
|
|
bool setPrimaryDesired = false;
|
|
try {
|
|
auto reply = findWorkersForConfiguration(req, regions[0].dcId);
|
|
setPrimaryDesired = true;
|
|
vector<Optional<Key>> dcPriority;
|
|
dcPriority.push_back(regions[0].dcId);
|
|
dcPriority.push_back(regions[1].dcId);
|
|
desiredDcIds.set(dcPriority);
|
|
if(reply.isError()) {
|
|
throw reply.getError();
|
|
} else if(regions[0].dcId == clusterControllerDcId.get()) {
|
|
return reply.get();
|
|
}
|
|
throw no_more_servers();
|
|
} catch( Error& e ) {
|
|
if (!goodRemoteRecruitmentTime.isReady() && regions[1].dcId != clusterControllerDcId.get()) {
|
|
throw operation_failed();
|
|
}
|
|
|
|
if (e.code() != error_code_no_more_servers || regions[1].priority < 0) {
|
|
throw;
|
|
}
|
|
TraceEvent(SevWarn, "AttemptingRecruitmentInRemoteDC", id).error(e);
|
|
auto reply = findWorkersForConfiguration(req, regions[1].dcId);
|
|
if(!setPrimaryDesired) {
|
|
vector<Optional<Key>> dcPriority;
|
|
dcPriority.push_back(regions[1].dcId);
|
|
dcPriority.push_back(regions[0].dcId);
|
|
desiredDcIds.set(dcPriority);
|
|
}
|
|
if(reply.isError()) {
|
|
throw reply.getError();
|
|
} else if (regions[1].dcId == clusterControllerDcId.get()) {
|
|
return reply.get();
|
|
}
|
|
throw;
|
|
}
|
|
} else if(req.configuration.regions.size() == 1) {
|
|
vector<Optional<Key>> dcPriority;
|
|
dcPriority.push_back(req.configuration.regions[0].dcId);
|
|
desiredDcIds.set(dcPriority);
|
|
auto reply = findWorkersForConfiguration(req, req.configuration.regions[0].dcId);
|
|
if(reply.isError()) {
|
|
throw reply.getError();
|
|
} else if (req.configuration.regions[0].dcId == clusterControllerDcId.get()) {
|
|
return reply.get();
|
|
}
|
|
throw no_more_servers();
|
|
} else {
|
|
RecruitFromConfigurationReply result;
|
|
std::map< Optional<Standalone<StringRef>>, int> id_used;
|
|
updateKnownIds(&id_used);
|
|
auto tlogs = getWorkersForTlogs( req.configuration, req.configuration.tLogReplicationFactor, req.configuration.getDesiredLogs(), req.configuration.tLogPolicy, id_used );
|
|
for(int i = 0; i < tlogs.size(); i++) {
|
|
result.tLogs.push_back(tlogs[i].interf);
|
|
}
|
|
|
|
if(req.maxOldLogRouters > 0) {
|
|
if(tlogs.size() == 1) {
|
|
result.oldLogRouters.push_back(tlogs[0].interf);
|
|
} else {
|
|
for(int i = 0; i < tlogs.size(); i++) {
|
|
if(tlogs[i].interf.locality.processId() != clusterControllerProcessId) {
|
|
result.oldLogRouters.push_back(tlogs[i].interf);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(req.recruitSeedServers) {
|
|
auto primaryStorageServers = getWorkersForSeedServers( req.configuration, req.configuration.storagePolicy );
|
|
for(int i = 0; i < primaryStorageServers.size(); i++)
|
|
result.storageServers.push_back(primaryStorageServers[i].interf);
|
|
}
|
|
|
|
auto datacenters = getDatacenters( req.configuration );
|
|
|
|
RoleFitnessPair bestFitness;
|
|
int numEquivalent = 1;
|
|
Optional<Key> bestDC;
|
|
|
|
for(auto dcId : datacenters ) {
|
|
try {
|
|
//SOMEDAY: recruitment in other DCs besides the clusterControllerDcID will not account for the processes used by the master and cluster controller properly.
|
|
auto used = id_used;
|
|
auto first_resolver = getWorkerForRoleInDatacenter( dcId, ProcessClass::Resolver, ProcessClass::ExcludeFit, req.configuration, used );
|
|
auto first_proxy = getWorkerForRoleInDatacenter( dcId, ProcessClass::Proxy, ProcessClass::ExcludeFit, req.configuration, used );
|
|
|
|
auto proxies = getWorkersForRoleInDatacenter( dcId, ProcessClass::Proxy, req.configuration.getDesiredProxies(), req.configuration, used, first_proxy );
|
|
auto resolvers = getWorkersForRoleInDatacenter( dcId, ProcessClass::Resolver, req.configuration.getDesiredResolvers(), req.configuration, used, first_resolver );
|
|
|
|
RoleFitnessPair fitness( RoleFitness(proxies, ProcessClass::Proxy), RoleFitness(resolvers, ProcessClass::Resolver) );
|
|
|
|
if(dcId == clusterControllerDcId) {
|
|
bestFitness = fitness;
|
|
bestDC = dcId;
|
|
for(int i = 0; i < resolvers.size(); i++)
|
|
result.resolvers.push_back(resolvers[i].interf);
|
|
for(int i = 0; i < proxies.size(); i++)
|
|
result.proxies.push_back(proxies[i].interf);
|
|
|
|
if (req.configuration.backupWorkerEnabled) {
|
|
const int nBackup = std::max<int>(tlogs.size(), req.maxOldLogRouters);
|
|
auto backupWorkers = getWorkersForRoleInDatacenter(dcId, ProcessClass::Backup, nBackup,
|
|
req.configuration, id_used);
|
|
std::transform(backupWorkers.begin(), backupWorkers.end(),
|
|
std::back_inserter(result.backupWorkers),
|
|
[](const WorkerDetails& w) { return w.interf; });
|
|
}
|
|
|
|
break;
|
|
} else {
|
|
if(fitness < bestFitness) {
|
|
bestFitness = fitness;
|
|
numEquivalent = 1;
|
|
bestDC = dcId;
|
|
} else if( fitness == bestFitness && deterministicRandom()->random01() < 1.0/++numEquivalent ) {
|
|
bestDC = dcId;
|
|
}
|
|
}
|
|
} catch( Error &e ) {
|
|
if(e.code() != error_code_no_more_servers) {
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(bestDC != clusterControllerDcId) {
|
|
vector<Optional<Key>> dcPriority;
|
|
dcPriority.push_back(bestDC);
|
|
desiredDcIds.set(dcPriority);
|
|
throw no_more_servers();
|
|
}
|
|
//If this cluster controller dies, do not prioritize recruiting the next one in the same DC
|
|
desiredDcIds.set(vector<Optional<Key>>());
|
|
TraceEvent("FindWorkersForConfig").detail("Replication", req.configuration.tLogReplicationFactor)
|
|
.detail("DesiredLogs", req.configuration.getDesiredLogs()).detail("ActualLogs", result.tLogs.size())
|
|
.detail("DesiredProxies", req.configuration.getDesiredProxies()).detail("ActualProxies", result.proxies.size())
|
|
.detail("DesiredResolvers", req.configuration.getDesiredResolvers()).detail("ActualResolvers", result.resolvers.size());
|
|
|
|
if( !goodRecruitmentTime.isReady() &&
|
|
( RoleFitness(SERVER_KNOBS->EXPECTED_TLOG_FITNESS, req.configuration.getDesiredLogs(), ProcessClass::TLog).betterCount(RoleFitness(tlogs, ProcessClass::TLog)) ||
|
|
RoleFitness(SERVER_KNOBS->EXPECTED_PROXY_FITNESS, req.configuration.getDesiredProxies(), ProcessClass::Proxy).betterCount(bestFitness.proxy) ||
|
|
RoleFitness(SERVER_KNOBS->EXPECTED_RESOLVER_FITNESS, req.configuration.getDesiredResolvers(), ProcessClass::Resolver).betterCount(bestFitness.resolver) ) ) {
|
|
throw operation_failed();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
void checkRegions(const std::vector<RegionInfo>& regions) {
|
|
if(desiredDcIds.get().present() && desiredDcIds.get().get().size() == 2 && desiredDcIds.get().get()[0].get() == regions[0].dcId && desiredDcIds.get().get()[1].get() == regions[1].dcId) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
std::map< Optional<Standalone<StringRef>>, int> id_used;
|
|
getWorkerForRoleInDatacenter(regions[0].dcId, ProcessClass::ClusterController, ProcessClass::ExcludeFit, db.config, id_used, true);
|
|
getWorkerForRoleInDatacenter(regions[0].dcId, ProcessClass::Master, ProcessClass::ExcludeFit, db.config, id_used, true);
|
|
|
|
std::set<Optional<Key>> primaryDC;
|
|
primaryDC.insert(regions[0].dcId);
|
|
getWorkersForTlogs(db.config, db.config.tLogReplicationFactor, db.config.getDesiredLogs(), db.config.tLogPolicy, id_used, true, primaryDC);
|
|
if(regions[0].satelliteTLogReplicationFactor > 0 && db.config.usableRegions > 1) {
|
|
bool satelliteFallback = false;
|
|
getWorkersForSatelliteLogs(db.config, regions[0], regions[1], id_used, satelliteFallback, true);
|
|
}
|
|
|
|
getWorkerForRoleInDatacenter( regions[0].dcId, ProcessClass::Resolver, ProcessClass::ExcludeFit, db.config, id_used, true );
|
|
getWorkerForRoleInDatacenter( regions[0].dcId, ProcessClass::Proxy, ProcessClass::ExcludeFit, db.config, id_used, true );
|
|
|
|
vector<Optional<Key>> dcPriority;
|
|
dcPriority.push_back(regions[0].dcId);
|
|
dcPriority.push_back(regions[1].dcId);
|
|
desiredDcIds.set(dcPriority);
|
|
} catch( Error &e ) {
|
|
if(e.code() != error_code_no_more_servers) {
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
void checkRecoveryStalled() {
|
|
if( (db.serverInfo->get().recoveryState == RecoveryState::RECRUITING || db.serverInfo->get().recoveryState == RecoveryState::ACCEPTING_COMMITS || db.serverInfo->get().recoveryState == RecoveryState::ALL_LOGS_RECRUITED) && db.recoveryStalled ) {
|
|
if (db.config.regions.size() > 1) {
|
|
auto regions = db.config.regions;
|
|
if(clusterControllerDcId.get() == regions[0].dcId) {
|
|
std::swap(regions[0], regions[1]);
|
|
}
|
|
ASSERT(clusterControllerDcId.get() == regions[1].dcId);
|
|
checkRegions(regions);
|
|
}
|
|
}
|
|
}
|
|
|
|
//FIXME: determine when to fail the cluster controller when a primaryDC has not been set
|
|
bool betterMasterExists() {
|
|
const ServerDBInfo dbi = db.serverInfo->get();
|
|
|
|
if(dbi.recoveryState < RecoveryState::ACCEPTING_COMMITS) {
|
|
return false;
|
|
}
|
|
|
|
// Do not trigger better master exists if the cluster controller is excluded, since the master will change anyways once the cluster controller is moved
|
|
if(id_worker[clusterControllerProcessId].priorityInfo.isExcluded) {
|
|
return false;
|
|
}
|
|
|
|
if (db.config.regions.size() > 1 && db.config.regions[0].priority > db.config.regions[1].priority &&
|
|
db.config.regions[0].dcId != clusterControllerDcId.get() && versionDifferenceUpdated && datacenterVersionDifference < SERVER_KNOBS->MAX_VERSION_DIFFERENCE) {
|
|
checkRegions(db.config.regions);
|
|
}
|
|
|
|
// Get master process
|
|
auto masterWorker = id_worker.find(dbi.master.locality.processId());
|
|
if(masterWorker == id_worker.end()) {
|
|
return false;
|
|
}
|
|
|
|
// Get tlog processes
|
|
std::vector<WorkerDetails> tlogs;
|
|
std::vector<WorkerDetails> remote_tlogs;
|
|
std::vector<WorkerDetails> satellite_tlogs;
|
|
std::vector<WorkerDetails> log_routers;
|
|
std::set<NetworkAddress> logRouterAddresses;
|
|
std::vector<WorkerDetails> backup_workers;
|
|
std::set<NetworkAddress> backup_addresses;
|
|
|
|
for( auto& logSet : dbi.logSystemConfig.tLogs ) {
|
|
for( auto& it : logSet.tLogs ) {
|
|
auto tlogWorker = id_worker.find(it.interf().filteredLocality.processId());
|
|
if ( tlogWorker == id_worker.end() )
|
|
return false;
|
|
if ( tlogWorker->second.priorityInfo.isExcluded )
|
|
return true;
|
|
|
|
if(logSet.isLocal && logSet.locality == tagLocalitySatellite) {
|
|
satellite_tlogs.push_back(tlogWorker->second.details);
|
|
}
|
|
else if(logSet.isLocal) {
|
|
tlogs.push_back(tlogWorker->second.details);
|
|
} else {
|
|
remote_tlogs.push_back(tlogWorker->second.details);
|
|
}
|
|
}
|
|
|
|
for( auto& it : logSet.logRouters ) {
|
|
auto tlogWorker = id_worker.find(it.interf().filteredLocality.processId());
|
|
if ( tlogWorker == id_worker.end() )
|
|
return false;
|
|
if ( tlogWorker->second.priorityInfo.isExcluded )
|
|
return true;
|
|
if( !logRouterAddresses.count( tlogWorker->second.details.interf.address() ) ) {
|
|
logRouterAddresses.insert( tlogWorker->second.details.interf.address() );
|
|
log_routers.push_back(tlogWorker->second.details);
|
|
}
|
|
}
|
|
|
|
for (const auto& worker : logSet.backupWorkers) {
|
|
auto workerIt = id_worker.find(worker.interf().locality.processId());
|
|
if (workerIt == id_worker.end()) return false;
|
|
if (workerIt->second.priorityInfo.isExcluded) return true;
|
|
if (backup_addresses.count(workerIt->second.details.interf.address()) == 0) {
|
|
backup_addresses.insert(workerIt->second.details.interf.address());
|
|
backup_workers.push_back(workerIt->second.details);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Get proxy classes
|
|
std::vector<WorkerDetails> proxyClasses;
|
|
for(auto& it : dbi.client.proxies ) {
|
|
auto proxyWorker = id_worker.find(it.processId);
|
|
if ( proxyWorker == id_worker.end() )
|
|
return false;
|
|
if ( proxyWorker->second.priorityInfo.isExcluded )
|
|
return true;
|
|
proxyClasses.push_back(proxyWorker->second.details);
|
|
}
|
|
|
|
// Get resolver classes
|
|
std::vector<WorkerDetails> resolverClasses;
|
|
for(auto& it : dbi.resolvers ) {
|
|
auto resolverWorker = id_worker.find(it.locality.processId());
|
|
if ( resolverWorker == id_worker.end() )
|
|
return false;
|
|
if ( resolverWorker->second.priorityInfo.isExcluded )
|
|
return true;
|
|
resolverClasses.push_back(resolverWorker->second.details);
|
|
}
|
|
|
|
// Check master fitness. Don't return false if master is excluded in case all the processes are excluded, we still need master for recovery.
|
|
ProcessClass::Fitness oldMasterFit = masterWorker->second.details.processClass.machineClassFitness( ProcessClass::Master );
|
|
if(db.config.isExcludedServer(dbi.master.addresses())) {
|
|
oldMasterFit = std::max(oldMasterFit, ProcessClass::ExcludeFit);
|
|
}
|
|
|
|
std::map< Optional<Standalone<StringRef>>, int> id_used;
|
|
id_used[clusterControllerProcessId]++;
|
|
WorkerFitnessInfo mworker = getWorkerForRoleInDatacenter(clusterControllerDcId, ProcessClass::Master, ProcessClass::NeverAssign, db.config, id_used, true);
|
|
auto newMasterFit = mworker.worker.processClass.machineClassFitness( ProcessClass::Master );
|
|
if(db.config.isExcludedServer(mworker.worker.interf.addresses())) {
|
|
newMasterFit = std::max(newMasterFit, ProcessClass::ExcludeFit);
|
|
}
|
|
|
|
if ( oldMasterFit < newMasterFit )
|
|
return false;
|
|
if ( oldMasterFit > newMasterFit || ( dbi.master.locality.processId() == clusterControllerProcessId && mworker.worker.interf.locality.processId() != clusterControllerProcessId ) )
|
|
return true;
|
|
|
|
std::set<Optional<Key>> primaryDC;
|
|
std::set<Optional<Key>> remoteDC;
|
|
|
|
RegionInfo region;
|
|
RegionInfo remoteRegion;
|
|
if (db.config.regions.size()) {
|
|
primaryDC.insert(clusterControllerDcId);
|
|
for(auto& r : db.config.regions) {
|
|
if(r.dcId != clusterControllerDcId.get()) {
|
|
ASSERT(remoteDC.empty());
|
|
remoteDC.insert(r.dcId);
|
|
remoteRegion = r;
|
|
} else {
|
|
ASSERT(region.dcId == StringRef());
|
|
region = r;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check tLog fitness
|
|
RoleFitness oldTLogFit(tlogs, ProcessClass::TLog);
|
|
auto newTLogs = getWorkersForTlogs(db.config, db.config.tLogReplicationFactor, db.config.getDesiredLogs(), db.config.tLogPolicy, id_used, true, primaryDC);
|
|
RoleFitness newTLogFit(newTLogs, ProcessClass::TLog);
|
|
|
|
if(oldTLogFit < newTLogFit) return false;
|
|
|
|
bool oldSatelliteFallback = false;
|
|
|
|
for(auto& logSet : dbi.logSystemConfig.tLogs) {
|
|
if(logSet.isLocal && logSet.locality == tagLocalitySatellite) {
|
|
oldSatelliteFallback = logSet.tLogPolicy->info() != region.satelliteTLogPolicy->info();
|
|
ASSERT(!oldSatelliteFallback || logSet.tLogPolicy->info() == region.satelliteTLogPolicyFallback->info());
|
|
break;
|
|
}
|
|
}
|
|
|
|
RoleFitness oldSatelliteTLogFit(satellite_tlogs, ProcessClass::TLog);
|
|
bool newSatelliteFallback = false;
|
|
auto newSatelliteTLogs = (region.satelliteTLogReplicationFactor > 0 && db.config.usableRegions > 1) ? getWorkersForSatelliteLogs(db.config, region, remoteRegion, id_used, newSatelliteFallback, true) : satellite_tlogs;
|
|
RoleFitness newSatelliteTLogFit(newSatelliteTLogs, ProcessClass::TLog);
|
|
|
|
std::map<Optional<Key>,int32_t> satellite_priority;
|
|
for(auto& r : region.satellites) {
|
|
satellite_priority[r.dcId] = r.priority;
|
|
}
|
|
|
|
int32_t oldSatelliteRegionFit = std::numeric_limits<int32_t>::max();
|
|
for(auto& it : satellite_tlogs) {
|
|
if(satellite_priority.count(it.interf.locality.dcId())) {
|
|
oldSatelliteRegionFit = std::min(oldSatelliteRegionFit, satellite_priority[it.interf.locality.dcId()]);
|
|
} else {
|
|
oldSatelliteRegionFit = -1;
|
|
}
|
|
}
|
|
|
|
int32_t newSatelliteRegionFit = std::numeric_limits<int32_t>::max();
|
|
for(auto& it : newSatelliteTLogs) {
|
|
if(satellite_priority.count(it.interf.locality.dcId())) {
|
|
newSatelliteRegionFit = std::min(newSatelliteRegionFit, satellite_priority[it.interf.locality.dcId()]);
|
|
} else {
|
|
newSatelliteRegionFit = -1;
|
|
}
|
|
}
|
|
|
|
if(oldSatelliteFallback && !newSatelliteFallback)
|
|
return true;
|
|
if(!oldSatelliteFallback && newSatelliteFallback)
|
|
return false;
|
|
|
|
if(oldSatelliteRegionFit < newSatelliteRegionFit)
|
|
return true;
|
|
if(oldSatelliteRegionFit > newSatelliteRegionFit)
|
|
return false;
|
|
|
|
if(oldSatelliteTLogFit < newSatelliteTLogFit)
|
|
return false;
|
|
|
|
RoleFitness oldRemoteTLogFit(remote_tlogs, ProcessClass::TLog);
|
|
std::vector<UID> exclusionWorkerIds;
|
|
auto fn = [](const WorkerDetails &in) { return in.interf.id(); };
|
|
std::transform(newTLogs.begin(), newTLogs.end(), std::back_inserter(exclusionWorkerIds), fn);
|
|
std::transform(newSatelliteTLogs.begin(), newSatelliteTLogs.end(), std::back_inserter(exclusionWorkerIds), fn);
|
|
RoleFitness newRemoteTLogFit(
|
|
(db.config.usableRegions > 1 && (dbi.recoveryState == RecoveryState::ALL_LOGS_RECRUITED || dbi.recoveryState == RecoveryState::FULLY_RECOVERED)) ?
|
|
getWorkersForTlogs(db.config, db.config.getRemoteTLogReplicationFactor(), db.config.getDesiredRemoteLogs(), db.config.getRemoteTLogPolicy(), id_used, true, remoteDC, exclusionWorkerIds)
|
|
: remote_tlogs, ProcessClass::TLog);
|
|
if(oldRemoteTLogFit < newRemoteTLogFit) return false;
|
|
int oldRouterCount = oldTLogFit.count * std::max<int>(1, db.config.desiredLogRouterCount / std::max(1,oldTLogFit.count));
|
|
int newRouterCount = newTLogFit.count * std::max<int>(1, db.config.desiredLogRouterCount / std::max(1,newTLogFit.count));
|
|
RoleFitness oldLogRoutersFit(log_routers, ProcessClass::LogRouter);
|
|
RoleFitness newLogRoutersFit((db.config.usableRegions > 1 && dbi.recoveryState == RecoveryState::FULLY_RECOVERED) ? getWorkersForRoleInDatacenter( *remoteDC.begin(), ProcessClass::LogRouter, newRouterCount, db.config, id_used, Optional<WorkerFitnessInfo>(), true ) : log_routers, ProcessClass::LogRouter);
|
|
|
|
if(oldLogRoutersFit.count < oldRouterCount) {
|
|
oldLogRoutersFit.worstFit = ProcessClass::NeverAssign;
|
|
}
|
|
if(newLogRoutersFit.count < newRouterCount) {
|
|
newLogRoutersFit.worstFit = ProcessClass::NeverAssign;
|
|
}
|
|
if(oldLogRoutersFit < newLogRoutersFit) return false;
|
|
// Check proxy/resolver fitness
|
|
RoleFitnessPair oldInFit(RoleFitness(proxyClasses, ProcessClass::Proxy), RoleFitness(resolverClasses, ProcessClass::Resolver));
|
|
|
|
auto first_resolver = getWorkerForRoleInDatacenter( clusterControllerDcId, ProcessClass::Resolver, ProcessClass::ExcludeFit, db.config, id_used, true );
|
|
auto first_proxy = getWorkerForRoleInDatacenter( clusterControllerDcId, ProcessClass::Proxy, ProcessClass::ExcludeFit, db.config, id_used, true );
|
|
|
|
auto proxies = getWorkersForRoleInDatacenter( clusterControllerDcId, ProcessClass::Proxy, db.config.getDesiredProxies(), db.config, id_used, first_proxy, true );
|
|
auto resolvers = getWorkersForRoleInDatacenter( clusterControllerDcId, ProcessClass::Resolver, db.config.getDesiredResolvers(), db.config, id_used, first_resolver, true );
|
|
|
|
RoleFitnessPair newInFit(RoleFitness(proxies, ProcessClass::Proxy), RoleFitness(resolvers, ProcessClass::Resolver));
|
|
if(oldInFit.proxy.betterFitness(newInFit.proxy) || oldInFit.resolver.betterFitness(newInFit.resolver)) {
|
|
return false;
|
|
}
|
|
|
|
// Check backup worker fitness
|
|
RoleFitness oldBackupWorkersFit(backup_workers, ProcessClass::Backup);
|
|
const int nBackup = backup_addresses.size();
|
|
RoleFitness newBackupWorkersFit(
|
|
getWorkersForRoleInDatacenter(clusterControllerDcId, ProcessClass::Backup, nBackup, db.config, id_used),
|
|
ProcessClass::Backup);
|
|
|
|
if (oldTLogFit > newTLogFit || oldInFit > newInFit || oldSatelliteTLogFit > newSatelliteTLogFit ||
|
|
oldRemoteTLogFit > newRemoteTLogFit || oldLogRoutersFit > newLogRoutersFit ||
|
|
oldBackupWorkersFit > newBackupWorkersFit) {
|
|
TraceEvent("BetterMasterExists", id)
|
|
.detail("OldMasterFit", oldMasterFit)
|
|
.detail("NewMasterFit", newMasterFit)
|
|
.detail("OldTLogFit", oldTLogFit.toString())
|
|
.detail("NewTLogFit", newTLogFit.toString())
|
|
.detail("OldProxyFit", oldInFit.proxy.toString())
|
|
.detail("NewProxyFit", newInFit.proxy.toString())
|
|
.detail("OldResolverFit", oldInFit.resolver.toString())
|
|
.detail("NewResolverFit", newInFit.resolver.toString())
|
|
.detail("OldSatelliteFit", oldSatelliteTLogFit.toString())
|
|
.detail("NewSatelliteFit", newSatelliteTLogFit.toString())
|
|
.detail("OldRemoteFit", oldRemoteTLogFit.toString())
|
|
.detail("NewRemoteFit", newRemoteTLogFit.toString())
|
|
.detail("OldRouterFit", oldLogRoutersFit.toString())
|
|
.detail("NewRouterFit", newLogRoutersFit.toString())
|
|
.detail("OldBackupWorkerFit", oldBackupWorkersFit.toString())
|
|
.detail("NewBackupWorkerFit", newBackupWorkersFit.toString())
|
|
.detail("OldSatelliteFallback", oldSatelliteFallback)
|
|
.detail("NewSatelliteFallback", newSatelliteFallback);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool isUsedNotMaster(Optional<Key> processId) {
|
|
ASSERT(masterProcessId.present());
|
|
if (processId == masterProcessId) return false;
|
|
|
|
auto& dbInfo = db.serverInfo->get();
|
|
for (const auto& tlogset : dbInfo.logSystemConfig.tLogs) {
|
|
for (const auto& tlog: tlogset.tLogs) {
|
|
if (tlog.present() && tlog.interf().filteredLocality.processId() == processId) return true;
|
|
}
|
|
}
|
|
for (const MasterProxyInterface& interf : dbInfo.client.proxies) {
|
|
if (interf.processId == processId) return true;
|
|
}
|
|
for (const ResolverInterface& interf: dbInfo.resolvers) {
|
|
if (interf.locality.processId() == processId) return true;
|
|
}
|
|
if (processId == clusterControllerProcessId) return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool onMasterIsBetter(const WorkerDetails& worker, ProcessClass::ClusterRole role) {
|
|
ASSERT(masterProcessId.present());
|
|
const auto& pid = worker.interf.locality.processId();
|
|
if ((role != ProcessClass::DataDistributor && role != ProcessClass::Ratekeeper) || pid == masterProcessId.get()) {
|
|
return false;
|
|
}
|
|
return isUsedNotMaster(pid);
|
|
}
|
|
|
|
std::map< Optional<Standalone<StringRef>>, int> getUsedIds() {
|
|
std::map<Optional<Standalone<StringRef>>, int> idUsed;
|
|
updateKnownIds(&idUsed);
|
|
|
|
auto& dbInfo = db.serverInfo->get();
|
|
for (const auto& tlogset : dbInfo.logSystemConfig.tLogs) {
|
|
for (const auto& tlog: tlogset.tLogs) {
|
|
if (tlog.present()) {
|
|
idUsed[tlog.interf().filteredLocality.processId()]++;
|
|
}
|
|
}
|
|
}
|
|
for (const MasterProxyInterface& interf : dbInfo.client.proxies) {
|
|
ASSERT(interf.processId.present());
|
|
idUsed[interf.processId]++;
|
|
}
|
|
for (const ResolverInterface& interf: dbInfo.resolvers) {
|
|
ASSERT(interf.locality.processId().present());
|
|
idUsed[interf.locality.processId()]++;
|
|
}
|
|
return idUsed;
|
|
}
|
|
|
|
std::map< Optional<Standalone<StringRef>>, WorkerInfo > id_worker;
|
|
std::map< Optional<Standalone<StringRef>>, ProcessClass > id_class; //contains the mapping from process id to process class from the database
|
|
Standalone<RangeResultRef> lastProcessClasses;
|
|
bool gotProcessClasses;
|
|
bool gotFullyRecoveredConfig;
|
|
Optional<Standalone<StringRef>> masterProcessId;
|
|
Optional<Standalone<StringRef>> clusterControllerProcessId;
|
|
Optional<Standalone<StringRef>> clusterControllerDcId;
|
|
AsyncVar<Optional<vector<Optional<Key>>>> desiredDcIds; //desired DC priorities
|
|
AsyncVar<std::pair<bool,Optional<vector<Optional<Key>>>>> changingDcIds; //current DC priorities to change first, and whether that is the cluster controller
|
|
AsyncVar<std::pair<bool,Optional<vector<Optional<Key>>>>> changedDcIds; //current DC priorities to change second, and whether the cluster controller has been changed
|
|
UID id;
|
|
std::vector<RecruitFromConfigurationRequest> outstandingRecruitmentRequests;
|
|
std::vector<RecruitRemoteFromConfigurationRequest> outstandingRemoteRecruitmentRequests;
|
|
std::vector<std::pair<RecruitStorageRequest, double>> outstandingStorageRequests;
|
|
ActorCollection ac;
|
|
UpdateWorkerList updateWorkerList;
|
|
Future<Void> outstandingRequestChecker;
|
|
Future<Void> outstandingRemoteRequestChecker;
|
|
AsyncTrigger updateDBInfo;
|
|
std::set<Endpoint> updateDBInfoEndpoints;
|
|
std::set<Endpoint> removedDBInfoEndpoints;
|
|
|
|
DBInfo db;
|
|
Database cx;
|
|
double startTime;
|
|
Future<Void> goodRecruitmentTime;
|
|
Future<Void> goodRemoteRecruitmentTime;
|
|
Version datacenterVersionDifference;
|
|
PromiseStream<Future<Void>> addActor;
|
|
bool versionDifferenceUpdated;
|
|
bool recruitingDistributor;
|
|
Optional<UID> recruitingRatekeeperID;
|
|
AsyncVar<bool> recruitRatekeeper;
|
|
|
|
CounterCollection clusterControllerMetrics;
|
|
|
|
Counter openDatabaseRequests;
|
|
Counter registerWorkerRequests;
|
|
Counter getWorkersRequests;
|
|
Counter getClientWorkersRequests;
|
|
Counter registerMasterRequests;
|
|
Counter statusRequests;
|
|
|
|
ClusterControllerData( ClusterControllerFullInterface const& ccInterface, LocalityData const& locality )
|
|
: clusterControllerProcessId(locality.processId()), clusterControllerDcId(locality.dcId()),
|
|
id(ccInterface.id()), ac(false), outstandingRequestChecker(Void()), outstandingRemoteRequestChecker(Void()), gotProcessClasses(false),
|
|
gotFullyRecoveredConfig(false), startTime(now()), goodRecruitmentTime(Never()),
|
|
goodRemoteRecruitmentTime(Never()), datacenterVersionDifference(0),
|
|
versionDifferenceUpdated(false), recruitingDistributor(false), recruitRatekeeper(false),
|
|
clusterControllerMetrics("ClusterController", id.toString()),
|
|
openDatabaseRequests("OpenDatabaseRequests", clusterControllerMetrics),
|
|
registerWorkerRequests("RegisterWorkerRequests", clusterControllerMetrics),
|
|
getWorkersRequests("GetWorkersRequests", clusterControllerMetrics),
|
|
getClientWorkersRequests("GetClientWorkersRequests", clusterControllerMetrics),
|
|
registerMasterRequests("RegisterMasterRequests", clusterControllerMetrics),
|
|
statusRequests("StatusRequests", clusterControllerMetrics)
|
|
{
|
|
auto serverInfo = ServerDBInfo();
|
|
serverInfo.id = deterministicRandom()->randomUniqueID();
|
|
serverInfo.infoGeneration = ++db.dbInfoCount;
|
|
serverInfo.masterLifetime.ccID = id;
|
|
serverInfo.clusterInterface = ccInterface;
|
|
serverInfo.myLocality = locality;
|
|
db.serverInfo->set( serverInfo );
|
|
cx = openDBOnServer(db.serverInfo, TaskPriority::DefaultEndpoint, true, true);
|
|
}
|
|
|
|
~ClusterControllerData() {
|
|
ac.clear(false);
|
|
id_worker.clear();
|
|
}
|
|
};
|
|
|
|
ACTOR Future<Void> clusterWatchDatabase( ClusterControllerData* cluster, ClusterControllerData::DBInfo* db )
|
|
{
|
|
state MasterInterface iMaster;
|
|
|
|
// SOMEDAY: If there is already a non-failed master referenced by zkMasterInfo, use that one until it fails
|
|
// When this someday is implemented, make sure forced failures still cause the master to be recruited again
|
|
|
|
loop {
|
|
TraceEvent("CCWDB", cluster->id);
|
|
try {
|
|
state double recoveryStart = now();
|
|
TraceEvent("CCWDB", cluster->id).detail("Recruiting", "Master");
|
|
|
|
//We must recruit the master in the same data center as the cluster controller.
|
|
//This should always be possible, because we can recruit the master on the same process as the cluster controller.
|
|
std::map< Optional<Standalone<StringRef>>, int> id_used;
|
|
id_used[cluster->clusterControllerProcessId]++;
|
|
state WorkerFitnessInfo masterWorker = cluster->getWorkerForRoleInDatacenter(cluster->clusterControllerDcId, ProcessClass::Master, ProcessClass::NeverAssign, db->config, id_used);
|
|
if( ( masterWorker.worker.processClass.machineClassFitness( ProcessClass::Master ) > SERVER_KNOBS->EXPECTED_MASTER_FITNESS || masterWorker.worker.interf.locality.processId() == cluster->clusterControllerProcessId )
|
|
&& !cluster->goodRecruitmentTime.isReady() ) {
|
|
TraceEvent("CCWDB", cluster->id).detail("Fitness", masterWorker.worker.processClass.machineClassFitness( ProcessClass::Master ));
|
|
wait( delay(SERVER_KNOBS->ATTEMPT_RECRUITMENT_DELAY) );
|
|
continue;
|
|
}
|
|
RecruitMasterRequest rmq;
|
|
rmq.lifetime = db->serverInfo->get().masterLifetime;
|
|
rmq.forceRecovery = db->forceRecovery;
|
|
|
|
cluster->masterProcessId = masterWorker.worker.interf.locality.processId();
|
|
cluster->db.unfinishedRecoveries++;
|
|
state Future<ErrorOr<MasterInterface>> fNewMaster = masterWorker.worker.interf.master.tryGetReply( rmq );
|
|
wait( ready(fNewMaster) || db->forceMasterFailure.onTrigger() );
|
|
if (fNewMaster.isReady() && fNewMaster.get().present()) {
|
|
TraceEvent("CCWDB", cluster->id).detail("Recruited", fNewMaster.get().get().id());
|
|
|
|
// for status tool
|
|
TraceEvent("RecruitedMasterWorker", cluster->id)
|
|
.detail("Address", fNewMaster.get().get().address())
|
|
.trackLatest("RecruitedMasterWorker");
|
|
|
|
iMaster = fNewMaster.get().get();
|
|
|
|
db->masterRegistrationCount = 0;
|
|
db->recoveryStalled = false;
|
|
|
|
auto dbInfo = ServerDBInfo();
|
|
dbInfo.master = iMaster;
|
|
dbInfo.id = deterministicRandom()->randomUniqueID();
|
|
dbInfo.infoGeneration = ++db->dbInfoCount;
|
|
dbInfo.masterLifetime = db->serverInfo->get().masterLifetime;
|
|
++dbInfo.masterLifetime;
|
|
dbInfo.clusterInterface = db->serverInfo->get().clusterInterface;
|
|
dbInfo.distributor = db->serverInfo->get().distributor;
|
|
dbInfo.ratekeeper = db->serverInfo->get().ratekeeper;
|
|
dbInfo.latencyBandConfig = db->serverInfo->get().latencyBandConfig;
|
|
|
|
TraceEvent("CCWDB", cluster->id).detail("Lifetime", dbInfo.masterLifetime.toString()).detail("ChangeID", dbInfo.id);
|
|
db->serverInfo->set( dbInfo );
|
|
|
|
state Future<Void> spinDelay = delay(SERVER_KNOBS->MASTER_SPIN_DELAY); // Don't retry master recovery more than once per second, but don't delay the "first" recovery after more than a second of normal operation
|
|
|
|
TraceEvent("CCWDB", cluster->id).detail("Watching", iMaster.id());
|
|
|
|
// Master failure detection is pretty sensitive, but if we are in the middle of a very long recovery we really don't want to have to start over
|
|
loop choose {
|
|
when (wait( waitFailureClient( iMaster.waitFailure, db->masterRegistrationCount ?
|
|
SERVER_KNOBS->MASTER_FAILURE_REACTION_TIME : (now() - recoveryStart) * SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY,
|
|
db->masterRegistrationCount ? -SERVER_KNOBS->MASTER_FAILURE_REACTION_TIME/SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY : SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY ) || db->forceMasterFailure.onTrigger() )) { break; }
|
|
when (wait( db->serverInfo->onChange() )) {}
|
|
}
|
|
wait(spinDelay);
|
|
|
|
TEST(true); // clusterWatchDatabase() master failed
|
|
TraceEvent(SevWarn,"DetectedFailedMaster", cluster->id).detail("OldMaster", iMaster.id());
|
|
} else {
|
|
TEST(true); //clusterWatchDatabas() !newMaster.present()
|
|
wait( delay(SERVER_KNOBS->MASTER_SPIN_DELAY) );
|
|
}
|
|
} catch (Error& e) {
|
|
TraceEvent("CCWDB", cluster->id).error(e, true).detail("Master", iMaster.id());
|
|
if (e.code() == error_code_actor_cancelled) throw;
|
|
|
|
bool ok = e.code() == error_code_no_more_servers;
|
|
TraceEvent(ok ? SevWarn : SevError,"ClusterWatchDatabaseRetrying", cluster->id).error(e);
|
|
if (!ok)
|
|
throw e;
|
|
wait( delay(SERVER_KNOBS->ATTEMPT_RECRUITMENT_DELAY) );
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> clusterGetServerInfo(ClusterControllerData::DBInfo* db, UID knownServerInfoID,
|
|
ReplyPromise<ServerDBInfo> reply) {
|
|
while(db->serverInfo->get().id == knownServerInfoID) {
|
|
choose {
|
|
when (wait( yieldedFuture(db->serverInfo->onChange()) )) {}
|
|
when (wait( delayJittered( 300 ) )) { break; } // The server might be long gone!
|
|
}
|
|
}
|
|
reply.send( db->serverInfo->get() );
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> clusterOpenDatabase(ClusterControllerData::DBInfo* db, OpenDatabaseRequest req) {
|
|
db->clientStatus[req.reply.getEndpoint().getPrimaryAddress()] = std::make_pair(now(), req);
|
|
if(db->clientStatus.size() > 10000) {
|
|
TraceEvent(SevWarnAlways, "TooManyClientStatusEntries").suppressFor(1.0);
|
|
}
|
|
|
|
while (db->clientInfo->get().id == req.knownClientInfoID) {
|
|
choose {
|
|
when (wait( db->clientInfo->onChange() )) {}
|
|
when (wait( delayJittered( SERVER_KNOBS->COORDINATOR_REGISTER_INTERVAL ) )) { break; } // The client might be long gone!
|
|
}
|
|
}
|
|
|
|
req.reply.send( db->clientInfo->get() );
|
|
return Void();
|
|
}
|
|
|
|
void checkOutstandingRecruitmentRequests( ClusterControllerData* self ) {
|
|
for( int i = 0; i < self->outstandingRecruitmentRequests.size(); i++ ) {
|
|
RecruitFromConfigurationRequest& req = self->outstandingRecruitmentRequests[i];
|
|
try {
|
|
RecruitFromConfigurationReply rep = self->findWorkersForConfiguration( req );
|
|
req.reply.send( rep );
|
|
swapAndPop( &self->outstandingRecruitmentRequests, i-- );
|
|
} catch (Error& e) {
|
|
if (e.code() == error_code_no_more_servers || e.code() == error_code_operation_failed) {
|
|
TraceEvent(SevWarn, "RecruitTLogMatchingSetNotAvailable", self->id).error(e);
|
|
} else {
|
|
TraceEvent(SevError, "RecruitTLogsRequestError", self->id).error(e);
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void checkOutstandingRemoteRecruitmentRequests( ClusterControllerData* self ) {
|
|
for( int i = 0; i < self->outstandingRemoteRecruitmentRequests.size(); i++ ) {
|
|
RecruitRemoteFromConfigurationRequest& req = self->outstandingRemoteRecruitmentRequests[i];
|
|
try {
|
|
RecruitRemoteFromConfigurationReply rep = self->findRemoteWorkersForConfiguration( req );
|
|
req.reply.send( rep );
|
|
swapAndPop( &self->outstandingRemoteRecruitmentRequests, i-- );
|
|
} catch (Error& e) {
|
|
if (e.code() == error_code_no_more_servers || e.code() == error_code_operation_failed) {
|
|
TraceEvent(SevWarn, "RecruitRemoteTLogMatchingSetNotAvailable", self->id).error(e);
|
|
} else {
|
|
TraceEvent(SevError, "RecruitRemoteTLogsRequestError", self->id).error(e);
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void checkOutstandingStorageRequests( ClusterControllerData* self ) {
|
|
for( int i = 0; i < self->outstandingStorageRequests.size(); i++ ) {
|
|
auto& req = self->outstandingStorageRequests[i];
|
|
try {
|
|
if(req.second < now()) {
|
|
req.first.reply.sendError(timed_out());
|
|
swapAndPop( &self->outstandingStorageRequests, i-- );
|
|
} else {
|
|
if(!self->gotProcessClasses && !req.first.criticalRecruitment)
|
|
throw no_more_servers();
|
|
|
|
auto worker = self->getStorageWorker(req.first);
|
|
RecruitStorageReply rep;
|
|
rep.worker = worker.interf;
|
|
rep.processClass = worker.processClass;
|
|
req.first.reply.send( rep );
|
|
swapAndPop( &self->outstandingStorageRequests, i-- );
|
|
}
|
|
} catch (Error& e) {
|
|
if (e.code() == error_code_no_more_servers) {
|
|
TraceEvent(SevWarn, "RecruitStorageNotAvailable", self->id)
|
|
.suppressFor(1.0)
|
|
.detail("OutstandingReq", i)
|
|
.detail("IsCriticalRecruitment", req.first.criticalRecruitment)
|
|
.error(e);
|
|
} else {
|
|
TraceEvent(SevError, "RecruitStorageError", self->id).error(e);
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void checkBetterDDOrRK(ClusterControllerData* self) {
|
|
if (!self->masterProcessId.present() || self->db.serverInfo->get().recoveryState < RecoveryState::ACCEPTING_COMMITS) {
|
|
return;
|
|
}
|
|
|
|
std::map<Optional<Standalone<StringRef>>, int> id_used = self->getUsedIds();
|
|
WorkerDetails newRKWorker = self->getWorkerForRoleInDatacenter(self->clusterControllerDcId, ProcessClass::Ratekeeper, ProcessClass::NeverAssign, self->db.config, id_used, true).worker;
|
|
if (self->onMasterIsBetter(newRKWorker, ProcessClass::Ratekeeper)) {
|
|
newRKWorker = self->id_worker[self->masterProcessId.get()].details;
|
|
}
|
|
id_used = self->getUsedIds();
|
|
for(auto& it : id_used) {
|
|
it.second *= 2;
|
|
}
|
|
id_used[newRKWorker.interf.locality.processId()]++;
|
|
WorkerDetails newDDWorker = self->getWorkerForRoleInDatacenter(self->clusterControllerDcId, ProcessClass::DataDistributor, ProcessClass::NeverAssign, self->db.config, id_used, true).worker;
|
|
if (self->onMasterIsBetter(newDDWorker, ProcessClass::DataDistributor)) {
|
|
newDDWorker = self->id_worker[self->masterProcessId.get()].details;
|
|
}
|
|
auto bestFitnessForRK = newRKWorker.processClass.machineClassFitness(ProcessClass::Ratekeeper);
|
|
if(self->db.config.isExcludedServer(newRKWorker.interf.addresses())) {
|
|
bestFitnessForRK = std::max(bestFitnessForRK, ProcessClass::ExcludeFit);
|
|
}
|
|
auto bestFitnessForDD = newDDWorker.processClass.machineClassFitness(ProcessClass::DataDistributor);
|
|
if(self->db.config.isExcludedServer(newDDWorker.interf.addresses())) {
|
|
bestFitnessForDD = std::max(bestFitnessForDD, ProcessClass::ExcludeFit);
|
|
}
|
|
//TraceEvent("CheckBetterDDorRKNewRecruits", self->id).detail("MasterProcessId", self->masterProcessId)
|
|
//.detail("NewRecruitRKProcessId", newRKWorker.interf.locality.processId()).detail("NewRecruiteDDProcessId", newDDWorker.interf.locality.processId());
|
|
|
|
Optional<Standalone<StringRef>> currentRKProcessId;
|
|
Optional<Standalone<StringRef>> currentDDProcessId;
|
|
|
|
auto& db = self->db.serverInfo->get();
|
|
bool ratekeeperHealthy = false;
|
|
if (db.ratekeeper.present() && self->id_worker.count(db.ratekeeper.get().locality.processId()) &&
|
|
(!self->recruitingRatekeeperID.present() || (self->recruitingRatekeeperID.get() == db.ratekeeper.get().id()))) {
|
|
auto& rkWorker = self->id_worker[db.ratekeeper.get().locality.processId()];
|
|
currentRKProcessId = rkWorker.details.interf.locality.processId();
|
|
auto rkFitness = rkWorker.details.processClass.machineClassFitness(ProcessClass::Ratekeeper);
|
|
if(rkWorker.priorityInfo.isExcluded) {
|
|
rkFitness = ProcessClass::ExcludeFit;
|
|
}
|
|
if (self->isUsedNotMaster(rkWorker.details.interf.locality.processId()) || bestFitnessForRK < rkFitness
|
|
|| (rkFitness == bestFitnessForRK && rkWorker.details.interf.locality.processId() == self->masterProcessId && newRKWorker.interf.locality.processId() != self->masterProcessId)) {
|
|
TraceEvent("CCHaltRK", self->id).detail("RKID", db.ratekeeper.get().id())
|
|
.detail("Excluded", rkWorker.priorityInfo.isExcluded)
|
|
.detail("Fitness", rkFitness).detail("BestFitness", bestFitnessForRK);
|
|
self->recruitRatekeeper.set(true);
|
|
} else {
|
|
ratekeeperHealthy = true;
|
|
}
|
|
}
|
|
|
|
if (!self->recruitingDistributor && db.distributor.present() && self->id_worker.count(db.distributor.get().locality.processId())) {
|
|
auto& ddWorker = self->id_worker[db.distributor.get().locality.processId()];
|
|
auto ddFitness = ddWorker.details.processClass.machineClassFitness(ProcessClass::DataDistributor);
|
|
currentDDProcessId = ddWorker.details.interf.locality.processId();
|
|
if(ddWorker.priorityInfo.isExcluded) {
|
|
ddFitness = ProcessClass::ExcludeFit;
|
|
}
|
|
if (self->isUsedNotMaster(ddWorker.details.interf.locality.processId()) || bestFitnessForDD < ddFitness
|
|
|| (ddFitness == bestFitnessForDD && ddWorker.details.interf.locality.processId() == self->masterProcessId && newDDWorker.interf.locality.processId() != self->masterProcessId)
|
|
|| (ddFitness == bestFitnessForDD && newRKWorker.interf.locality.processId() != newDDWorker.interf.locality.processId() && ratekeeperHealthy && currentRKProcessId.present() && currentDDProcessId == currentRKProcessId
|
|
&& (newRKWorker.interf.locality.processId() != self->masterProcessId && newDDWorker.interf.locality.processId() != self->masterProcessId) )) {
|
|
TraceEvent("CCHaltDD", self->id).detail("DDID", db.distributor.get().id())
|
|
.detail("Excluded", ddWorker.priorityInfo.isExcluded)
|
|
.detail("Fitness", ddFitness).detail("BestFitness", bestFitnessForDD)
|
|
.detail("CurrentRateKeeperProcessId", currentRKProcessId.present() ? currentRKProcessId.get() : LiteralStringRef("None"))
|
|
.detail("CurrentDDProcessId", currentDDProcessId)
|
|
.detail("MasterProcessID", self->masterProcessId)
|
|
.detail("NewRKWorkers", newRKWorker.interf.locality.processId())
|
|
.detail("NewDDWorker", newDDWorker.interf.locality.processId());
|
|
ddWorker.haltDistributor = brokenPromiseToNever(db.distributor.get().haltDataDistributor.getReply(HaltDataDistributorRequest(self->id)));
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> doCheckOutstandingRequests( ClusterControllerData* self ) {
|
|
try {
|
|
wait( delay(SERVER_KNOBS->CHECK_OUTSTANDING_INTERVAL) );
|
|
while( !self->goodRecruitmentTime.isReady() ) {
|
|
wait(self->goodRecruitmentTime);
|
|
}
|
|
|
|
checkOutstandingRecruitmentRequests( self );
|
|
checkOutstandingStorageRequests( self );
|
|
checkBetterDDOrRK(self);
|
|
|
|
self->checkRecoveryStalled();
|
|
if (self->betterMasterExists()) {
|
|
self->db.forceMasterFailure.trigger();
|
|
TraceEvent("MasterRegistrationKill", self->id).detail("MasterId", self->db.serverInfo->get().master.id());
|
|
}
|
|
} catch( Error &e ) {
|
|
if(e.code() != error_code_no_more_servers) {
|
|
TraceEvent(SevError, "CheckOutstandingError").error(e);
|
|
}
|
|
}
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> doCheckOutstandingRemoteRequests( ClusterControllerData* self ) {
|
|
try {
|
|
wait( delay(SERVER_KNOBS->CHECK_OUTSTANDING_INTERVAL) );
|
|
while( !self->goodRemoteRecruitmentTime.isReady() ) {
|
|
wait(self->goodRemoteRecruitmentTime);
|
|
}
|
|
|
|
checkOutstandingRemoteRecruitmentRequests( self );
|
|
} catch( Error &e ) {
|
|
if(e.code() != error_code_no_more_servers) {
|
|
TraceEvent(SevError, "CheckOutstandingError").error(e);
|
|
}
|
|
}
|
|
return Void();
|
|
}
|
|
|
|
void checkOutstandingRequests( ClusterControllerData* self ) {
|
|
if( self->outstandingRemoteRequestChecker.isReady() ) {
|
|
self->outstandingRemoteRequestChecker = doCheckOutstandingRemoteRequests(self);
|
|
}
|
|
|
|
if( self->outstandingRequestChecker.isReady() ) {
|
|
self->outstandingRequestChecker = doCheckOutstandingRequests(self);
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> rebootAndCheck( ClusterControllerData* cluster, Optional<Standalone<StringRef>> processID ) {
|
|
{
|
|
auto watcher = cluster->id_worker.find(processID);
|
|
ASSERT(watcher != cluster->id_worker.end());
|
|
|
|
watcher->second.reboots++;
|
|
wait( delay( g_network->isSimulated() ? SERVER_KNOBS->SIM_SHUTDOWN_TIMEOUT : SERVER_KNOBS->SHUTDOWN_TIMEOUT ) );
|
|
}
|
|
|
|
{
|
|
auto watcher = cluster->id_worker.find(processID);
|
|
if(watcher != cluster->id_worker.end()) {
|
|
watcher->second.reboots--;
|
|
if( watcher->second.reboots < 2 )
|
|
checkOutstandingRequests( cluster );
|
|
}
|
|
}
|
|
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> workerAvailabilityWatch( WorkerInterface worker, ProcessClass startingClass, ClusterControllerData* cluster) {
|
|
state Future<Void> failed =
|
|
(worker.address() == g_network->getLocalAddress() || startingClass.classType() == ProcessClass::TesterClass)
|
|
? Never()
|
|
: waitFailureClient(worker.waitFailure, SERVER_KNOBS->WORKER_FAILURE_TIME);
|
|
cluster->updateWorkerList.set( worker.locality.processId(), ProcessData(worker.locality, startingClass, worker.stableAddress()) );
|
|
cluster->updateDBInfoEndpoints.insert(worker.updateServerDBInfo.getEndpoint());
|
|
cluster->updateDBInfo.trigger();
|
|
// This switching avoids a race where the worker can be added to id_worker map after the workerAvailabilityWatch fails for the worker.
|
|
wait(delay(0));
|
|
|
|
loop {
|
|
choose {
|
|
when( wait( IFailureMonitor::failureMonitor().onStateEqual( worker.storage.getEndpoint(), FailureStatus(IFailureMonitor::failureMonitor().getState( worker.storage.getEndpoint() ).isAvailable()) ) ) ) {
|
|
if( IFailureMonitor::failureMonitor().getState( worker.storage.getEndpoint() ).isAvailable() ) {
|
|
cluster->ac.add( rebootAndCheck( cluster, worker.locality.processId() ) );
|
|
checkOutstandingRequests( cluster );
|
|
}
|
|
}
|
|
when( wait( failed ) ) { // remove workers that have failed
|
|
WorkerInfo& failedWorkerInfo = cluster->id_worker[ worker.locality.processId() ];
|
|
|
|
if (!failedWorkerInfo.reply.isSet()) {
|
|
failedWorkerInfo.reply.send( RegisterWorkerReply(failedWorkerInfo.details.processClass, failedWorkerInfo.priorityInfo) );
|
|
}
|
|
if (worker.locality.processId() == cluster->masterProcessId) {
|
|
cluster->masterProcessId = Optional<Key>();
|
|
}
|
|
cluster->removedDBInfoEndpoints.insert(worker.updateServerDBInfo.getEndpoint());
|
|
cluster->id_worker.erase( worker.locality.processId() );
|
|
cluster->updateWorkerList.set( worker.locality.processId(), Optional<ProcessData>() );
|
|
return Void();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
struct FailureStatusInfo {
|
|
FailureStatus status;
|
|
double lastRequestTime;
|
|
double penultimateRequestTime;
|
|
|
|
FailureStatusInfo() : lastRequestTime(0), penultimateRequestTime(0) {}
|
|
|
|
void insertRequest(double now) {
|
|
penultimateRequestTime = lastRequestTime;
|
|
lastRequestTime = now;
|
|
}
|
|
|
|
double latency(double now) const {
|
|
return std::max( now - lastRequestTime, lastRequestTime - penultimateRequestTime );
|
|
}
|
|
};
|
|
|
|
ACTOR Future<vector<TLogInterface>> requireAll( vector<Future<Optional<vector<TLogInterface>>>> in ) {
|
|
state vector<TLogInterface> out;
|
|
state int i;
|
|
for(i=0; i<in.size(); i++) {
|
|
Optional<vector<TLogInterface>> x = wait(in[i]);
|
|
if (!x.present()) throw recruitment_failed();
|
|
out.insert(out.end(), x.get().begin(), x.get().end());
|
|
}
|
|
return out;
|
|
}
|
|
|
|
void clusterRecruitStorage( ClusterControllerData* self, RecruitStorageRequest req ) {
|
|
try {
|
|
if(!self->gotProcessClasses && !req.criticalRecruitment)
|
|
throw no_more_servers();
|
|
auto worker = self->getStorageWorker(req);
|
|
RecruitStorageReply rep;
|
|
rep.worker = worker.interf;
|
|
rep.processClass = worker.processClass;
|
|
req.reply.send( rep );
|
|
} catch ( Error& e ) {
|
|
if (e.code() == error_code_no_more_servers) {
|
|
self->outstandingStorageRequests.push_back( std::make_pair(req, now() + SERVER_KNOBS->RECRUITMENT_TIMEOUT) );
|
|
TraceEvent(SevWarn, "RecruitStorageNotAvailable", self->id)
|
|
.detail("IsCriticalRecruitment", req.criticalRecruitment)
|
|
.error(e);
|
|
} else {
|
|
TraceEvent(SevError, "RecruitStorageError", self->id).error(e);
|
|
throw; // Any other error will bring down the cluster controller
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> clusterRecruitFromConfiguration( ClusterControllerData* self, RecruitFromConfigurationRequest req ) {
|
|
// At the moment this doesn't really need to be an actor (it always completes immediately)
|
|
TEST(true); //ClusterController RecruitTLogsRequest
|
|
loop {
|
|
try {
|
|
auto rep = self->findWorkersForConfiguration( req );
|
|
req.reply.send( rep );
|
|
return Void();
|
|
} catch (Error& e) {
|
|
if (e.code() == error_code_no_more_servers && self->goodRecruitmentTime.isReady()) {
|
|
self->outstandingRecruitmentRequests.push_back( req );
|
|
TraceEvent(SevWarn, "RecruitFromConfigurationNotAvailable", self->id).error(e);
|
|
return Void();
|
|
} else if(e.code() == error_code_operation_failed || e.code() == error_code_no_more_servers) {
|
|
//recruitment not good enough, try again
|
|
}
|
|
else {
|
|
TraceEvent(SevError, "RecruitFromConfigurationError", self->id).error(e);
|
|
throw; // goodbye, cluster controller
|
|
}
|
|
}
|
|
wait( lowPriorityDelay(SERVER_KNOBS->ATTEMPT_RECRUITMENT_DELAY) );
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> clusterRecruitRemoteFromConfiguration( ClusterControllerData* self, RecruitRemoteFromConfigurationRequest req ) {
|
|
// At the moment this doesn't really need to be an actor (it always completes immediately)
|
|
TEST(true); //ClusterController RecruitTLogsRequest
|
|
loop {
|
|
try {
|
|
RecruitRemoteFromConfigurationReply rep = self->findRemoteWorkersForConfiguration( req );
|
|
req.reply.send( rep );
|
|
return Void();
|
|
} catch (Error& e) {
|
|
if (e.code() == error_code_no_more_servers && self->goodRemoteRecruitmentTime.isReady()) {
|
|
self->outstandingRemoteRecruitmentRequests.push_back( req );
|
|
TraceEvent(SevWarn, "RecruitRemoteFromConfigurationNotAvailable", self->id).error(e);
|
|
return Void();
|
|
} else if(e.code() == error_code_operation_failed || e.code() == error_code_no_more_servers) {
|
|
//recruitment not good enough, try again
|
|
}
|
|
else {
|
|
TraceEvent(SevError, "RecruitRemoteFromConfigurationError", self->id).error(e);
|
|
throw; // goodbye, cluster controller
|
|
}
|
|
}
|
|
wait( lowPriorityDelay(SERVER_KNOBS->ATTEMPT_RECRUITMENT_DELAY) );
|
|
}
|
|
}
|
|
|
|
void clusterRegisterMaster( ClusterControllerData* self, RegisterMasterRequest const& req ) {
|
|
req.reply.send( Void() );
|
|
|
|
TraceEvent("MasterRegistrationReceived", self->id)
|
|
.detail("MasterId", req.id)
|
|
.detail("Master", req.mi.toString())
|
|
.detail("Tlogs", describe(req.logSystemConfig.tLogs))
|
|
.detail("Resolvers", req.resolvers.size())
|
|
.detail("RecoveryState", (int)req.recoveryState)
|
|
.detail("RegistrationCount", req.registrationCount)
|
|
.detail("Proxies", req.proxies.size())
|
|
.detail("RecoveryCount", req.recoveryCount)
|
|
.detail("Stalled", req.recoveryStalled)
|
|
.detail("OldestBackupEpoch", req.logSystemConfig.oldestBackupEpoch);
|
|
|
|
//make sure the request comes from an active database
|
|
auto db = &self->db;
|
|
if ( db->serverInfo->get().master.id() != req.id || req.registrationCount <= db->masterRegistrationCount ) {
|
|
TraceEvent("MasterRegistrationNotFound", self->id).detail("MasterId", req.id).detail("ExistingId", db->serverInfo->get().master.id()).detail("RegCount", req.registrationCount).detail("ExistingRegCount", db->masterRegistrationCount);
|
|
return;
|
|
}
|
|
|
|
if ( req.recoveryState == RecoveryState::FULLY_RECOVERED ) {
|
|
self->db.unfinishedRecoveries = 0;
|
|
self->db.logGenerations = 0;
|
|
ASSERT( !req.logSystemConfig.oldTLogs.size() );
|
|
} else {
|
|
self->db.logGenerations = std::max<int>(self->db.logGenerations, req.logSystemConfig.oldTLogs.size());
|
|
}
|
|
|
|
db->masterRegistrationCount = req.registrationCount;
|
|
db->recoveryStalled = req.recoveryStalled;
|
|
if ( req.configuration.present() ) {
|
|
db->config = req.configuration.get();
|
|
|
|
if ( req.recoveryState >= RecoveryState::ACCEPTING_COMMITS ) {
|
|
self->gotFullyRecoveredConfig = true;
|
|
db->fullyRecoveredConfig = req.configuration.get();
|
|
for ( auto& it : self->id_worker ) {
|
|
bool isExcludedFromConfig = db->fullyRecoveredConfig.isExcludedServer(it.second.details.interf.addresses());
|
|
if ( it.second.priorityInfo.isExcluded != isExcludedFromConfig ) {
|
|
it.second.priorityInfo.isExcluded = isExcludedFromConfig;
|
|
if( !it.second.reply.isSet() ) {
|
|
it.second.reply.send( RegisterWorkerReply( it.second.details.processClass, it.second.priorityInfo ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool isChanged = false;
|
|
auto dbInfo = self->db.serverInfo->get();
|
|
|
|
if (dbInfo.recoveryState != req.recoveryState) {
|
|
dbInfo.recoveryState = req.recoveryState;
|
|
isChanged = true;
|
|
}
|
|
|
|
if (dbInfo.priorCommittedLogServers != req.priorCommittedLogServers) {
|
|
dbInfo.priorCommittedLogServers = req.priorCommittedLogServers;
|
|
isChanged = true;
|
|
}
|
|
|
|
// Construct the client information
|
|
if (db->clientInfo->get().proxies != req.proxies) {
|
|
isChanged = true;
|
|
ClientDBInfo clientInfo;
|
|
clientInfo.id = deterministicRandom()->randomUniqueID();
|
|
clientInfo.proxies = req.proxies;
|
|
clientInfo.clientTxnInfoSampleRate = db->clientInfo->get().clientTxnInfoSampleRate;
|
|
clientInfo.clientTxnInfoSizeLimit = db->clientInfo->get().clientTxnInfoSizeLimit;
|
|
db->clientInfo->set( clientInfo );
|
|
dbInfo.client = db->clientInfo->get();
|
|
}
|
|
|
|
if( !dbInfo.logSystemConfig.isEqual(req.logSystemConfig) ) {
|
|
isChanged = true;
|
|
dbInfo.logSystemConfig = req.logSystemConfig;
|
|
}
|
|
|
|
if( dbInfo.resolvers != req.resolvers ) {
|
|
isChanged = true;
|
|
dbInfo.resolvers = req.resolvers;
|
|
}
|
|
|
|
if( dbInfo.recoveryCount != req.recoveryCount ) {
|
|
isChanged = true;
|
|
dbInfo.recoveryCount = req.recoveryCount;
|
|
}
|
|
|
|
if( isChanged ) {
|
|
dbInfo.id = deterministicRandom()->randomUniqueID();
|
|
dbInfo.infoGeneration = ++self->db.dbInfoCount;
|
|
self->db.serverInfo->set( dbInfo );
|
|
}
|
|
|
|
checkOutstandingRequests(self);
|
|
}
|
|
|
|
void registerWorker( RegisterWorkerRequest req, ClusterControllerData *self ) {
|
|
const WorkerInterface& w = req.wi;
|
|
ProcessClass newProcessClass = req.processClass;
|
|
auto info = self->id_worker.find( w.locality.processId() );
|
|
ClusterControllerPriorityInfo newPriorityInfo = req.priorityInfo;
|
|
newPriorityInfo.processClassFitness = newProcessClass.machineClassFitness(ProcessClass::ClusterController);
|
|
|
|
for(auto it : req.incompatiblePeers) {
|
|
self->db.incompatibleConnections[it] = now() + SERVER_KNOBS->INCOMPATIBLE_PEERS_LOGGING_INTERVAL;
|
|
}
|
|
self->removedDBInfoEndpoints.erase(w.updateServerDBInfo.getEndpoint());
|
|
|
|
if(info == self->id_worker.end()) {
|
|
TraceEvent("ClusterControllerActualWorkers", self->id).detail("WorkerId",w.id()).detail("ProcessId", w.locality.processId()).detail("ZoneId", w.locality.zoneId()).detail("DataHall", w.locality.dataHallId()).detail("PClass", req.processClass.toString()).detail("Workers", self->id_worker.size());
|
|
self->goodRecruitmentTime = lowPriorityDelay(SERVER_KNOBS->WAIT_FOR_GOOD_RECRUITMENT_DELAY);
|
|
self->goodRemoteRecruitmentTime = lowPriorityDelay(SERVER_KNOBS->WAIT_FOR_GOOD_REMOTE_RECRUITMENT_DELAY);
|
|
} else {
|
|
TraceEvent("ClusterControllerWorkerAlreadyRegistered", self->id).suppressFor(1.0).detail("WorkerId",w.id()).detail("ProcessId", w.locality.processId()).detail("ZoneId", w.locality.zoneId()).detail("DataHall", w.locality.dataHallId()).detail("PClass", req.processClass.toString()).detail("Workers", self->id_worker.size());
|
|
}
|
|
if ( w.address() == g_network->getLocalAddress() ) {
|
|
if(self->changingDcIds.get().first) {
|
|
if(self->changingDcIds.get().second.present()) {
|
|
newPriorityInfo.dcFitness = ClusterControllerPriorityInfo::calculateDCFitness( w.locality.dcId(), self->changingDcIds.get().second.get() );
|
|
}
|
|
} else if(self->changedDcIds.get().second.present()) {
|
|
newPriorityInfo.dcFitness = ClusterControllerPriorityInfo::calculateDCFitness( w.locality.dcId(), self->changedDcIds.get().second.get() );
|
|
}
|
|
} else {
|
|
if(!self->changingDcIds.get().first) {
|
|
if(self->changingDcIds.get().second.present()) {
|
|
newPriorityInfo.dcFitness = ClusterControllerPriorityInfo::calculateDCFitness( w.locality.dcId(), self->changingDcIds.get().second.get() );
|
|
}
|
|
} else if(self->changedDcIds.get().second.present()) {
|
|
newPriorityInfo.dcFitness = ClusterControllerPriorityInfo::calculateDCFitness( w.locality.dcId(), self->changedDcIds.get().second.get() );
|
|
}
|
|
}
|
|
|
|
// Check process class and exclusive property
|
|
if ( info == self->id_worker.end() || info->second.details.interf.id() != w.id() || req.generation >= info->second.gen ) {
|
|
if ( self->gotProcessClasses ) {
|
|
auto classIter = self->id_class.find(w.locality.processId());
|
|
|
|
if( classIter != self->id_class.end() && (classIter->second.classSource() == ProcessClass::DBSource || req.initialClass.classType() == ProcessClass::UnsetClass)) {
|
|
newProcessClass = classIter->second;
|
|
} else {
|
|
newProcessClass = req.initialClass;
|
|
}
|
|
newPriorityInfo.processClassFitness = newProcessClass.machineClassFitness(ProcessClass::ClusterController);
|
|
}
|
|
|
|
if ( self->gotFullyRecoveredConfig ) {
|
|
newPriorityInfo.isExcluded = self->db.fullyRecoveredConfig.isExcludedServer(w.addresses());
|
|
}
|
|
}
|
|
|
|
if( info == self->id_worker.end() ) {
|
|
self->id_worker[w.locality.processId()] = WorkerInfo( workerAvailabilityWatch( w, newProcessClass, self ), req.reply, req.generation, w, req.initialClass, newProcessClass, newPriorityInfo, req.degraded, req.issues );
|
|
if (!self->masterProcessId.present() && w.locality.processId() == self->db.serverInfo->get().master.locality.processId()) {
|
|
self->masterProcessId = w.locality.processId();
|
|
}
|
|
checkOutstandingRequests( self );
|
|
} else if( info->second.details.interf.id() != w.id() || req.generation >= info->second.gen ) {
|
|
if (!info->second.reply.isSet()) {
|
|
info->second.reply.send( Never() );
|
|
}
|
|
info->second.reply = req.reply;
|
|
info->second.details.processClass = newProcessClass;
|
|
info->second.priorityInfo = newPriorityInfo;
|
|
info->second.initialClass = req.initialClass;
|
|
info->second.details.degraded = req.degraded;
|
|
info->second.gen = req.generation;
|
|
info->second.issues = req.issues;
|
|
|
|
if(info->second.details.interf.id() != w.id()) {
|
|
self->removedDBInfoEndpoints.insert(info->second.details.interf.updateServerDBInfo.getEndpoint());
|
|
info->second.details.interf = w;
|
|
info->second.watcher = workerAvailabilityWatch( w, newProcessClass, self );
|
|
}
|
|
checkOutstandingRequests( self );
|
|
} else {
|
|
TEST(true); // Received an old worker registration request.
|
|
}
|
|
|
|
if (req.distributorInterf.present() && !self->db.serverInfo->get().distributor.present() &&
|
|
self->clusterControllerDcId == req.distributorInterf.get().locality.dcId() &&
|
|
!self->recruitingDistributor) {
|
|
const DataDistributorInterface& di = req.distributorInterf.get();
|
|
TraceEvent("CCRegisterDataDistributor", self->id).detail("DDID", di.id());
|
|
self->db.setDistributor(di);
|
|
}
|
|
if (req.ratekeeperInterf.present()) {
|
|
if((self->recruitingRatekeeperID.present() && self->recruitingRatekeeperID.get() != req.ratekeeperInterf.get().id()) ||
|
|
self->clusterControllerDcId != w.locality.dcId()) {
|
|
TraceEvent("CCHaltRegisteringRatekeeper", self->id)
|
|
.detail("RKID", req.ratekeeperInterf.get().id())
|
|
.detail("DcID", printable(self->clusterControllerDcId))
|
|
.detail("ReqDcID", printable(w.locality.dcId()))
|
|
.detail("RecruitingRKID",
|
|
self->recruitingRatekeeperID.present() ? self->recruitingRatekeeperID.get() : UID());
|
|
self->id_worker[w.locality.processId()].haltRatekeeper = brokenPromiseToNever(
|
|
req.ratekeeperInterf.get().haltRatekeeper.getReply(HaltRatekeeperRequest(self->id)));
|
|
} else if (!self->recruitingRatekeeperID.present()) {
|
|
const RatekeeperInterface& rki = req.ratekeeperInterf.get();
|
|
const auto& ratekeeper = self->db.serverInfo->get().ratekeeper;
|
|
TraceEvent("CCRegisterRatekeeper", self->id).detail("RKID", rki.id());
|
|
if (ratekeeper.present() && ratekeeper.get().id() != rki.id() && self->id_worker.count(ratekeeper.get().locality.processId())) {
|
|
TraceEvent("CCHaltPreviousRatekeeper", self->id).detail("RKID", ratekeeper.get().id())
|
|
.detail("DcID", printable(self->clusterControllerDcId))
|
|
.detail("ReqDcID", printable(w.locality.dcId()))
|
|
.detail("RecruitingRKID", self->recruitingRatekeeperID.present() ? self->recruitingRatekeeperID.get() : UID());
|
|
self->id_worker[ratekeeper.get().locality.processId()].haltRatekeeper = brokenPromiseToNever(ratekeeper.get().haltRatekeeper.getReply(HaltRatekeeperRequest(self->id)));
|
|
}
|
|
if(!ratekeeper.present() || ratekeeper.get().id() != rki.id()) {
|
|
self->db.setRatekeeper(rki);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Notify the worker to register again with new process class/exclusive property
|
|
if ( !req.reply.isSet() && newPriorityInfo != req.priorityInfo ) {
|
|
req.reply.send( RegisterWorkerReply(newProcessClass, newPriorityInfo) );
|
|
}
|
|
}
|
|
|
|
#define TIME_KEEPER_VERSION LiteralStringRef("1")
|
|
|
|
ACTOR Future<Void> timeKeeperSetVersion(ClusterControllerData *self) {
|
|
state Reference<ReadYourWritesTransaction> tr = Reference<ReadYourWritesTransaction>(new ReadYourWritesTransaction(self->cx));
|
|
loop {
|
|
try {
|
|
tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
|
|
tr->setOption(FDBTransactionOptions::LOCK_AWARE);
|
|
tr->setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
|
|
tr->set(timeKeeperVersionKey, TIME_KEEPER_VERSION);
|
|
wait(tr->commit());
|
|
break;
|
|
} catch (Error &e) {
|
|
wait(tr->onError(e));
|
|
}
|
|
}
|
|
|
|
return Void();
|
|
}
|
|
|
|
// This actor periodically gets read version and writes it to cluster with current timestamp as key. To avoid running
|
|
// out of space, it limits the max number of entries and clears old entries on each update. This mapping is used from
|
|
// backup and restore to get the version information for a timestamp.
|
|
ACTOR Future<Void> timeKeeper(ClusterControllerData *self) {
|
|
state KeyBackedMap<int64_t, Version> versionMap(timeKeeperPrefixRange.begin);
|
|
|
|
TraceEvent("TimeKeeperStarted");
|
|
|
|
wait(timeKeeperSetVersion(self));
|
|
|
|
loop {
|
|
state Reference<ReadYourWritesTransaction> tr = Reference<ReadYourWritesTransaction>(new ReadYourWritesTransaction(self->cx));
|
|
loop {
|
|
try {
|
|
if(!g_network->isSimulated()) {
|
|
// This is done to provide an arbitrary logged transaction every ~10s.
|
|
// FIXME: replace or augment this with logging on the proxy which tracks
|
|
// how long it is taking to hear responses from each other component.
|
|
|
|
UID debugID = deterministicRandom()->randomUniqueID();
|
|
TraceEvent("TimeKeeperCommit", debugID);
|
|
tr->debugTransaction(debugID);
|
|
}
|
|
tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
|
|
tr->setOption(FDBTransactionOptions::LOCK_AWARE);
|
|
tr->setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
|
|
|
|
Optional<Value> disableValue = wait( tr->get(timeKeeperDisableKey) );
|
|
if(disableValue.present()) {
|
|
break;
|
|
}
|
|
|
|
Version v = tr->getReadVersion().get();
|
|
int64_t currentTime = (int64_t)now();
|
|
versionMap.set(tr, currentTime, v);
|
|
|
|
int64_t ttl = currentTime - SERVER_KNOBS->TIME_KEEPER_DELAY * SERVER_KNOBS->TIME_KEEPER_MAX_ENTRIES;
|
|
if (ttl > 0) {
|
|
versionMap.erase(tr, 0, ttl);
|
|
}
|
|
|
|
wait(tr->commit());
|
|
break;
|
|
} catch (Error &e) {
|
|
wait(tr->onError(e));
|
|
}
|
|
}
|
|
|
|
wait(delay(SERVER_KNOBS->TIME_KEEPER_DELAY));
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> statusServer(FutureStream< StatusRequest> requests,
|
|
ClusterControllerData *self,
|
|
ServerCoordinators coordinators)
|
|
{
|
|
// Seconds since the END of the last GetStatus executed
|
|
state double last_request_time = 0.0;
|
|
|
|
// Place to accumulate a batch of requests to respond to
|
|
state std::vector<StatusRequest> requests_batch;
|
|
|
|
loop {
|
|
try {
|
|
// Wait til first request is ready
|
|
StatusRequest req = waitNext(requests);
|
|
++self->statusRequests;
|
|
requests_batch.push_back(req);
|
|
|
|
// Earliest time at which we may begin a new request
|
|
double next_allowed_request_time = last_request_time + SERVER_KNOBS->STATUS_MIN_TIME_BETWEEN_REQUESTS;
|
|
|
|
// Wait if needed to satisfy min_time knob, also allows more requets to queue up.
|
|
double minwait = std::max(next_allowed_request_time - now(), 0.0);
|
|
wait(delay(minwait));
|
|
|
|
// Get all requests that are ready right *now*, before GetStatus() begins.
|
|
// All of these requests will be responded to with the next GetStatus() result.
|
|
// If requests are batched, do not respond to more than MAX_STATUS_REQUESTS_PER_SECOND
|
|
// requests per second
|
|
while (requests.isReady()) {
|
|
auto req = requests.pop();
|
|
if (SERVER_KNOBS->STATUS_MIN_TIME_BETWEEN_REQUESTS > 0.0 &&
|
|
requests_batch.size() + 1 >
|
|
SERVER_KNOBS->STATUS_MIN_TIME_BETWEEN_REQUESTS * SERVER_KNOBS->MAX_STATUS_REQUESTS_PER_SECOND) {
|
|
TraceEvent(SevWarnAlways, "TooManyStatusRequests").suppressFor(1.0).detail("BatchSize", requests_batch.size());
|
|
req.reply.sendError(server_overloaded());
|
|
} else {
|
|
requests_batch.push_back(req);
|
|
}
|
|
}
|
|
|
|
// Get status but trap errors to send back to client.
|
|
vector<WorkerDetails> workers;
|
|
std::vector<ProcessIssues> workerIssues;
|
|
|
|
for(auto& it : self->id_worker) {
|
|
workers.push_back(it.second.details);
|
|
if(it.second.issues.size()) {
|
|
workerIssues.push_back(ProcessIssues(it.second.details.interf.address(), it.second.issues));
|
|
}
|
|
}
|
|
|
|
std::vector<NetworkAddress> incompatibleConnections;
|
|
for(auto it = self->db.incompatibleConnections.begin(); it != self->db.incompatibleConnections.end();) {
|
|
if(it->second < now()) {
|
|
it = self->db.incompatibleConnections.erase(it);
|
|
} else {
|
|
incompatibleConnections.push_back(it->first);
|
|
it++;
|
|
}
|
|
}
|
|
|
|
state ErrorOr<StatusReply> result = wait(errorOr(clusterGetStatus(self->db.serverInfo, self->cx, workers, workerIssues, &self->db.clientStatus, coordinators, incompatibleConnections, self->datacenterVersionDifference)));
|
|
|
|
if (result.isError() && result.getError().code() == error_code_actor_cancelled)
|
|
throw result.getError();
|
|
|
|
// Update last_request_time now because GetStatus is finished and the delay is to be measured between requests
|
|
last_request_time = now();
|
|
|
|
while (!requests_batch.empty())
|
|
{
|
|
if (result.isError())
|
|
requests_batch.back().reply.sendError(result.getError());
|
|
else
|
|
requests_batch.back().reply.send(result.get());
|
|
requests_batch.pop_back();
|
|
wait( yield() );
|
|
}
|
|
}
|
|
catch (Error &e) {
|
|
TraceEvent(SevError, "StatusServerError").error(e);
|
|
throw e;
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> monitorProcessClasses(ClusterControllerData *self) {
|
|
|
|
state ReadYourWritesTransaction trVer( self->db.db );
|
|
loop {
|
|
try {
|
|
trVer.setOption( FDBTransactionOptions::ACCESS_SYSTEM_KEYS );
|
|
trVer.setOption( FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE );
|
|
|
|
Optional<Value> val = wait(trVer.get(processClassVersionKey));
|
|
|
|
if (val.present())
|
|
break;
|
|
|
|
Standalone<RangeResultRef> processClasses = wait( trVer.getRange( processClassKeys, CLIENT_KNOBS->TOO_MANY ) );
|
|
ASSERT( !processClasses.more && processClasses.size() < CLIENT_KNOBS->TOO_MANY );
|
|
|
|
trVer.clear(processClassKeys);
|
|
trVer.set(processClassVersionKey, processClassVersionValue);
|
|
for (auto it : processClasses) {
|
|
UID processUid = decodeProcessClassKeyOld(it.key);
|
|
trVer.set(processClassKeyFor(processUid.toString()), it.value);
|
|
}
|
|
|
|
wait(trVer.commit());
|
|
TraceEvent("ProcessClassUpgrade");
|
|
break;
|
|
}
|
|
catch(Error &e) {
|
|
wait( trVer.onError(e) );
|
|
}
|
|
}
|
|
|
|
loop {
|
|
state ReadYourWritesTransaction tr( self->db.db );
|
|
|
|
loop {
|
|
try {
|
|
tr.setOption( FDBTransactionOptions::ACCESS_SYSTEM_KEYS );
|
|
tr.setOption( FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE );
|
|
Standalone<RangeResultRef> processClasses = wait( tr.getRange( processClassKeys, CLIENT_KNOBS->TOO_MANY ) );
|
|
ASSERT( !processClasses.more && processClasses.size() < CLIENT_KNOBS->TOO_MANY );
|
|
|
|
if(processClasses != self->lastProcessClasses || !self->gotProcessClasses) {
|
|
self->id_class.clear();
|
|
for( int i = 0; i < processClasses.size(); i++ ) {
|
|
auto c = decodeProcessClassValue( processClasses[i].value );
|
|
ASSERT( c.classSource() != ProcessClass::CommandLineSource );
|
|
self->id_class[decodeProcessClassKey( processClasses[i].key )] = c;
|
|
}
|
|
|
|
for( auto& w : self->id_worker ) {
|
|
auto classIter = self->id_class.find(w.first);
|
|
ProcessClass newProcessClass;
|
|
|
|
if( classIter != self->id_class.end() && (classIter->second.classSource() == ProcessClass::DBSource || w.second.initialClass.classType() == ProcessClass::UnsetClass) ) {
|
|
newProcessClass = classIter->second;
|
|
} else {
|
|
newProcessClass = w.second.initialClass;
|
|
}
|
|
|
|
|
|
if (newProcessClass != w.second.details.processClass) {
|
|
w.second.details.processClass = newProcessClass;
|
|
w.second.priorityInfo.processClassFitness = newProcessClass.machineClassFitness(ProcessClass::ClusterController);
|
|
if (!w.second.reply.isSet()) {
|
|
w.second.reply.send( RegisterWorkerReply(w.second.details.processClass, w.second.priorityInfo) );
|
|
}
|
|
}
|
|
}
|
|
|
|
self->lastProcessClasses = processClasses;
|
|
self->gotProcessClasses = true;
|
|
checkOutstandingRequests( self );
|
|
}
|
|
|
|
state Future<Void> watchFuture = tr.watch(processClassChangeKey);
|
|
wait(tr.commit());
|
|
wait(watchFuture);
|
|
break;
|
|
}
|
|
catch(Error &e) {
|
|
wait( tr.onError(e) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> monitorServerInfoConfig(ClusterControllerData::DBInfo* db) {
|
|
loop {
|
|
state ReadYourWritesTransaction tr(db->db);
|
|
loop {
|
|
try {
|
|
tr.setOption(FDBTransactionOptions::READ_SYSTEM_KEYS);
|
|
tr.setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
|
|
tr.setOption(FDBTransactionOptions::READ_LOCK_AWARE);
|
|
|
|
Optional<Value> configVal = wait(tr.get(latencyBandConfigKey));
|
|
Optional<LatencyBandConfig> config;
|
|
if(configVal.present()) {
|
|
config = LatencyBandConfig::parse(configVal.get());
|
|
}
|
|
|
|
auto serverInfo = db->serverInfo->get();
|
|
if(config != serverInfo.latencyBandConfig) {
|
|
TraceEvent("LatencyBandConfigChanged").detail("Present", config.present());
|
|
serverInfo.id = deterministicRandom()->randomUniqueID();
|
|
serverInfo.infoGeneration = ++db->dbInfoCount;
|
|
serverInfo.latencyBandConfig = config;
|
|
db->serverInfo->set(serverInfo);
|
|
}
|
|
|
|
state Future<Void> configChangeFuture = tr.watch(latencyBandConfigKey);
|
|
|
|
wait(tr.commit());
|
|
wait(configChangeFuture);
|
|
|
|
break;
|
|
}
|
|
catch (Error &e) {
|
|
wait(tr.onError(e));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> monitorClientTxnInfoConfigs(ClusterControllerData::DBInfo* db) {
|
|
loop {
|
|
state ReadYourWritesTransaction tr(db->db);
|
|
loop {
|
|
try {
|
|
tr.setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
|
|
tr.setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
|
|
state Optional<Value> rateVal = wait(tr.get(fdbClientInfoTxnSampleRate));
|
|
state Optional<Value> limitVal = wait(tr.get(fdbClientInfoTxnSizeLimit));
|
|
ClientDBInfo clientInfo = db->clientInfo->get();
|
|
double sampleRate = rateVal.present() ? BinaryReader::fromStringRef<double>(rateVal.get(), Unversioned()) : std::numeric_limits<double>::infinity();
|
|
int64_t sizeLimit = limitVal.present() ? BinaryReader::fromStringRef<int64_t>(limitVal.get(), Unversioned()) : -1;
|
|
if (sampleRate != clientInfo.clientTxnInfoSampleRate || sizeLimit != clientInfo.clientTxnInfoSampleRate) {
|
|
clientInfo.id = deterministicRandom()->randomUniqueID();
|
|
clientInfo.clientTxnInfoSampleRate = sampleRate;
|
|
clientInfo.clientTxnInfoSizeLimit = sizeLimit;
|
|
db->clientInfo->set(clientInfo);
|
|
}
|
|
|
|
state Future<Void> watchRateFuture = tr.watch(fdbClientInfoTxnSampleRate);
|
|
state Future<Void> watchLimitFuture = tr.watch(fdbClientInfoTxnSizeLimit);
|
|
wait(tr.commit());
|
|
choose {
|
|
when(wait(watchRateFuture)) { break; }
|
|
when (wait(watchLimitFuture)) { break; }
|
|
}
|
|
}
|
|
catch (Error &e) {
|
|
wait(tr.onError(e));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> updatedChangingDatacenters(ClusterControllerData *self) {
|
|
//do not change the cluster controller until all the processes have had a chance to register
|
|
wait( delay(SERVER_KNOBS->WAIT_FOR_GOOD_RECRUITMENT_DELAY) );
|
|
loop {
|
|
state Future<Void> onChange = self->desiredDcIds.onChange();
|
|
if(!self->desiredDcIds.get().present()) {
|
|
self->changingDcIds.set(std::make_pair(false,self->desiredDcIds.get()));
|
|
} else {
|
|
auto& worker = self->id_worker[self->clusterControllerProcessId];
|
|
uint8_t newFitness = ClusterControllerPriorityInfo::calculateDCFitness( worker.details.interf.locality.dcId(), self->desiredDcIds.get().get() );
|
|
self->changingDcIds.set(std::make_pair(worker.priorityInfo.dcFitness > newFitness,self->desiredDcIds.get()));
|
|
|
|
TraceEvent("UpdateChangingDatacenter", self->id).detail("OldFitness", worker.priorityInfo.dcFitness).detail("NewFitness", newFitness);
|
|
if ( worker.priorityInfo.dcFitness > newFitness ) {
|
|
worker.priorityInfo.dcFitness = newFitness;
|
|
if(!worker.reply.isSet()) {
|
|
worker.reply.send( RegisterWorkerReply( worker.details.processClass, worker.priorityInfo ) );
|
|
}
|
|
} else {
|
|
state int currentFit = ProcessClass::BestFit;
|
|
while(currentFit <= ProcessClass::NeverAssign) {
|
|
bool updated = false;
|
|
for ( auto& it : self->id_worker ) {
|
|
if( ( !it.second.priorityInfo.isExcluded && it.second.priorityInfo.processClassFitness == currentFit ) || currentFit == ProcessClass::NeverAssign ) {
|
|
uint8_t fitness = ClusterControllerPriorityInfo::calculateDCFitness( it.second.details.interf.locality.dcId(), self->changingDcIds.get().second.get() );
|
|
if ( it.first != self->clusterControllerProcessId && it.second.priorityInfo.dcFitness != fitness ) {
|
|
updated = true;
|
|
it.second.priorityInfo.dcFitness = fitness;
|
|
if(!it.second.reply.isSet()) {
|
|
it.second.reply.send( RegisterWorkerReply( it.second.details.processClass, it.second.priorityInfo ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(updated && currentFit < ProcessClass::NeverAssign) {
|
|
wait( delay(SERVER_KNOBS->CC_CLASS_DELAY) );
|
|
}
|
|
currentFit++;
|
|
}
|
|
}
|
|
}
|
|
|
|
wait(onChange);
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> updatedChangedDatacenters(ClusterControllerData *self) {
|
|
state Future<Void> changeDelay = delay(SERVER_KNOBS->CC_CHANGE_DELAY);
|
|
state Future<Void> onChange = self->changingDcIds.onChange();
|
|
loop {
|
|
choose {
|
|
when( wait(onChange) ) {
|
|
changeDelay = delay(SERVER_KNOBS->CC_CHANGE_DELAY);
|
|
onChange = self->changingDcIds.onChange();
|
|
}
|
|
when( wait(changeDelay) ) {
|
|
changeDelay = Never();
|
|
onChange = self->changingDcIds.onChange();
|
|
|
|
self->changedDcIds.set(self->changingDcIds.get());
|
|
if(self->changedDcIds.get().second.present()) {
|
|
TraceEvent("UpdateChangedDatacenter", self->id).detail("CCFirst", self->changedDcIds.get().first);
|
|
if( !self->changedDcIds.get().first ) {
|
|
auto& worker = self->id_worker[self->clusterControllerProcessId];
|
|
uint8_t newFitness = ClusterControllerPriorityInfo::calculateDCFitness( worker.details.interf.locality.dcId(), self->changedDcIds.get().second.get() );
|
|
if( worker.priorityInfo.dcFitness != newFitness ) {
|
|
worker.priorityInfo.dcFitness = newFitness;
|
|
if(!worker.reply.isSet()) {
|
|
worker.reply.send( RegisterWorkerReply( worker.details.processClass, worker.priorityInfo ) );
|
|
}
|
|
}
|
|
} else {
|
|
state int currentFit = ProcessClass::BestFit;
|
|
while(currentFit <= ProcessClass::NeverAssign) {
|
|
bool updated = false;
|
|
for ( auto& it : self->id_worker ) {
|
|
if( ( !it.second.priorityInfo.isExcluded && it.second.priorityInfo.processClassFitness == currentFit ) || currentFit == ProcessClass::NeverAssign ) {
|
|
uint8_t fitness = ClusterControllerPriorityInfo::calculateDCFitness( it.second.details.interf.locality.dcId(), self->changedDcIds.get().second.get() );
|
|
if ( it.first != self->clusterControllerProcessId && it.second.priorityInfo.dcFitness != fitness ) {
|
|
updated = true;
|
|
it.second.priorityInfo.dcFitness = fitness;
|
|
if(!it.second.reply.isSet()) {
|
|
it.second.reply.send( RegisterWorkerReply( it.second.details.processClass, it.second.priorityInfo ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(updated && currentFit < ProcessClass::NeverAssign) {
|
|
wait( delay(SERVER_KNOBS->CC_CLASS_DELAY) );
|
|
}
|
|
currentFit++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> updateDatacenterVersionDifference( ClusterControllerData *self ) {
|
|
state double lastLogTime = 0;
|
|
loop {
|
|
self->versionDifferenceUpdated = false;
|
|
if(self->db.serverInfo->get().recoveryState >= RecoveryState::ACCEPTING_COMMITS && self->db.config.usableRegions == 1) {
|
|
bool oldDifferenceTooLarge = !self->versionDifferenceUpdated || self->datacenterVersionDifference >= SERVER_KNOBS->MAX_VERSION_DIFFERENCE;
|
|
self->versionDifferenceUpdated = true;
|
|
self->datacenterVersionDifference = 0;
|
|
|
|
if(oldDifferenceTooLarge) {
|
|
checkOutstandingRequests(self);
|
|
}
|
|
|
|
wait(self->db.serverInfo->onChange());
|
|
continue;
|
|
}
|
|
|
|
state Optional<TLogInterface> primaryLog;
|
|
state Optional<TLogInterface> remoteLog;
|
|
if(self->db.serverInfo->get().recoveryState >= RecoveryState::ALL_LOGS_RECRUITED) {
|
|
for(auto& logSet : self->db.serverInfo->get().logSystemConfig.tLogs) {
|
|
if(logSet.isLocal && logSet.locality != tagLocalitySatellite) {
|
|
for(auto& tLog : logSet.tLogs) {
|
|
if(tLog.present()) {
|
|
primaryLog = tLog.interf();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(!logSet.isLocal) {
|
|
for(auto& tLog : logSet.tLogs) {
|
|
if(tLog.present()) {
|
|
remoteLog = tLog.interf();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!primaryLog.present() || !remoteLog.present()) {
|
|
wait(self->db.serverInfo->onChange());
|
|
continue;
|
|
}
|
|
|
|
state Future<Void> onChange = self->db.serverInfo->onChange();
|
|
loop {
|
|
state Future<TLogQueuingMetricsReply> primaryMetrics = brokenPromiseToNever( primaryLog.get().getQueuingMetrics.getReply( TLogQueuingMetricsRequest() ) );
|
|
state Future<TLogQueuingMetricsReply> remoteMetrics = brokenPromiseToNever( remoteLog.get().getQueuingMetrics.getReply( TLogQueuingMetricsRequest() ) );
|
|
|
|
wait( ( success(primaryMetrics) && success(remoteMetrics) ) || onChange );
|
|
if(onChange.isReady()) {
|
|
break;
|
|
}
|
|
|
|
if(primaryMetrics.get().v > 0 && remoteMetrics.get().v > 0) {
|
|
bool oldDifferenceTooLarge = !self->versionDifferenceUpdated || self->datacenterVersionDifference >= SERVER_KNOBS->MAX_VERSION_DIFFERENCE;
|
|
self->versionDifferenceUpdated = true;
|
|
self->datacenterVersionDifference = primaryMetrics.get().v - remoteMetrics.get().v;
|
|
|
|
if(oldDifferenceTooLarge && self->datacenterVersionDifference < SERVER_KNOBS->MAX_VERSION_DIFFERENCE) {
|
|
checkOutstandingRequests(self);
|
|
}
|
|
|
|
if(now() - lastLogTime > SERVER_KNOBS->CLUSTER_CONTROLLER_LOGGING_DELAY) {
|
|
lastLogTime = now();
|
|
TraceEvent("DatacenterVersionDifference", self->id).detail("Difference", self->datacenterVersionDifference);
|
|
}
|
|
}
|
|
|
|
wait( delay(SERVER_KNOBS->VERSION_LAG_METRIC_INTERVAL) || onChange );
|
|
if(onChange.isReady()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> doEmptyCommit(Database cx) {
|
|
state Transaction tr(cx);
|
|
loop {
|
|
try {
|
|
tr.setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
|
|
tr.setOption(FDBTransactionOptions::LOCK_AWARE);
|
|
tr.makeSelfConflicting();
|
|
wait(tr.commit());
|
|
return Void();
|
|
} catch( Error &e ) {
|
|
wait( tr.onError(e) );
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> handleForcedRecoveries( ClusterControllerData *self, ClusterControllerFullInterface interf ) {
|
|
loop {
|
|
state ForceRecoveryRequest req = waitNext( interf.clientInterface.forceRecovery.getFuture() );
|
|
TraceEvent("ForcedRecoveryStart", self->id).detail("ClusterControllerDcId", self->clusterControllerDcId).detail("DcId", req.dcId.printable());
|
|
state Future<Void> fCommit = doEmptyCommit(self->cx);
|
|
wait(fCommit || delay(SERVER_KNOBS->FORCE_RECOVERY_CHECK_DELAY));
|
|
if(!fCommit.isReady() || fCommit.isError()) {
|
|
if (self->clusterControllerDcId != req.dcId) {
|
|
vector<Optional<Key>> dcPriority;
|
|
dcPriority.push_back(req.dcId);
|
|
dcPriority.push_back(self->clusterControllerDcId);
|
|
self->desiredDcIds.set(dcPriority);
|
|
} else {
|
|
self->db.forceRecovery = true;
|
|
self->db.forceMasterFailure.trigger();
|
|
}
|
|
wait(fCommit);
|
|
}
|
|
TraceEvent("ForcedRecoveryFinish", self->id);
|
|
self->db.forceRecovery = false;
|
|
req.reply.send(Void());
|
|
}
|
|
}
|
|
|
|
ACTOR Future<DataDistributorInterface> startDataDistributor( ClusterControllerData *self ) {
|
|
wait(delay(0.0)); // If master fails at the same time, give it a chance to clear master PID.
|
|
|
|
TraceEvent("CCStartDataDistributor", self->id);
|
|
loop {
|
|
try {
|
|
state bool no_distributor = !self->db.serverInfo->get().distributor.present();
|
|
while (!self->masterProcessId.present() || self->masterProcessId != self->db.serverInfo->get().master.locality.processId() || self->db.serverInfo->get().recoveryState < RecoveryState::ACCEPTING_COMMITS) {
|
|
wait(self->db.serverInfo->onChange() || delay(SERVER_KNOBS->WAIT_FOR_GOOD_RECRUITMENT_DELAY));
|
|
}
|
|
if (no_distributor && self->db.serverInfo->get().distributor.present()) {
|
|
return self->db.serverInfo->get().distributor.get();
|
|
}
|
|
|
|
std::map<Optional<Standalone<StringRef>>, int> id_used = self->getUsedIds();
|
|
WorkerFitnessInfo data_distributor = self->getWorkerForRoleInDatacenter(self->clusterControllerDcId, ProcessClass::DataDistributor, ProcessClass::NeverAssign, self->db.config, id_used);
|
|
state WorkerDetails worker = data_distributor.worker;
|
|
if (self->onMasterIsBetter(worker, ProcessClass::DataDistributor)) {
|
|
worker = self->id_worker[self->masterProcessId.get()].details;
|
|
}
|
|
|
|
InitializeDataDistributorRequest req(deterministicRandom()->randomUniqueID());
|
|
TraceEvent("CCDataDistributorRecruit", self->id).detail("Addr", worker.interf.address());
|
|
|
|
ErrorOr<DataDistributorInterface> distributor = wait( worker.interf.dataDistributor.getReplyUnlessFailedFor(req, SERVER_KNOBS->WAIT_FOR_DISTRIBUTOR_JOIN_DELAY, 0) );
|
|
if (distributor.present()) {
|
|
TraceEvent("CCDataDistributorRecruited", self->id).detail("Addr", worker.interf.address());
|
|
return distributor.get();
|
|
}
|
|
}
|
|
catch (Error& e) {
|
|
TraceEvent("CCDataDistributorRecruitError", self->id).error(e);
|
|
if ( e.code() != error_code_no_more_servers ) {
|
|
throw;
|
|
}
|
|
}
|
|
wait( lowPriorityDelay(SERVER_KNOBS->ATTEMPT_RECRUITMENT_DELAY) );
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> monitorDataDistributor(ClusterControllerData *self) {
|
|
while(self->db.serverInfo->get().recoveryState < RecoveryState::ACCEPTING_COMMITS) {
|
|
wait(self->db.serverInfo->onChange());
|
|
}
|
|
|
|
loop {
|
|
if ( self->db.serverInfo->get().distributor.present() ) {
|
|
wait( waitFailureClient( self->db.serverInfo->get().distributor.get().waitFailure, SERVER_KNOBS->DD_FAILURE_TIME ) );
|
|
TraceEvent("CCDataDistributorDied", self->id)
|
|
.detail("DistributorId", self->db.serverInfo->get().distributor.get().id());
|
|
self->db.clearInterf(ProcessClass::DataDistributorClass);
|
|
} else {
|
|
self->recruitingDistributor = true;
|
|
DataDistributorInterface distributorInterf = wait( startDataDistributor(self) );
|
|
self->recruitingDistributor = false;
|
|
self->db.setDistributor(distributorInterf);
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> startRatekeeper(ClusterControllerData *self) {
|
|
wait(delay(0.0)); // If master fails at the same time, give it a chance to clear master PID.
|
|
|
|
TraceEvent("CCStartRatekeeper", self->id);
|
|
loop {
|
|
try {
|
|
state bool no_ratekeeper = !self->db.serverInfo->get().ratekeeper.present();
|
|
while (!self->masterProcessId.present() || self->masterProcessId != self->db.serverInfo->get().master.locality.processId() || self->db.serverInfo->get().recoveryState < RecoveryState::ACCEPTING_COMMITS) {
|
|
wait(self->db.serverInfo->onChange() || delay(SERVER_KNOBS->WAIT_FOR_GOOD_RECRUITMENT_DELAY));
|
|
}
|
|
if (no_ratekeeper && self->db.serverInfo->get().ratekeeper.present()) {
|
|
// Existing ratekeeper registers while waiting, so skip.
|
|
return Void();
|
|
}
|
|
|
|
std::map<Optional<Standalone<StringRef>>, int> id_used = self->getUsedIds();
|
|
WorkerFitnessInfo rkWorker = self->getWorkerForRoleInDatacenter(self->clusterControllerDcId, ProcessClass::Ratekeeper, ProcessClass::NeverAssign, self->db.config, id_used);
|
|
InitializeRatekeeperRequest req(deterministicRandom()->randomUniqueID());
|
|
state WorkerDetails worker = rkWorker.worker;
|
|
if (self->onMasterIsBetter(worker, ProcessClass::Ratekeeper)) {
|
|
worker = self->id_worker[self->masterProcessId.get()].details;
|
|
}
|
|
|
|
self->recruitingRatekeeperID = req.reqId;
|
|
TraceEvent("CCRecruitRatekeeper", self->id).detail("Addr", worker.interf.address()).detail("RKID", req.reqId);
|
|
|
|
ErrorOr<RatekeeperInterface> interf = wait( worker.interf.ratekeeper.getReplyUnlessFailedFor(req, SERVER_KNOBS->WAIT_FOR_RATEKEEPER_JOIN_DELAY, 0) );
|
|
if (interf.present()) {
|
|
self->recruitRatekeeper.set(false);
|
|
self->recruitingRatekeeperID = interf.get().id();
|
|
const auto& ratekeeper = self->db.serverInfo->get().ratekeeper;
|
|
TraceEvent("CCRatekeeperRecruited", self->id).detail("Addr", worker.interf.address()).detail("RKID", interf.get().id());
|
|
if (ratekeeper.present() && ratekeeper.get().id() != interf.get().id() && self->id_worker.count(ratekeeper.get().locality.processId())) {
|
|
TraceEvent("CCHaltRatekeeperAfterRecruit", self->id).detail("RKID", ratekeeper.get().id())
|
|
.detail("DcID", printable(self->clusterControllerDcId));
|
|
self->id_worker[ratekeeper.get().locality.processId()].haltRatekeeper = brokenPromiseToNever(ratekeeper.get().haltRatekeeper.getReply(HaltRatekeeperRequest(self->id)));
|
|
}
|
|
if(!ratekeeper.present() || ratekeeper.get().id() != interf.get().id()) {
|
|
self->db.setRatekeeper(interf.get());
|
|
}
|
|
checkOutstandingRequests(self);
|
|
return Void();
|
|
}
|
|
}
|
|
catch (Error& e) {
|
|
TraceEvent("CCRatekeeperRecruitError", self->id).error(e);
|
|
if ( e.code() != error_code_no_more_servers ) {
|
|
throw;
|
|
}
|
|
}
|
|
wait( lowPriorityDelay(SERVER_KNOBS->ATTEMPT_RECRUITMENT_DELAY) );
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> monitorRatekeeper(ClusterControllerData *self) {
|
|
while(self->db.serverInfo->get().recoveryState < RecoveryState::ACCEPTING_COMMITS) {
|
|
wait(self->db.serverInfo->onChange());
|
|
}
|
|
|
|
loop {
|
|
if ( self->db.serverInfo->get().ratekeeper.present() && !self->recruitRatekeeper.get() ) {
|
|
choose {
|
|
when(wait(waitFailureClient( self->db.serverInfo->get().ratekeeper.get().waitFailure, SERVER_KNOBS->RATEKEEPER_FAILURE_TIME ))) {
|
|
TraceEvent("CCRatekeeperDied", self->id)
|
|
.detail("RKID", self->db.serverInfo->get().ratekeeper.get().id());
|
|
self->db.clearInterf(ProcessClass::RatekeeperClass);
|
|
}
|
|
when(wait(self->recruitRatekeeper.onChange())) {}
|
|
}
|
|
} else {
|
|
wait( startRatekeeper(self) );
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> dbInfoUpdater( ClusterControllerData* self ) {
|
|
state Future<Void> dbInfoChange = self->db.serverInfo->onChange();
|
|
state Future<Void> updateDBInfo = self->updateDBInfo.onTrigger();
|
|
loop {
|
|
choose {
|
|
when(wait(updateDBInfo)) {
|
|
wait(delay(SERVER_KNOBS->DBINFO_BATCH_DELAY) || dbInfoChange);
|
|
}
|
|
when(wait(dbInfoChange)) {}
|
|
}
|
|
|
|
UpdateServerDBInfoRequest req;
|
|
if(dbInfoChange.isReady()) {
|
|
for(auto &it : self->id_worker) {
|
|
req.broadcastInfo.push_back(it.second.details.interf.updateServerDBInfo.getEndpoint());
|
|
}
|
|
} else {
|
|
for(auto it : self->removedDBInfoEndpoints) {
|
|
self->updateDBInfoEndpoints.erase(it);
|
|
}
|
|
req.broadcastInfo = std::vector<Endpoint>(self->updateDBInfoEndpoints.begin(), self->updateDBInfoEndpoints.end());
|
|
}
|
|
|
|
self->updateDBInfoEndpoints.clear();
|
|
self->removedDBInfoEndpoints.clear();
|
|
|
|
dbInfoChange = self->db.serverInfo->onChange();
|
|
updateDBInfo = self->updateDBInfo.onTrigger();
|
|
|
|
req.serializedDbInfo = BinaryWriter::toValue(self->db.serverInfo->get(), AssumeVersion(currentProtocolVersion));
|
|
|
|
TraceEvent("DBInfoStartBroadcast", self->id);
|
|
choose {
|
|
when(std::vector<Endpoint> notUpdated = wait( broadcastDBInfoRequest(req, SERVER_KNOBS->DBINFO_SEND_AMOUNT, Optional<Endpoint>(), false) )) {
|
|
TraceEvent("DBInfoFinishBroadcast", self->id);
|
|
for(auto &it : notUpdated) {
|
|
TraceEvent("DBInfoNotUpdated", self->id).detail("Addr", it.getPrimaryAddress());
|
|
}
|
|
if(notUpdated.size()) {
|
|
self->updateDBInfoEndpoints.insert(notUpdated.begin(), notUpdated.end());
|
|
self->updateDBInfo.trigger();
|
|
}
|
|
}
|
|
when(wait(dbInfoChange)) {}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> clusterControllerCore( ClusterControllerFullInterface interf, Future<Void> leaderFail, ServerCoordinators coordinators, LocalityData locality ) {
|
|
state ClusterControllerData self( interf, locality );
|
|
state Future<Void> coordinationPingDelay = delay( SERVER_KNOBS->WORKER_COORDINATION_PING_DELAY );
|
|
state uint64_t step = 0;
|
|
state Future<ErrorOr<Void>> error = errorOr( actorCollection( self.addActor.getFuture() ) );
|
|
|
|
self.addActor.send( clusterWatchDatabase( &self, &self.db ) ); // Start the master database
|
|
self.addActor.send( self.updateWorkerList.init( self.db.db ) );
|
|
self.addActor.send( statusServer( interf.clientInterface.databaseStatus.getFuture(), &self, coordinators));
|
|
self.addActor.send( timeKeeper(&self) );
|
|
self.addActor.send( monitorProcessClasses(&self) );
|
|
self.addActor.send( monitorServerInfoConfig(&self.db) );
|
|
self.addActor.send( monitorClientTxnInfoConfigs(&self.db) );
|
|
self.addActor.send( updatedChangingDatacenters(&self) );
|
|
self.addActor.send( updatedChangedDatacenters(&self) );
|
|
self.addActor.send( updateDatacenterVersionDifference(&self) );
|
|
self.addActor.send( handleForcedRecoveries(&self, interf) );
|
|
self.addActor.send( monitorDataDistributor(&self) );
|
|
self.addActor.send( monitorRatekeeper(&self) );
|
|
self.addActor.send( dbInfoUpdater(&self) );
|
|
self.addActor.send( traceCounters("ClusterControllerMetrics", self.id, SERVER_KNOBS->STORAGE_LOGGING_DELAY, &self.clusterControllerMetrics, self.id.toString() + "/ClusterControllerMetrics") );
|
|
self.addActor.send( traceRole(Role::CLUSTER_CONTROLLER, interf.id()) );
|
|
//printf("%s: I am the cluster controller\n", g_network->getLocalAddress().toString().c_str());
|
|
|
|
loop choose {
|
|
when( ErrorOr<Void> err = wait( error ) ) {
|
|
if (err.isError()) {
|
|
endRole(Role::CLUSTER_CONTROLLER, interf.id(), "Stop Received Error", false, err.getError());
|
|
}
|
|
else {
|
|
endRole(Role::CLUSTER_CONTROLLER, interf.id(), "Stop Received Signal", true);
|
|
}
|
|
|
|
// We shut down normally even if there was a serious error (so this fdbserver may be re-elected cluster controller)
|
|
return Void();
|
|
}
|
|
when( OpenDatabaseRequest req = waitNext( interf.clientInterface.openDatabase.getFuture() ) ) {
|
|
++self.openDatabaseRequests;
|
|
self.addActor.send(clusterOpenDatabase(&self.db, req));
|
|
}
|
|
when( RecruitFromConfigurationRequest req = waitNext( interf.recruitFromConfiguration.getFuture() ) ) {
|
|
self.addActor.send( clusterRecruitFromConfiguration( &self, req ) );
|
|
}
|
|
when( RecruitRemoteFromConfigurationRequest req = waitNext( interf.recruitRemoteFromConfiguration.getFuture() ) ) {
|
|
self.addActor.send( clusterRecruitRemoteFromConfiguration( &self, req ) );
|
|
}
|
|
when( RecruitStorageRequest req = waitNext( interf.recruitStorage.getFuture() ) ) {
|
|
clusterRecruitStorage( &self, req );
|
|
}
|
|
when( RegisterWorkerRequest req = waitNext( interf.registerWorker.getFuture() ) ) {
|
|
++self.registerWorkerRequests;
|
|
registerWorker( req, &self );
|
|
}
|
|
when( GetWorkersRequest req = waitNext( interf.getWorkers.getFuture() ) ) {
|
|
++self.getWorkersRequests;
|
|
vector<WorkerDetails> workers;
|
|
|
|
for(auto& it : self.id_worker) {
|
|
if ( (req.flags & GetWorkersRequest::NON_EXCLUDED_PROCESSES_ONLY) && self.db.config.isExcludedServer(it.second.details.interf.addresses()) ) {
|
|
continue;
|
|
}
|
|
|
|
if ( (req.flags & GetWorkersRequest::TESTER_CLASS_ONLY) && it.second.details.processClass.classType() != ProcessClass::TesterClass ) {
|
|
continue;
|
|
}
|
|
|
|
workers.push_back(it.second.details);
|
|
}
|
|
|
|
req.reply.send( workers );
|
|
}
|
|
when( GetClientWorkersRequest req = waitNext( interf.clientInterface.getClientWorkers.getFuture() ) ) {
|
|
++self.getClientWorkersRequests;
|
|
vector<ClientWorkerInterface> workers;
|
|
for(auto& it : self.id_worker) {
|
|
if (it.second.details.processClass.classType() != ProcessClass::TesterClass) {
|
|
workers.push_back(it.second.details.interf.clientInterface);
|
|
}
|
|
}
|
|
req.reply.send(workers);
|
|
}
|
|
when( wait( coordinationPingDelay ) ) {
|
|
CoordinationPingMessage message(self.id, step++);
|
|
for(auto& it : self.id_worker)
|
|
it.second.details.interf.coordinationPing.send(message);
|
|
coordinationPingDelay = delay( SERVER_KNOBS->WORKER_COORDINATION_PING_DELAY );
|
|
TraceEvent("CoordinationPingSent", self.id).detail("TimeStep", message.timeStep);
|
|
}
|
|
when( RegisterMasterRequest req = waitNext( interf.registerMaster.getFuture() ) ) {
|
|
++self.registerMasterRequests;
|
|
clusterRegisterMaster( &self, req );
|
|
}
|
|
when( GetServerDBInfoRequest req = waitNext( interf.getServerDBInfo.getFuture() ) ) {
|
|
self.addActor.send( clusterGetServerInfo(&self.db, req.knownServerInfoID, req.reply) );
|
|
}
|
|
when( wait( leaderFail ) ) {
|
|
// We are no longer the leader if this has changed.
|
|
endRole(Role::CLUSTER_CONTROLLER, interf.id(), "Leader Replaced", true);
|
|
TEST(true); // Lost Cluster Controller Role
|
|
return Void();
|
|
}
|
|
when( ReplyPromise<Void> ping = waitNext( interf.clientInterface.ping.getFuture() ) ) {
|
|
ping.send( Void() );
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> replaceInterface( ClusterControllerFullInterface interf ) {
|
|
loop {
|
|
if( interf.hasMessage() ) {
|
|
wait(delay(SERVER_KNOBS->REPLACE_INTERFACE_DELAY));
|
|
return Void();
|
|
}
|
|
wait(delay(SERVER_KNOBS->REPLACE_INTERFACE_CHECK_DELAY));
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> clusterController( ServerCoordinators coordinators, Reference<AsyncVar<Optional<ClusterControllerFullInterface>>> currentCC, bool hasConnected, Reference<AsyncVar<ClusterControllerPriorityInfo>> asyncPriorityInfo, LocalityData locality ) {
|
|
loop {
|
|
state ClusterControllerFullInterface cci;
|
|
state bool inRole = false;
|
|
cci.initEndpoints();
|
|
try {
|
|
//Register as a possible leader; wait to be elected
|
|
state Future<Void> leaderFail = tryBecomeLeader( coordinators, cci, currentCC, hasConnected, asyncPriorityInfo );
|
|
state Future<Void> shouldReplace = replaceInterface( cci );
|
|
|
|
while (!currentCC->get().present() || currentCC->get().get() != cci) {
|
|
choose {
|
|
when( wait(currentCC->onChange()) ) {}
|
|
when( wait(leaderFail) ) { ASSERT(false); throw internal_error(); }
|
|
when( wait(shouldReplace) ) { break; }
|
|
}
|
|
}
|
|
if(!shouldReplace.isReady()) {
|
|
shouldReplace = Future<Void>();
|
|
hasConnected = true;
|
|
startRole(Role::CLUSTER_CONTROLLER, cci.id(), UID());
|
|
inRole = true;
|
|
|
|
wait( clusterControllerCore( cci, leaderFail, coordinators, locality ) );
|
|
}
|
|
} catch(Error& e) {
|
|
if (inRole)
|
|
endRole(Role::CLUSTER_CONTROLLER, cci.id(), "Error", e.code() == error_code_actor_cancelled || e.code() == error_code_coordinators_changed, e);
|
|
else
|
|
TraceEvent( e.code() == error_code_coordinators_changed ? SevInfo : SevError, "ClusterControllerCandidateError", cci.id()).error(e);
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> clusterController( Reference<ClusterConnectionFile> connFile, Reference<AsyncVar<Optional<ClusterControllerFullInterface>>> currentCC, Reference<AsyncVar<ClusterControllerPriorityInfo>> asyncPriorityInfo, Future<Void> recoveredDiskFiles, LocalityData locality ) {
|
|
wait(recoveredDiskFiles);
|
|
state bool hasConnected = false;
|
|
loop {
|
|
try {
|
|
ServerCoordinators coordinators( connFile );
|
|
wait( clusterController( coordinators, currentCC, hasConnected, asyncPriorityInfo, locality ) );
|
|
} catch( Error &e ) {
|
|
if( e.code() != error_code_coordinators_changed )
|
|
throw; // Expected to terminate fdbserver
|
|
}
|
|
|
|
hasConnected = true;
|
|
}
|
|
}
|