2205 lines
91 KiB
C++
2205 lines
91 KiB
C++
/*
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* TLogServer.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 2013-2018 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 "flow/Hash3.h"
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#include "flow/Stats.h"
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#include "flow/UnitTest.h"
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#include "fdbclient/NativeAPI.actor.h"
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#include "fdbclient/Notified.h"
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#include "fdbclient/KeyRangeMap.h"
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#include "fdbclient/SystemData.h"
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#include "fdbserver/WorkerInterface.actor.h"
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#include "fdbserver/TLogInterface.h"
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#include "fdbserver/Knobs.h"
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#include "fdbserver/IKeyValueStore.h"
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#include "flow/ActorCollection.h"
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#include "fdbrpc/FailureMonitor.h"
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#include "fdbserver/IDiskQueue.h"
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#include "fdbrpc/sim_validation.h"
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#include "fdbrpc/simulator.h"
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#include "fdbserver/ServerDBInfo.h"
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#include "fdbserver/LogSystem.h"
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#include "fdbserver/WaitFailure.h"
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#include "fdbserver/RecoveryState.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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using std::pair;
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using std::make_pair;
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using std::min;
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using std::max;
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namespace oldTLog_6_0 {
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struct TLogQueueEntryRef {
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UID id;
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Version version;
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Version knownCommittedVersion;
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StringRef messages;
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TLogQueueEntryRef() : version(0), knownCommittedVersion(0) {}
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TLogQueueEntryRef(Arena &a, TLogQueueEntryRef const &from)
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: version(from.version), knownCommittedVersion(from.knownCommittedVersion), id(from.id), messages(a, from.messages) {
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}
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template <class Ar>
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void serialize(Ar& ar) {
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serializer(ar, version, messages, knownCommittedVersion, id);
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}
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size_t expectedSize() const {
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return messages.expectedSize();
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}
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};
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struct AlternativeTLogQueueEntryRef {
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UID id;
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Version version;
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Version knownCommittedVersion;
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std::vector<TagsAndMessage>* alternativeMessages;
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AlternativeTLogQueueEntryRef() : version(0), knownCommittedVersion(0), alternativeMessages(NULL) {}
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template <class Ar>
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void serialize(Ar& ar) {
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ASSERT(!ar.isDeserializing && alternativeMessages);
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uint32_t msgSize = expectedSize();
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serializer(ar, version, msgSize);
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for(auto& msg : *alternativeMessages) {
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ar.serializeBytes( msg.message );
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}
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serializer(ar, knownCommittedVersion, id);
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}
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uint32_t expectedSize() const {
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uint32_t msgSize = 0;
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for(auto& msg : *alternativeMessages) {
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msgSize += msg.message.size();
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}
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return msgSize;
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}
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};
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typedef Standalone<TLogQueueEntryRef> TLogQueueEntry;
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struct LogData;
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struct TLogData;
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struct TLogQueue : public IClosable {
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public:
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TLogQueue( IDiskQueue* queue, UID dbgid ) : queue(queue), dbgid(dbgid) {}
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// Each packet in the queue is
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// uint32_t payloadSize
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// uint8_t payload[payloadSize] (begins with uint64_t protocolVersion via IncludeVersion)
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// uint8_t validFlag
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// TLogQueue is a durable queue of TLogQueueEntry objects with an interface similar to IDiskQueue
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// TLogQueue pushes (but not commits) are atomic - after commit fails to return, a prefix of entire calls to push are durable. This is
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// implemented on top of the weaker guarantee of IDiskQueue::commit (that a prefix of bytes is durable) using validFlag and by
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// padding any incomplete packet with zeros after recovery.
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// Before calling push, pop, or commit, the user must call readNext() until it throws
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// end_of_stream(). It may not be called again thereafter.
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Future<TLogQueueEntry> readNext( TLogData* tLog ) {
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return readNext( this, tLog );
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}
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template <class T>
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void push( T const& qe, Reference<LogData> logData );
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void pop( Version upTo, Reference<LogData> logData );
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Future<Void> commit() { return queue->commit(); }
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// Implements IClosable
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virtual Future<Void> getError() { return queue->getError(); }
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virtual Future<Void> onClosed() { return queue->onClosed(); }
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virtual void dispose() { queue->dispose(); delete this; }
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virtual void close() { queue->close(); delete this; }
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private:
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IDiskQueue* queue;
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UID dbgid;
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void updateVersionSizes( const TLogQueueEntry& result, TLogData* tLog );
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ACTOR static Future<TLogQueueEntry> readNext( TLogQueue* self, TLogData* tLog ) {
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state TLogQueueEntry result;
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state int zeroFillSize = 0;
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loop {
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Standalone<StringRef> h = wait( self->queue->readNext( sizeof(uint32_t) ) );
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if (h.size() != sizeof(uint32_t)) {
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if (h.size()) {
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TEST( true ); // Zero fill within size field
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int payloadSize = 0;
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memcpy(&payloadSize, h.begin(), h.size());
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zeroFillSize = sizeof(uint32_t)-h.size(); // zero fill the size itself
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zeroFillSize += payloadSize+1; // and then the contents and valid flag
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}
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break;
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}
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state uint32_t payloadSize = *(uint32_t*)h.begin();
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ASSERT( payloadSize < (100<<20) );
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Standalone<StringRef> e = wait( self->queue->readNext( payloadSize+1 ) );
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if (e.size() != payloadSize+1) {
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TEST( true ); // Zero fill within payload
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zeroFillSize = payloadSize+1 - e.size();
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break;
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}
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if (e[payloadSize]) {
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Arena a = e.arena();
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ArenaReader ar( a, e.substr(0, payloadSize), IncludeVersion() );
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ar >> result;
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self->updateVersionSizes(result, tLog);
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return result;
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}
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}
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if (zeroFillSize) {
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TEST( true ); // Fixing a partial commit at the end of the tlog queue
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for(int i=0; i<zeroFillSize; i++)
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self->queue->push( StringRef((const uint8_t*)"",1) );
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}
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throw end_of_stream();
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}
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};
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////// Persistence format (for self->persistentData)
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// Immutable keys
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static const KeyValueRef persistFormat( LiteralStringRef( "Format" ), LiteralStringRef("FoundationDB/LogServer/2/4") );
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static const KeyRangeRef persistFormatReadableRange( LiteralStringRef("FoundationDB/LogServer/2/3"), LiteralStringRef("FoundationDB/LogServer/2/5") );
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static const KeyRangeRef persistRecoveryCountKeys = KeyRangeRef( LiteralStringRef( "DbRecoveryCount/" ), LiteralStringRef( "DbRecoveryCount0" ) );
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// Updated on updatePersistentData()
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static const KeyRangeRef persistCurrentVersionKeys = KeyRangeRef( LiteralStringRef( "version/" ), LiteralStringRef( "version0" ) );
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static const KeyRangeRef persistKnownCommittedVersionKeys = KeyRangeRef( LiteralStringRef( "knownCommitted/" ), LiteralStringRef( "knownCommitted0" ) );
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static const KeyRangeRef persistLocalityKeys = KeyRangeRef( LiteralStringRef( "Locality/" ), LiteralStringRef( "Locality0" ) );
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static const KeyRangeRef persistLogRouterTagsKeys = KeyRangeRef( LiteralStringRef( "LogRouterTags/" ), LiteralStringRef( "LogRouterTags0" ) );
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static const KeyRange persistTagMessagesKeys = prefixRange(LiteralStringRef("TagMsg/"));
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static const KeyRange persistTagPoppedKeys = prefixRange(LiteralStringRef("TagPop/"));
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static Key persistTagMessagesKey( UID id, Tag tag, Version version ) {
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BinaryWriter wr( Unversioned() );
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wr.serializeBytes(persistTagMessagesKeys.begin);
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wr << id;
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wr << tag;
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wr << bigEndian64( version );
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return wr.toValue();
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}
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static Key persistTagPoppedKey( UID id, Tag tag ) {
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BinaryWriter wr(Unversioned());
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wr.serializeBytes( persistTagPoppedKeys.begin );
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wr << id;
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wr << tag;
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return wr.toValue();
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}
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static Value persistTagPoppedValue( Version popped ) {
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return BinaryWriter::toValue( popped, Unversioned() );
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}
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static Tag decodeTagPoppedKey( KeyRef id, KeyRef key ) {
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Tag s;
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BinaryReader rd( key.removePrefix(persistTagPoppedKeys.begin).removePrefix(id), Unversioned() );
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rd >> s;
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return s;
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}
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static Version decodeTagPoppedValue( ValueRef value ) {
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return BinaryReader::fromStringRef<Version>( value, Unversioned() );
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}
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static StringRef stripTagMessagesKey( StringRef key ) {
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return key.substr( sizeof(UID) + sizeof(Tag) + persistTagMessagesKeys.begin.size() );
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}
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static Version decodeTagMessagesKey( StringRef key ) {
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return bigEndian64( BinaryReader::fromStringRef<Version>( stripTagMessagesKey(key), Unversioned() ) );
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}
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struct TLogData : NonCopyable {
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AsyncTrigger newLogData;
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Deque<UID> queueOrder;
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std::map<UID, Reference<struct LogData>> id_data;
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UID dbgid;
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IKeyValueStore* persistentData;
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IDiskQueue* rawPersistentQueue;
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TLogQueue *persistentQueue;
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int64_t diskQueueCommitBytes;
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AsyncVar<bool> largeDiskQueueCommitBytes; //becomes true when diskQueueCommitBytes is greater than MAX_QUEUE_COMMIT_BYTES
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Reference<AsyncVar<ServerDBInfo>> dbInfo;
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NotifiedVersion queueCommitEnd;
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Version queueCommitBegin;
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int64_t instanceID;
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int64_t bytesInput;
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int64_t bytesDurable;
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int64_t overheadBytesInput;
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int64_t overheadBytesDurable;
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struct PeekTrackerData {
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std::map<int, Promise<Version>> sequence_version;
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double lastUpdate;
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};
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std::map<UID, PeekTrackerData> peekTracker;
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WorkerCache<TLogInterface> tlogCache;
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PromiseStream<Future<Void>> sharedActors;
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Promise<Void> terminated;
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FlowLock concurrentLogRouterReads;
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FlowLock persistentDataCommitLock;
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Reference<AsyncVar<bool>> degraded;
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TLogData(UID dbgid, IKeyValueStore* persistentData, IDiskQueue * persistentQueue, Reference<AsyncVar<ServerDBInfo>> dbInfo, Reference<AsyncVar<bool>> degraded)
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: dbgid(dbgid), instanceID(g_random->randomUniqueID().first()),
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persistentData(persistentData), rawPersistentQueue(persistentQueue), persistentQueue(new TLogQueue(persistentQueue, dbgid)),
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dbInfo(dbInfo), degraded(degraded), queueCommitBegin(0), queueCommitEnd(0),
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diskQueueCommitBytes(0), largeDiskQueueCommitBytes(false), bytesInput(0), bytesDurable(0), overheadBytesInput(0), overheadBytesDurable(0),
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concurrentLogRouterReads(SERVER_KNOBS->CONCURRENT_LOG_ROUTER_READS)
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{
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}
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};
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struct LogData : NonCopyable, public ReferenceCounted<LogData> {
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struct TagData : NonCopyable, public ReferenceCounted<TagData> {
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std::deque<std::pair<Version, LengthPrefixedStringRef>> versionMessages;
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bool nothingPersistent; // true means tag is *known* to have no messages in persistentData. false means nothing.
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bool poppedRecently; // `popped` has changed since last updatePersistentData
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Version popped; // see popped version tracking contract below
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bool unpoppedRecovered;
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Tag tag;
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TagData( Tag tag, Version popped, bool nothingPersistent, bool poppedRecently, bool unpoppedRecovered ) : tag(tag), nothingPersistent(nothingPersistent), popped(popped), poppedRecently(poppedRecently), unpoppedRecovered(unpoppedRecovered) {}
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TagData(TagData&& r) BOOST_NOEXCEPT : versionMessages(std::move(r.versionMessages)), nothingPersistent(r.nothingPersistent), poppedRecently(r.poppedRecently), popped(r.popped), tag(r.tag), unpoppedRecovered(r.unpoppedRecovered) {}
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void operator= (TagData&& r) BOOST_NOEXCEPT {
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versionMessages = std::move(r.versionMessages);
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nothingPersistent = r.nothingPersistent;
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poppedRecently = r.poppedRecently;
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popped = r.popped;
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tag = r.tag;
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unpoppedRecovered = r.unpoppedRecovered;
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}
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// Erase messages not needed to update *from* versions >= before (thus, messages with toversion <= before)
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ACTOR Future<Void> eraseMessagesBefore( TagData *self, Version before, TLogData *tlogData, Reference<LogData> logData, int taskID ) {
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while(!self->versionMessages.empty() && self->versionMessages.front().first < before) {
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Version version = self->versionMessages.front().first;
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std::pair<int,int> &sizes = logData->version_sizes[version];
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int64_t messagesErased = 0;
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while(!self->versionMessages.empty() && self->versionMessages.front().first == version) {
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auto const& m = self->versionMessages.front();
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++messagesErased;
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if(self->tag != txsTag) {
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sizes.first -= m.second.expectedSize();
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} else {
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sizes.second -= m.second.expectedSize();
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}
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self->versionMessages.pop_front();
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}
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int64_t bytesErased = messagesErased * SERVER_KNOBS->VERSION_MESSAGES_ENTRY_BYTES_WITH_OVERHEAD;
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logData->bytesDurable += bytesErased;
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tlogData->bytesDurable += bytesErased;
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tlogData->overheadBytesDurable += bytesErased;
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wait(yield(taskID));
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}
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return Void();
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}
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Future<Void> eraseMessagesBefore(Version before, TLogData *tlogData, Reference<LogData> logData, int taskID) {
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return eraseMessagesBefore(this, before, tlogData, logData, taskID);
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}
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};
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Map<Version, IDiskQueue::location> versionLocation; // For the version of each entry that was push()ed, the end location of the serialized bytes
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/*
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Popped version tracking contract needed by log system to implement ILogCursor::popped():
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- Log server tracks for each (possible) tag a popped_version
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Impl: TagData::popped (in memory) and persistTagPoppedKeys (in persistentData)
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- popped_version(tag) is <= the maximum version for which log server (or a predecessor) is ever asked to pop the tag
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Impl: Only increased by tLogPop() in response to either a pop request or recovery from a predecessor
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- popped_version(tag) is > the maximum version for which log server is unable to peek messages due to previous pops (on this server or a predecessor)
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Impl: Increased by tLogPop() atomically with erasing messages from memory; persisted by updatePersistentData() atomically with erasing messages from store; messages are not erased from queue where popped_version is not persisted
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- LockTLogReply returns all tags which either have messages, or which have nonzero popped_versions
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Impl: tag_data is present for all such tags
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- peek(tag, v) returns the popped_version for tag if that is greater than v
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Impl: Check tag_data->popped (after all waits)
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*/
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AsyncTrigger stopCommit;
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bool stopped, initialized;
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DBRecoveryCount recoveryCount;
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VersionMetricHandle persistentDataVersion, persistentDataDurableVersion; // The last version number in the portion of the log (written|durable) to persistentData
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NotifiedVersion version, queueCommittedVersion;
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Version queueCommittingVersion;
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Version knownCommittedVersion, durableKnownCommittedVersion, minKnownCommittedVersion;
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Deque<std::pair<Version, Standalone<VectorRef<uint8_t>>>> messageBlocks;
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std::vector<std::vector<Reference<TagData>>> tag_data; //tag.locality | tag.id
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int unpoppedRecoveredTags;
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Reference<TagData> getTagData(Tag tag) {
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int idx = tag.locality >= 0 ? 2*tag.locality : 1-(2*tag.locality);
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if(idx >= tag_data.size()) {
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tag_data.resize(idx+1);
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}
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if(tag.id >= tag_data[idx].size()) {
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tag_data[idx].resize(tag.id+1);
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}
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return tag_data[idx][tag.id];
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}
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//only callable after getTagData returns a null reference
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Reference<TagData> createTagData(Tag tag, Version popped, bool nothingPersistent, bool poppedRecently, bool unpoppedRecovered) {
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if(tag.locality != tagLocalityLogRouter && allTags.size() && !allTags.count(tag) && popped <= recoveredAt) {
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popped = recoveredAt + 1;
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}
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Reference<TagData> newTagData = Reference<TagData>( new TagData(tag, popped, nothingPersistent, poppedRecently, unpoppedRecovered) );
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int idx = tag.locality >= 0 ? 2*tag.locality : 1-(2*tag.locality);
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tag_data[idx][tag.id] = newTagData;
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return newTagData;
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}
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Map<Version, std::pair<int,int>> version_sizes;
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CounterCollection cc;
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Counter bytesInput;
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Counter bytesDurable;
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UID logId;
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Version newPersistentDataVersion;
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Future<Void> removed;
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PromiseStream<Future<Void>> addActor;
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TLogData* tLogData;
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Promise<Void> recoveryComplete, committingQueue;
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Version unrecoveredBefore, recoveredAt;
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Reference<AsyncVar<Reference<ILogSystem>>> logSystem;
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Tag remoteTag;
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bool isPrimary;
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int logRouterTags;
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Version logRouterPoppedVersion, logRouterPopToVersion;
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int8_t locality;
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UID recruitmentID;
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std::set<Tag> allTags;
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Future<Void> terminated;
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explicit LogData(TLogData* tLogData, TLogInterface interf, Tag remoteTag, bool isPrimary, int logRouterTags, UID recruitmentID, std::vector<Tag> tags) : tLogData(tLogData), knownCommittedVersion(0), logId(interf.id()),
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cc("TLog", interf.id().toString()), bytesInput("BytesInput", cc), bytesDurable("BytesDurable", cc), remoteTag(remoteTag), isPrimary(isPrimary), logRouterTags(logRouterTags), recruitmentID(recruitmentID),
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logSystem(new AsyncVar<Reference<ILogSystem>>()), logRouterPoppedVersion(0), durableKnownCommittedVersion(0), minKnownCommittedVersion(0), allTags(tags.begin(), tags.end()), terminated(tLogData->terminated.getFuture()),
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// These are initialized differently on init() or recovery
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recoveryCount(), stopped(false), initialized(false), queueCommittingVersion(0), newPersistentDataVersion(invalidVersion), unrecoveredBefore(1), recoveredAt(1), unpoppedRecoveredTags(0),
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logRouterPopToVersion(0), locality(tagLocalityInvalid)
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{
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startRole(Role::TRANSACTION_LOG, interf.id(), UID());
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persistentDataVersion.init(LiteralStringRef("TLog.PersistentDataVersion"), cc.id);
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persistentDataDurableVersion.init(LiteralStringRef("TLog.PersistentDataDurableVersion"), cc.id);
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version.initMetric(LiteralStringRef("TLog.Version"), cc.id);
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queueCommittedVersion.initMetric(LiteralStringRef("TLog.QueueCommittedVersion"), cc.id);
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specialCounter(cc, "Version", [this](){ return this->version.get(); });
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specialCounter(cc, "SharedBytesInput", [tLogData](){ return tLogData->bytesInput; });
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specialCounter(cc, "SharedBytesDurable", [tLogData](){ return tLogData->bytesDurable; });
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specialCounter(cc, "SharedOverheadBytesInput", [tLogData](){ return tLogData->overheadBytesInput; });
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specialCounter(cc, "SharedOverheadBytesDurable", [tLogData](){ return tLogData->overheadBytesDurable; });
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specialCounter(cc, "KvstoreBytesUsed", [tLogData](){ return tLogData->persistentData->getStorageBytes().used; });
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specialCounter(cc, "KvstoreBytesFree", [tLogData](){ return tLogData->persistentData->getStorageBytes().free; });
|
|
specialCounter(cc, "KvstoreBytesAvailable", [tLogData](){ return tLogData->persistentData->getStorageBytes().available; });
|
|
specialCounter(cc, "KvstoreBytesTotal", [tLogData](){ return tLogData->persistentData->getStorageBytes().total; });
|
|
specialCounter(cc, "QueueDiskBytesUsed", [tLogData](){ return tLogData->rawPersistentQueue->getStorageBytes().used; });
|
|
specialCounter(cc, "QueueDiskBytesFree", [tLogData](){ return tLogData->rawPersistentQueue->getStorageBytes().free; });
|
|
specialCounter(cc, "QueueDiskBytesAvailable", [tLogData](){ return tLogData->rawPersistentQueue->getStorageBytes().available; });
|
|
specialCounter(cc, "QueueDiskBytesTotal", [tLogData](){ return tLogData->rawPersistentQueue->getStorageBytes().total; });
|
|
}
|
|
|
|
~LogData() {
|
|
endRole(Role::TRANSACTION_LOG, logId, "Error", true);
|
|
|
|
if(!terminated.isReady()) {
|
|
tLogData->bytesDurable += bytesInput.getValue() - bytesDurable.getValue();
|
|
TraceEvent("TLogBytesWhenRemoved", logId).detail("SharedBytesInput", tLogData->bytesInput).detail("SharedBytesDurable", tLogData->bytesDurable).detail("LocalBytesInput", bytesInput.getValue()).detail("LocalBytesDurable", bytesDurable.getValue());
|
|
|
|
ASSERT_ABORT(tLogData->bytesDurable <= tLogData->bytesInput);
|
|
|
|
Key logIdKey = BinaryWriter::toValue(logId,Unversioned());
|
|
tLogData->persistentData->clear( singleKeyRange(logIdKey.withPrefix(persistCurrentVersionKeys.begin)) );
|
|
tLogData->persistentData->clear( singleKeyRange(logIdKey.withPrefix(persistKnownCommittedVersionKeys.begin)) );
|
|
tLogData->persistentData->clear( singleKeyRange(logIdKey.withPrefix(persistLocalityKeys.begin)) );
|
|
tLogData->persistentData->clear( singleKeyRange(logIdKey.withPrefix(persistLogRouterTagsKeys.begin)) );
|
|
tLogData->persistentData->clear( singleKeyRange(logIdKey.withPrefix(persistRecoveryCountKeys.begin)) );
|
|
Key msgKey = logIdKey.withPrefix(persistTagMessagesKeys.begin);
|
|
tLogData->persistentData->clear( KeyRangeRef( msgKey, strinc(msgKey) ) );
|
|
Key poppedKey = logIdKey.withPrefix(persistTagPoppedKeys.begin);
|
|
tLogData->persistentData->clear( KeyRangeRef( poppedKey, strinc(poppedKey) ) );
|
|
}
|
|
}
|
|
|
|
LogEpoch epoch() const { return recoveryCount; }
|
|
};
|
|
|
|
template <class T>
|
|
void TLogQueue::push( T const& qe, Reference<LogData> logData ) {
|
|
BinaryWriter wr( Unversioned() ); // outer framing is not versioned
|
|
wr << uint32_t(0);
|
|
IncludeVersion().write(wr); // payload is versioned
|
|
wr << qe;
|
|
wr << uint8_t(1);
|
|
*(uint32_t*)wr.getData() = wr.getLength() - sizeof(uint32_t) - sizeof(uint8_t);
|
|
auto loc = queue->push( wr.toValue() );
|
|
//TraceEvent("TLogQueueVersionWritten", dbgid).detail("Size", wr.getLength() - sizeof(uint32_t) - sizeof(uint8_t)).detail("Loc", loc);
|
|
logData->versionLocation[qe.version] = loc;
|
|
}
|
|
void TLogQueue::pop( Version upTo, Reference<LogData> logData ) {
|
|
// Keep only the given and all subsequent version numbers
|
|
// Find the first version >= upTo
|
|
auto v = logData->versionLocation.lower_bound(upTo);
|
|
if (v == logData->versionLocation.begin()) return;
|
|
|
|
if(v == logData->versionLocation.end()) {
|
|
v = logData->versionLocation.lastItem();
|
|
}
|
|
else {
|
|
v.decrementNonEnd();
|
|
}
|
|
|
|
queue->pop( v->value );
|
|
logData->versionLocation.erase( logData->versionLocation.begin(), v ); // ... and then we erase that previous version and all prior versions
|
|
}
|
|
void TLogQueue::updateVersionSizes( const TLogQueueEntry& result, TLogData* tLog ) {
|
|
auto it = tLog->id_data.find(result.id);
|
|
if(it != tLog->id_data.end()) {
|
|
it->second->versionLocation[result.version] = queue->getNextReadLocation();
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> tLogLock( TLogData* self, ReplyPromise< TLogLockResult > reply, Reference<LogData> logData ) {
|
|
state Version stopVersion = logData->version.get();
|
|
|
|
TEST(true); // TLog stopped by recovering master
|
|
TEST( logData->stopped );
|
|
TEST( !logData->stopped );
|
|
|
|
TraceEvent("TLogStop", logData->logId).detail("Ver", stopVersion).detail("IsStopped", logData->stopped).detail("QueueCommitted", logData->queueCommittedVersion.get());
|
|
|
|
logData->stopped = true;
|
|
if(!logData->recoveryComplete.isSet()) {
|
|
logData->recoveryComplete.sendError(end_of_stream());
|
|
}
|
|
|
|
// Lock once the current version has been committed
|
|
wait( logData->queueCommittedVersion.whenAtLeast( stopVersion ) );
|
|
|
|
ASSERT(stopVersion == logData->version.get());
|
|
|
|
TLogLockResult result;
|
|
result.end = stopVersion;
|
|
result.knownCommittedVersion = logData->knownCommittedVersion;
|
|
|
|
TraceEvent("TLogStop2", self->dbgid).detail("LogId", logData->logId).detail("Ver", stopVersion).detail("IsStopped", logData->stopped).detail("QueueCommitted", logData->queueCommittedVersion.get()).detail("KnownCommitted", result.knownCommittedVersion);
|
|
|
|
reply.send( result );
|
|
return Void();
|
|
}
|
|
|
|
void updatePersistentPopped( TLogData* self, Reference<LogData> logData, Reference<LogData::TagData> data ) {
|
|
if (!data->poppedRecently) return;
|
|
self->persistentData->set(KeyValueRef( persistTagPoppedKey(logData->logId, data->tag), persistTagPoppedValue(data->popped) ));
|
|
data->poppedRecently = false;
|
|
|
|
if (data->nothingPersistent) return;
|
|
|
|
self->persistentData->clear( KeyRangeRef(
|
|
persistTagMessagesKey( logData->logId, data->tag, Version(0) ),
|
|
persistTagMessagesKey( logData->logId, data->tag, data->popped ) ) );
|
|
if (data->popped > logData->persistentDataVersion)
|
|
data->nothingPersistent = true;
|
|
}
|
|
|
|
ACTOR Future<Void> updatePersistentData( TLogData* self, Reference<LogData> logData, Version newPersistentDataVersion ) {
|
|
// PERSIST: Changes self->persistentDataVersion and writes and commits the relevant changes
|
|
ASSERT( newPersistentDataVersion <= logData->version.get() );
|
|
ASSERT( newPersistentDataVersion <= logData->queueCommittedVersion.get() );
|
|
ASSERT( newPersistentDataVersion > logData->persistentDataVersion );
|
|
ASSERT( logData->persistentDataVersion == logData->persistentDataDurableVersion );
|
|
|
|
//TraceEvent("UpdatePersistentData", self->dbgid).detail("Seq", newPersistentDataSeq);
|
|
|
|
state bool anyData = false;
|
|
|
|
// For all existing tags
|
|
state int tagLocality = 0;
|
|
state int tagId = 0;
|
|
|
|
for(tagLocality = 0; tagLocality < logData->tag_data.size(); tagLocality++) {
|
|
for(tagId = 0; tagId < logData->tag_data[tagLocality].size(); tagId++) {
|
|
state Reference<LogData::TagData> tagData = logData->tag_data[tagLocality][tagId];
|
|
if(tagData) {
|
|
state Version currentVersion = 0;
|
|
// Clear recently popped versions from persistentData if necessary
|
|
updatePersistentPopped( self, logData, tagData );
|
|
// Transfer unpopped messages with version numbers less than newPersistentDataVersion to persistentData
|
|
state std::deque<std::pair<Version, LengthPrefixedStringRef>>::iterator msg = tagData->versionMessages.begin();
|
|
while(msg != tagData->versionMessages.end() && msg->first <= newPersistentDataVersion) {
|
|
currentVersion = msg->first;
|
|
anyData = true;
|
|
tagData->nothingPersistent = false;
|
|
BinaryWriter wr( Unversioned() );
|
|
|
|
for(; msg != tagData->versionMessages.end() && msg->first == currentVersion; ++msg)
|
|
wr << msg->second.toStringRef();
|
|
|
|
self->persistentData->set( KeyValueRef( persistTagMessagesKey( logData->logId, tagData->tag, currentVersion ), wr.toValue() ) );
|
|
|
|
Future<Void> f = yield(TaskUpdateStorage);
|
|
if(!f.isReady()) {
|
|
wait(f);
|
|
msg = std::upper_bound(tagData->versionMessages.begin(), tagData->versionMessages.end(), std::make_pair(currentVersion, LengthPrefixedStringRef()), CompareFirst<std::pair<Version, LengthPrefixedStringRef>>());
|
|
}
|
|
}
|
|
|
|
wait(yield(TaskUpdateStorage));
|
|
}
|
|
}
|
|
}
|
|
|
|
self->persistentData->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistCurrentVersionKeys.begin), BinaryWriter::toValue(newPersistentDataVersion, Unversioned()) ) );
|
|
self->persistentData->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistKnownCommittedVersionKeys.begin), BinaryWriter::toValue(logData->knownCommittedVersion, Unversioned()) ) );
|
|
logData->persistentDataVersion = newPersistentDataVersion;
|
|
|
|
wait( self->persistentData->commit() ); // SOMEDAY: This seems to be running pretty often, should we slow it down???
|
|
wait( delay(0, TaskUpdateStorage) );
|
|
|
|
// Now that the changes we made to persistentData are durable, erase the data we moved from memory and the queue, increase bytesDurable accordingly, and update persistentDataDurableVersion.
|
|
|
|
TEST(anyData); // TLog moved data to persistentData
|
|
logData->persistentDataDurableVersion = newPersistentDataVersion;
|
|
|
|
for(tagLocality = 0; tagLocality < logData->tag_data.size(); tagLocality++) {
|
|
for(tagId = 0; tagId < logData->tag_data[tagLocality].size(); tagId++) {
|
|
if(logData->tag_data[tagLocality][tagId]) {
|
|
wait(logData->tag_data[tagLocality][tagId]->eraseMessagesBefore( newPersistentDataVersion+1, self, logData, TaskUpdateStorage ));
|
|
wait(yield(TaskUpdateStorage));
|
|
}
|
|
}
|
|
}
|
|
|
|
logData->version_sizes.erase(logData->version_sizes.begin(), logData->version_sizes.lower_bound(logData->persistentDataDurableVersion));
|
|
|
|
wait(yield(TaskUpdateStorage));
|
|
|
|
while(!logData->messageBlocks.empty() && logData->messageBlocks.front().first <= newPersistentDataVersion) {
|
|
int64_t bytesErased = int64_t(logData->messageBlocks.front().second.size()) * SERVER_KNOBS->TLOG_MESSAGE_BLOCK_OVERHEAD_FACTOR;
|
|
logData->bytesDurable += bytesErased;
|
|
self->bytesDurable += bytesErased;
|
|
logData->messageBlocks.pop_front();
|
|
wait(yield(TaskUpdateStorage));
|
|
}
|
|
|
|
if(logData->bytesDurable.getValue() > logData->bytesInput.getValue() || self->bytesDurable > self->bytesInput) {
|
|
TraceEvent(SevError, "BytesDurableTooLarge", logData->logId).detail("SharedBytesInput", self->bytesInput).detail("SharedBytesDurable", self->bytesDurable).detail("LocalBytesInput", logData->bytesInput.getValue()).detail("LocalBytesDurable", logData->bytesDurable.getValue());
|
|
}
|
|
|
|
ASSERT(logData->bytesDurable.getValue() <= logData->bytesInput.getValue());
|
|
ASSERT(self->bytesDurable <= self->bytesInput);
|
|
|
|
if( self->queueCommitEnd.get() > 0 )
|
|
self->persistentQueue->pop( newPersistentDataVersion+1, logData ); // SOMEDAY: this can cause a slow task (~0.5ms), presumably from erasing too many versions. Should we limit the number of versions cleared at a time?
|
|
|
|
return Void();
|
|
}
|
|
|
|
// This function (and updatePersistentData, which is called by this function) run at a low priority and can soak up all CPU resources.
|
|
// For this reason, they employ aggressive use of yields to avoid causing slow tasks that could introduce latencies for more important
|
|
// work (e.g. commits).
|
|
ACTOR Future<Void> updateStorage( TLogData* self ) {
|
|
while(self->queueOrder.size() && !self->id_data.count(self->queueOrder.front())) {
|
|
self->queueOrder.pop_front();
|
|
}
|
|
|
|
if(!self->queueOrder.size()) {
|
|
wait( delay(BUGGIFY ? SERVER_KNOBS->BUGGIFY_TLOG_STORAGE_MIN_UPDATE_INTERVAL : SERVER_KNOBS->TLOG_STORAGE_MIN_UPDATE_INTERVAL, TaskUpdateStorage) );
|
|
return Void();
|
|
}
|
|
|
|
state Reference<LogData> logData = self->id_data[self->queueOrder.front()];
|
|
state Version nextVersion = 0;
|
|
state int totalSize = 0;
|
|
|
|
state FlowLock::Releaser commitLockReleaser;
|
|
|
|
if(logData->stopped) {
|
|
if (self->bytesInput - self->bytesDurable >= SERVER_KNOBS->TLOG_SPILL_THRESHOLD) {
|
|
while(logData->persistentDataDurableVersion != logData->version.get()) {
|
|
totalSize = 0;
|
|
Map<Version, std::pair<int,int>>::iterator sizeItr = logData->version_sizes.begin();
|
|
nextVersion = logData->version.get();
|
|
while( totalSize < SERVER_KNOBS->UPDATE_STORAGE_BYTE_LIMIT && sizeItr != logData->version_sizes.end() )
|
|
{
|
|
totalSize += sizeItr->value.first + sizeItr->value.second;
|
|
++sizeItr;
|
|
nextVersion = sizeItr == logData->version_sizes.end() ? logData->version.get() : sizeItr->key;
|
|
}
|
|
|
|
wait( logData->queueCommittedVersion.whenAtLeast( nextVersion ) );
|
|
wait( delay(0, TaskUpdateStorage) );
|
|
|
|
//TraceEvent("TlogUpdatePersist", self->dbgid).detail("LogId", logData->logId).detail("NextVersion", nextVersion).detail("Version", logData->version.get()).detail("PersistentDataDurableVer", logData->persistentDataDurableVersion).detail("QueueCommitVer", logData->queueCommittedVersion.get()).detail("PersistDataVer", logData->persistentDataVersion);
|
|
if (nextVersion > logData->persistentDataVersion) {
|
|
wait( self->persistentDataCommitLock.take() );
|
|
commitLockReleaser = FlowLock::Releaser(self->persistentDataCommitLock);
|
|
wait( updatePersistentData(self, logData, nextVersion) );
|
|
commitLockReleaser.release();
|
|
} else {
|
|
wait( delay(BUGGIFY ? SERVER_KNOBS->BUGGIFY_TLOG_STORAGE_MIN_UPDATE_INTERVAL : SERVER_KNOBS->TLOG_STORAGE_MIN_UPDATE_INTERVAL, TaskUpdateStorage) );
|
|
}
|
|
|
|
if( logData->removed.isReady() ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(logData->persistentDataDurableVersion == logData->version.get()) {
|
|
self->queueOrder.pop_front();
|
|
}
|
|
wait( delay(0.0, TaskUpdateStorage) );
|
|
} else {
|
|
wait( delay(BUGGIFY ? SERVER_KNOBS->BUGGIFY_TLOG_STORAGE_MIN_UPDATE_INTERVAL : SERVER_KNOBS->TLOG_STORAGE_MIN_UPDATE_INTERVAL, TaskUpdateStorage) );
|
|
}
|
|
}
|
|
else if(logData->initialized) {
|
|
ASSERT(self->queueOrder.size() == 1);
|
|
if(logData->version_sizes.empty()) {
|
|
nextVersion = logData->version.get();
|
|
} else {
|
|
Map<Version, std::pair<int,int>>::iterator sizeItr = logData->version_sizes.begin();
|
|
while( totalSize < SERVER_KNOBS->UPDATE_STORAGE_BYTE_LIMIT && sizeItr != logData->version_sizes.end()
|
|
&& (logData->bytesInput.getValue() - logData->bytesDurable.getValue() - totalSize >= SERVER_KNOBS->TLOG_SPILL_THRESHOLD || sizeItr->value.first == 0) )
|
|
{
|
|
totalSize += sizeItr->value.first + sizeItr->value.second;
|
|
++sizeItr;
|
|
nextVersion = sizeItr == logData->version_sizes.end() ? logData->version.get() : sizeItr->key;
|
|
}
|
|
}
|
|
|
|
//TraceEvent("UpdateStorageVer", logData->logId).detail("NextVersion", nextVersion).detail("PersistentDataVersion", logData->persistentDataVersion).detail("TotalSize", totalSize);
|
|
|
|
wait( logData->queueCommittedVersion.whenAtLeast( nextVersion ) );
|
|
wait( delay(0, TaskUpdateStorage) );
|
|
|
|
if (nextVersion > logData->persistentDataVersion) {
|
|
wait( self->persistentDataCommitLock.take() );
|
|
commitLockReleaser = FlowLock::Releaser(self->persistentDataCommitLock);
|
|
wait( updatePersistentData(self, logData, nextVersion) );
|
|
commitLockReleaser.release();
|
|
}
|
|
|
|
if( totalSize < SERVER_KNOBS->UPDATE_STORAGE_BYTE_LIMIT ) {
|
|
wait( delay(BUGGIFY ? SERVER_KNOBS->BUGGIFY_TLOG_STORAGE_MIN_UPDATE_INTERVAL : SERVER_KNOBS->TLOG_STORAGE_MIN_UPDATE_INTERVAL, TaskUpdateStorage) );
|
|
}
|
|
else {
|
|
//recovery wants to commit to persistant data when updatePersistentData is not active, this delay ensures that immediately after
|
|
//updatePersist returns another one has not been started yet.
|
|
wait( delay(0.0, TaskUpdateStorage) );
|
|
}
|
|
} else {
|
|
wait( delay(BUGGIFY ? SERVER_KNOBS->BUGGIFY_TLOG_STORAGE_MIN_UPDATE_INTERVAL : SERVER_KNOBS->TLOG_STORAGE_MIN_UPDATE_INTERVAL, TaskUpdateStorage) );
|
|
}
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> updateStorageLoop( TLogData* self ) {
|
|
wait(delay(0, TaskUpdateStorage));
|
|
|
|
loop {
|
|
wait( updateStorage(self) );
|
|
}
|
|
}
|
|
|
|
void commitMessages( TLogData* self, Reference<LogData> logData, Version version, const std::vector<TagsAndMessage>& taggedMessages ) {
|
|
// SOMEDAY: This method of copying messages is reasonably memory efficient, but it's still a lot of bytes copied. Find a
|
|
// way to do the memory allocation right as we receive the messages in the network layer.
|
|
|
|
int64_t addedBytes = 0;
|
|
int64_t overheadBytes = 0;
|
|
int expectedBytes = 0;
|
|
int txsBytes = 0;
|
|
|
|
if(!taggedMessages.size()) {
|
|
return;
|
|
}
|
|
|
|
int msgSize = 0;
|
|
for(auto& i : taggedMessages) {
|
|
msgSize += i.message.size();
|
|
}
|
|
|
|
// Grab the last block in the blocks list so we can share its arena
|
|
// We pop all of the elements of it to create a "fresh" vector that starts at the end of the previous vector
|
|
Standalone<VectorRef<uint8_t>> block;
|
|
if(logData->messageBlocks.empty()) {
|
|
block = Standalone<VectorRef<uint8_t>>();
|
|
block.reserve(block.arena(), std::max<int64_t>(SERVER_KNOBS->TLOG_MESSAGE_BLOCK_BYTES, msgSize));
|
|
}
|
|
else {
|
|
block = logData->messageBlocks.back().second;
|
|
}
|
|
|
|
block.pop_front(block.size());
|
|
|
|
for(auto& msg : taggedMessages) {
|
|
if(msg.message.size() > block.capacity() - block.size()) {
|
|
logData->messageBlocks.push_back( std::make_pair(version, block) );
|
|
addedBytes += int64_t(block.size()) * SERVER_KNOBS->TLOG_MESSAGE_BLOCK_OVERHEAD_FACTOR;
|
|
block = Standalone<VectorRef<uint8_t>>();
|
|
block.reserve(block.arena(), std::max<int64_t>(SERVER_KNOBS->TLOG_MESSAGE_BLOCK_BYTES, msgSize));
|
|
}
|
|
|
|
block.append(block.arena(), msg.message.begin(), msg.message.size());
|
|
for(auto tag : msg.tags) {
|
|
if(logData->locality == tagLocalitySatellite) {
|
|
if(!(tag == txsTag || tag.locality == tagLocalityLogRouter)) {
|
|
continue;
|
|
}
|
|
} else if(!(logData->locality == tagLocalitySpecial || logData->locality == tag.locality || tag.locality < 0)) {
|
|
continue;
|
|
}
|
|
|
|
if(tag.locality == tagLocalityLogRouter) {
|
|
if(!logData->logRouterTags) {
|
|
continue;
|
|
}
|
|
tag.id = tag.id % logData->logRouterTags;
|
|
}
|
|
Reference<LogData::TagData> tagData = logData->getTagData(tag);
|
|
if(!tagData) {
|
|
tagData = logData->createTagData(tag, 0, true, true, false);
|
|
}
|
|
|
|
if (version >= tagData->popped) {
|
|
tagData->versionMessages.push_back(std::make_pair(version, LengthPrefixedStringRef((uint32_t*)(block.end() - msg.message.size()))));
|
|
if(tagData->versionMessages.back().second.expectedSize() > SERVER_KNOBS->MAX_MESSAGE_SIZE) {
|
|
TraceEvent(SevWarnAlways, "LargeMessage").detail("Size", tagData->versionMessages.back().second.expectedSize());
|
|
}
|
|
if (tag != txsTag) {
|
|
expectedBytes += tagData->versionMessages.back().second.expectedSize();
|
|
} else {
|
|
txsBytes += tagData->versionMessages.back().second.expectedSize();
|
|
}
|
|
|
|
// The factor of VERSION_MESSAGES_OVERHEAD is intended to be an overestimate of the actual memory used to store this data in a std::deque.
|
|
// In practice, this number is probably something like 528/512 ~= 1.03, but this could vary based on the implementation.
|
|
// There will also be a fixed overhead per std::deque, but its size should be trivial relative to the size of the TLog
|
|
// queue and can be thought of as increasing the capacity of the queue slightly.
|
|
overheadBytes += SERVER_KNOBS->VERSION_MESSAGES_ENTRY_BYTES_WITH_OVERHEAD;
|
|
}
|
|
}
|
|
|
|
msgSize -= msg.message.size();
|
|
}
|
|
logData->messageBlocks.push_back( std::make_pair(version, block) );
|
|
addedBytes += int64_t(block.size()) * SERVER_KNOBS->TLOG_MESSAGE_BLOCK_OVERHEAD_FACTOR;
|
|
addedBytes += overheadBytes;
|
|
|
|
logData->version_sizes[version] = std::make_pair(expectedBytes, txsBytes);
|
|
logData->bytesInput += addedBytes;
|
|
self->bytesInput += addedBytes;
|
|
self->overheadBytesInput += overheadBytes;
|
|
|
|
//TraceEvent("TLogPushed", self->dbgid).detail("Bytes", addedBytes).detail("MessageBytes", messages.size()).detail("Tags", tags.size()).detail("ExpectedBytes", expectedBytes).detail("MCount", mCount).detail("TCount", tCount);
|
|
}
|
|
|
|
void commitMessages( TLogData *self, Reference<LogData> logData, Version version, Arena arena, StringRef messages ) {
|
|
ArenaReader rd( arena, messages, Unversioned() );
|
|
int32_t messageLength, rawLength;
|
|
uint16_t tagCount;
|
|
uint32_t sub;
|
|
std::vector<TagsAndMessage> msgs;
|
|
while(!rd.empty()) {
|
|
TagsAndMessage tagsAndMsg;
|
|
rd.checkpoint();
|
|
rd >> messageLength >> sub >> tagCount;
|
|
tagsAndMsg.tags.resize(tagCount);
|
|
for(int i = 0; i < tagCount; i++) {
|
|
rd >> tagsAndMsg.tags[i];
|
|
}
|
|
rawLength = messageLength + sizeof(messageLength);
|
|
rd.rewind();
|
|
tagsAndMsg.message = StringRef((uint8_t const*)rd.readBytes(rawLength), rawLength);
|
|
msgs.push_back(std::move(tagsAndMsg));
|
|
}
|
|
commitMessages(self, logData, version, msgs);
|
|
}
|
|
|
|
Version poppedVersion( Reference<LogData> self, Tag tag) {
|
|
auto tagData = self->getTagData(tag);
|
|
if (!tagData) {
|
|
return self->recoveredAt;
|
|
}
|
|
return tagData->popped;
|
|
}
|
|
|
|
std::deque<std::pair<Version, LengthPrefixedStringRef>> & getVersionMessages( Reference<LogData> self, Tag tag ) {
|
|
auto tagData = self->getTagData(tag);
|
|
if (!tagData) {
|
|
static std::deque<std::pair<Version, LengthPrefixedStringRef>> empty;
|
|
return empty;
|
|
}
|
|
return tagData->versionMessages;
|
|
};
|
|
|
|
ACTOR Future<Void> tLogPop( TLogData* self, TLogPopRequest req, Reference<LogData> logData ) {
|
|
auto tagData = logData->getTagData(req.tag);
|
|
if (!tagData) {
|
|
tagData = logData->createTagData(req.tag, req.to, true, true, false);
|
|
} else if (req.to > tagData->popped) {
|
|
tagData->popped = req.to;
|
|
tagData->poppedRecently = true;
|
|
|
|
if(tagData->unpoppedRecovered && req.to > logData->recoveredAt) {
|
|
tagData->unpoppedRecovered = false;
|
|
logData->unpoppedRecoveredTags--;
|
|
TraceEvent("TLogPoppedTag", logData->logId).detail("Tags", logData->unpoppedRecoveredTags).detail("Tag", req.tag.toString()).detail("DurableKCVer", logData->durableKnownCommittedVersion).detail("RecoveredAt", logData->recoveredAt);
|
|
if(logData->unpoppedRecoveredTags == 0 && logData->durableKnownCommittedVersion >= logData->recoveredAt && logData->recoveryComplete.canBeSet()) {
|
|
logData->recoveryComplete.send(Void());
|
|
}
|
|
}
|
|
|
|
if ( req.to > logData->persistentDataDurableVersion )
|
|
wait(tagData->eraseMessagesBefore( req.to, self, logData, TaskTLogPop ));
|
|
//TraceEvent("TLogPop", self->dbgid).detail("Tag", req.tag).detail("To", req.to);
|
|
}
|
|
|
|
req.reply.send(Void());
|
|
return Void();
|
|
}
|
|
|
|
void peekMessagesFromMemory( Reference<LogData> self, TLogPeekRequest const& req, BinaryWriter& messages, Version& endVersion ) {
|
|
ASSERT( !messages.getLength() );
|
|
|
|
auto& deque = getVersionMessages(self, req.tag);
|
|
//TraceEvent("TLogPeekMem", self->dbgid).detail("Tag", req.tag1).detail("PDS", self->persistentDataSequence).detail("PDDS", self->persistentDataDurableSequence).detail("Oldest", map1.empty() ? 0 : map1.begin()->key ).detail("OldestMsgCount", map1.empty() ? 0 : map1.begin()->value.size());
|
|
|
|
Version begin = std::max( req.begin, self->persistentDataDurableVersion+1 );
|
|
auto it = std::lower_bound(deque.begin(), deque.end(), std::make_pair(begin, LengthPrefixedStringRef()), CompareFirst<std::pair<Version, LengthPrefixedStringRef>>());
|
|
|
|
Version currentVersion = -1;
|
|
for(; it != deque.end(); ++it) {
|
|
if(it->first != currentVersion) {
|
|
if (messages.getLength() >= SERVER_KNOBS->DESIRED_TOTAL_BYTES) {
|
|
endVersion = currentVersion + 1;
|
|
//TraceEvent("TLogPeekMessagesReached2", self->dbgid);
|
|
break;
|
|
}
|
|
|
|
currentVersion = it->first;
|
|
messages << int32_t(-1) << currentVersion;
|
|
}
|
|
|
|
messages << it->second.toStringRef();
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> tLogPeekMessages( TLogData* self, TLogPeekRequest req, Reference<LogData> logData ) {
|
|
state BinaryWriter messages(Unversioned());
|
|
state BinaryWriter messages2(Unversioned());
|
|
state int sequence = -1;
|
|
state UID peekId;
|
|
|
|
if(req.sequence.present()) {
|
|
try {
|
|
peekId = req.sequence.get().first;
|
|
sequence = req.sequence.get().second;
|
|
if(sequence > 0) {
|
|
auto& trackerData = self->peekTracker[peekId];
|
|
auto seqBegin = trackerData.sequence_version.begin();
|
|
while(trackerData.sequence_version.size() && seqBegin->first <= sequence - SERVER_KNOBS->PARALLEL_GET_MORE_REQUESTS) {
|
|
if(seqBegin->second.canBeSet()) {
|
|
seqBegin->second.sendError(timed_out());
|
|
}
|
|
trackerData.sequence_version.erase(seqBegin);
|
|
seqBegin = trackerData.sequence_version.begin();
|
|
}
|
|
|
|
if(trackerData.sequence_version.size() && sequence < seqBegin->first) {
|
|
throw timed_out();
|
|
}
|
|
|
|
trackerData.lastUpdate = now();
|
|
Version ver = wait(trackerData.sequence_version[sequence].getFuture());
|
|
req.begin = ver;
|
|
wait(yield());
|
|
}
|
|
} catch( Error &e ) {
|
|
if(e.code() == error_code_timed_out) {
|
|
req.reply.sendError(timed_out());
|
|
return Void();
|
|
} else {
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
if( req.returnIfBlocked && logData->version.get() < req.begin ) {
|
|
req.reply.sendError(end_of_stream());
|
|
return Void();
|
|
}
|
|
|
|
//TraceEvent("TLogPeekMessages0", self->dbgid).detail("ReqBeginEpoch", req.begin.epoch).detail("ReqBeginSeq", req.begin.sequence).detail("Epoch", self->epoch()).detail("PersistentDataSeq", self->persistentDataSequence).detail("Tag1", req.tag1).detail("Tag2", req.tag2);
|
|
// Wait until we have something to return that the caller doesn't already have
|
|
if( logData->version.get() < req.begin ) {
|
|
wait( logData->version.whenAtLeast( req.begin ) );
|
|
wait( delay(SERVER_KNOBS->TLOG_PEEK_DELAY, g_network->getCurrentTask()) );
|
|
}
|
|
|
|
if( req.tag.locality == tagLocalityLogRouter ) {
|
|
wait( self->concurrentLogRouterReads.take() );
|
|
state FlowLock::Releaser globalReleaser(self->concurrentLogRouterReads);
|
|
wait( delay(0.0, TaskLowPriority) );
|
|
}
|
|
|
|
Version poppedVer = poppedVersion(logData, req.tag);
|
|
if(poppedVer > req.begin) {
|
|
TLogPeekReply rep;
|
|
rep.maxKnownVersion = logData->version.get();
|
|
rep.minKnownCommittedVersion = logData->minKnownCommittedVersion;
|
|
rep.popped = poppedVer;
|
|
rep.end = poppedVer;
|
|
|
|
if(req.sequence.present()) {
|
|
auto& trackerData = self->peekTracker[peekId];
|
|
trackerData.lastUpdate = now();
|
|
if(trackerData.sequence_version.size() && sequence+1 < trackerData.sequence_version.begin()->first) {
|
|
req.reply.sendError(timed_out());
|
|
return Void();
|
|
}
|
|
auto& sequenceData = trackerData.sequence_version[sequence+1];
|
|
if(sequenceData.isSet()) {
|
|
if(sequenceData.getFuture().get() != rep.end) {
|
|
TEST(true); //tlog peek second attempt ended at a different version
|
|
req.reply.sendError(timed_out());
|
|
return Void();
|
|
}
|
|
} else {
|
|
sequenceData.send(rep.end);
|
|
}
|
|
rep.begin = req.begin;
|
|
}
|
|
|
|
req.reply.send( rep );
|
|
return Void();
|
|
}
|
|
|
|
state Version endVersion = logData->version.get() + 1;
|
|
|
|
//grab messages from disk
|
|
//TraceEvent("TLogPeekMessages", self->dbgid).detail("ReqBeginEpoch", req.begin.epoch).detail("ReqBeginSeq", req.begin.sequence).detail("Epoch", self->epoch()).detail("PersistentDataSeq", self->persistentDataSequence).detail("Tag1", req.tag1).detail("Tag2", req.tag2);
|
|
if( req.begin <= logData->persistentDataDurableVersion ) {
|
|
// Just in case the durable version changes while we are waiting for the read, we grab this data from memory. We may or may not actually send it depending on
|
|
// whether we get enough data from disk.
|
|
// SOMEDAY: Only do this if an initial attempt to read from disk results in insufficient data and the required data is no longer in memory
|
|
// SOMEDAY: Should we only send part of the messages we collected, to actually limit the size of the result?
|
|
|
|
peekMessagesFromMemory( logData, req, messages2, endVersion );
|
|
|
|
Standalone<VectorRef<KeyValueRef>> kvs = wait(
|
|
self->persistentData->readRange(KeyRangeRef(
|
|
persistTagMessagesKey(logData->logId, req.tag, req.begin),
|
|
persistTagMessagesKey(logData->logId, req.tag, logData->persistentDataDurableVersion + 1)), SERVER_KNOBS->DESIRED_TOTAL_BYTES, SERVER_KNOBS->DESIRED_TOTAL_BYTES));
|
|
|
|
//TraceEvent("TLogPeekResults", self->dbgid).detail("ForAddress", req.reply.getEndpoint().address).detail("Tag1Results", s1).detail("Tag2Results", s2).detail("Tag1ResultsLim", kv1.size()).detail("Tag2ResultsLim", kv2.size()).detail("Tag1ResultsLast", kv1.size() ? kv1[0].key : "").detail("Tag2ResultsLast", kv2.size() ? kv2[0].key : "").detail("Limited", limited).detail("NextEpoch", next_pos.epoch).detail("NextSeq", next_pos.sequence).detail("NowEpoch", self->epoch()).detail("NowSeq", self->sequence.getNextSequence());
|
|
|
|
for (auto &kv : kvs) {
|
|
auto ver = decodeTagMessagesKey(kv.key);
|
|
messages << int32_t(-1) << ver;
|
|
messages.serializeBytes(kv.value);
|
|
}
|
|
|
|
if (kvs.expectedSize() >= SERVER_KNOBS->DESIRED_TOTAL_BYTES)
|
|
endVersion = decodeTagMessagesKey(kvs.end()[-1].key) + 1;
|
|
else
|
|
messages.serializeBytes( messages2.toValue() );
|
|
} else {
|
|
peekMessagesFromMemory( logData, req, messages, endVersion );
|
|
//TraceEvent("TLogPeekResults", self->dbgid).detail("ForAddress", req.reply.getEndpoint().address).detail("MessageBytes", messages.getLength()).detail("NextEpoch", next_pos.epoch).detail("NextSeq", next_pos.sequence).detail("NowSeq", self->sequence.getNextSequence());
|
|
}
|
|
|
|
TLogPeekReply reply;
|
|
reply.maxKnownVersion = logData->version.get();
|
|
reply.minKnownCommittedVersion = logData->minKnownCommittedVersion;
|
|
reply.messages = messages.toValue();
|
|
reply.end = endVersion;
|
|
|
|
//TraceEvent("TlogPeek", self->dbgid).detail("LogId", logData->logId).detail("EndVer", reply.end).detail("MsgBytes", reply.messages.expectedSize()).detail("ForAddress", req.reply.getEndpoint().address);
|
|
|
|
if(req.sequence.present()) {
|
|
auto& trackerData = self->peekTracker[peekId];
|
|
trackerData.lastUpdate = now();
|
|
if(trackerData.sequence_version.size() && sequence+1 < trackerData.sequence_version.begin()->first) {
|
|
req.reply.sendError(timed_out());
|
|
return Void();
|
|
}
|
|
auto& sequenceData = trackerData.sequence_version[sequence+1];
|
|
if(sequenceData.isSet()) {
|
|
if(sequenceData.getFuture().get() != reply.end) {
|
|
TEST(true); //tlog peek second attempt ended at a different version
|
|
req.reply.sendError(timed_out());
|
|
return Void();
|
|
}
|
|
} else {
|
|
sequenceData.send(reply.end);
|
|
}
|
|
reply.begin = req.begin;
|
|
}
|
|
|
|
req.reply.send( reply );
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> watchDegraded(TLogData* self) {
|
|
//This delay is divided into multiple delays to avoid marking the tlog as degraded because of a single SlowTask
|
|
state int loopCount = 0;
|
|
while(loopCount < SERVER_KNOBS->TLOG_DEGRADED_DELAY_COUNT) {
|
|
wait(delay(SERVER_KNOBS->TLOG_DEGRADED_DURATION/SERVER_KNOBS->TLOG_DEGRADED_DELAY_COUNT, TaskLowPriority));
|
|
loopCount++;
|
|
}
|
|
TraceEvent(SevWarnAlways, "TLogDegraded", self->dbgid);
|
|
TEST(true); //6.0 TLog degraded
|
|
self->degraded->set(true);
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> doQueueCommit( TLogData* self, Reference<LogData> logData, std::vector<Reference<LogData>> missingFinalCommit ) {
|
|
state Version ver = logData->version.get();
|
|
state Version commitNumber = self->queueCommitBegin+1;
|
|
state Version knownCommittedVersion = logData->knownCommittedVersion;
|
|
self->queueCommitBegin = commitNumber;
|
|
logData->queueCommittingVersion = ver;
|
|
|
|
Future<Void> c = self->persistentQueue->commit();
|
|
self->diskQueueCommitBytes = 0;
|
|
self->largeDiskQueueCommitBytes.set(false);
|
|
|
|
state Future<Void> degraded = watchDegraded(self);
|
|
wait(c);
|
|
if(g_network->isSimulated() && !g_simulator.speedUpSimulation && BUGGIFY_WITH_PROB(0.0001)) {
|
|
wait(delay(6.0));
|
|
}
|
|
degraded.cancel();
|
|
wait(self->queueCommitEnd.whenAtLeast(commitNumber-1));
|
|
|
|
//Calling check_yield instead of yield to avoid a destruction ordering problem in simulation
|
|
if(g_network->check_yield(g_network->getCurrentTask())) {
|
|
wait(delay(0, g_network->getCurrentTask()));
|
|
}
|
|
|
|
ASSERT( ver > logData->queueCommittedVersion.get() );
|
|
|
|
logData->durableKnownCommittedVersion = knownCommittedVersion;
|
|
if(logData->unpoppedRecoveredTags == 0 && knownCommittedVersion >= logData->recoveredAt && logData->recoveryComplete.canBeSet()) {
|
|
TraceEvent("TLogRecoveryComplete", logData->logId).detail("Tags", logData->unpoppedRecoveredTags).detail("DurableKCVer", logData->durableKnownCommittedVersion).detail("RecoveredAt", logData->recoveredAt);
|
|
logData->recoveryComplete.send(Void());
|
|
}
|
|
|
|
//TraceEvent("TLogCommitDurable", self->dbgid).detail("Version", ver);
|
|
if(logData->logSystem->get() && (!logData->isPrimary || logData->logRouterPoppedVersion < logData->logRouterPopToVersion)) {
|
|
logData->logRouterPoppedVersion = ver;
|
|
logData->logSystem->get()->pop(ver, logData->remoteTag, knownCommittedVersion, logData->locality);
|
|
}
|
|
|
|
logData->queueCommittedVersion.set(ver);
|
|
self->queueCommitEnd.set(commitNumber);
|
|
|
|
for(auto& it : missingFinalCommit) {
|
|
TraceEvent("TLogCommitMissingFinalCommit", self->dbgid).detail("LogId", logData->logId).detail("Version", it->version.get()).detail("QueueVer", it->queueCommittedVersion.get());
|
|
TEST(true); //A TLog was replaced before having a chance to commit its queue
|
|
it->queueCommittedVersion.set(it->version.get());
|
|
}
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> commitQueue( TLogData* self ) {
|
|
state Reference<LogData> logData;
|
|
|
|
loop {
|
|
int foundCount = 0;
|
|
state std::vector<Reference<LogData>> missingFinalCommit;
|
|
for(auto it : self->id_data) {
|
|
if(!it.second->stopped) {
|
|
logData = it.second;
|
|
foundCount++;
|
|
} else if(it.second->version.get() > std::max(it.second->queueCommittingVersion, it.second->queueCommittedVersion.get())) {
|
|
missingFinalCommit.push_back(it.second);
|
|
}
|
|
}
|
|
|
|
ASSERT(foundCount < 2);
|
|
if(!foundCount) {
|
|
wait( self->newLogData.onTrigger() );
|
|
continue;
|
|
}
|
|
|
|
TraceEvent("CommitQueueNewLog", self->dbgid).detail("LogId", logData->logId).detail("Version", logData->version.get()).detail("Committing", logData->queueCommittingVersion).detail("Commmitted", logData->queueCommittedVersion.get());
|
|
if(logData->committingQueue.canBeSet()) {
|
|
logData->committingQueue.send(Void());
|
|
}
|
|
|
|
loop {
|
|
if(logData->stopped && logData->version.get() == std::max(logData->queueCommittingVersion, logData->queueCommittedVersion.get())) {
|
|
wait( logData->queueCommittedVersion.whenAtLeast(logData->version.get() ) );
|
|
break;
|
|
}
|
|
|
|
choose {
|
|
when(wait( logData->version.whenAtLeast( std::max(logData->queueCommittingVersion, logData->queueCommittedVersion.get()) + 1 ) ) ) {
|
|
while( self->queueCommitBegin != self->queueCommitEnd.get() && !self->largeDiskQueueCommitBytes.get() ) {
|
|
wait( self->queueCommitEnd.whenAtLeast(self->queueCommitBegin) || self->largeDiskQueueCommitBytes.onChange() );
|
|
}
|
|
self->sharedActors.send(doQueueCommit(self, logData, missingFinalCommit));
|
|
missingFinalCommit.clear();
|
|
}
|
|
when(wait(self->newLogData.onTrigger())) {}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> tLogCommit(
|
|
TLogData* self,
|
|
TLogCommitRequest req,
|
|
Reference<LogData> logData,
|
|
PromiseStream<Void> warningCollectorInput ) {
|
|
state Optional<UID> tlogDebugID;
|
|
if(req.debugID.present())
|
|
{
|
|
tlogDebugID = g_nondeterministic_random->randomUniqueID();
|
|
g_traceBatch.addAttach("CommitAttachID", req.debugID.get().first(), tlogDebugID.get().first());
|
|
g_traceBatch.addEvent("CommitDebug", tlogDebugID.get().first(), "TLog.tLogCommit.BeforeWaitForVersion");
|
|
}
|
|
|
|
logData->minKnownCommittedVersion = std::max(logData->minKnownCommittedVersion, req.minKnownCommittedVersion);
|
|
|
|
wait( logData->version.whenAtLeast( req.prevVersion ) );
|
|
|
|
//Calling check_yield instead of yield to avoid a destruction ordering problem in simulation
|
|
if(g_network->check_yield(g_network->getCurrentTask())) {
|
|
wait(delay(0, g_network->getCurrentTask()));
|
|
}
|
|
|
|
state double waitStartT = 0;
|
|
while( self->bytesInput - self->bytesDurable >= SERVER_KNOBS->TLOG_HARD_LIMIT_BYTES && !logData->stopped ) {
|
|
if (now() - waitStartT >= 1) {
|
|
TraceEvent(SevWarn, "TLogUpdateLag", logData->logId)
|
|
.detail("Version", logData->version.get())
|
|
.detail("PersistentDataVersion", logData->persistentDataVersion)
|
|
.detail("PersistentDataDurableVersion", logData->persistentDataDurableVersion);
|
|
waitStartT = now();
|
|
}
|
|
wait( delayJittered(.005, TaskTLogCommit) );
|
|
}
|
|
|
|
if(logData->stopped) {
|
|
req.reply.sendError( tlog_stopped() );
|
|
return Void();
|
|
}
|
|
|
|
if (logData->version.get() == req.prevVersion) { // Not a duplicate (check relies on no waiting between here and self->version.set() below!)
|
|
if(req.debugID.present())
|
|
g_traceBatch.addEvent("CommitDebug", tlogDebugID.get().first(), "TLog.tLogCommit.Before");
|
|
|
|
//TraceEvent("TLogCommit", logData->logId).detail("Version", req.version);
|
|
commitMessages(self, logData, req.version, req.arena, req.messages);
|
|
|
|
logData->knownCommittedVersion = std::max(logData->knownCommittedVersion, req.knownCommittedVersion);
|
|
|
|
// Log the changes to the persistent queue, to be committed by commitQueue()
|
|
TLogQueueEntryRef qe;
|
|
qe.version = req.version;
|
|
qe.knownCommittedVersion = logData->knownCommittedVersion;
|
|
qe.messages = req.messages;
|
|
qe.id = logData->logId;
|
|
self->persistentQueue->push( qe, logData );
|
|
|
|
self->diskQueueCommitBytes += qe.expectedSize();
|
|
if( self->diskQueueCommitBytes > SERVER_KNOBS->MAX_QUEUE_COMMIT_BYTES ) {
|
|
self->largeDiskQueueCommitBytes.set(true);
|
|
}
|
|
|
|
// Notifies the commitQueue actor to commit persistentQueue, and also unblocks tLogPeekMessages actors
|
|
logData->version.set( req.version );
|
|
|
|
if(req.debugID.present())
|
|
g_traceBatch.addEvent("CommitDebug", tlogDebugID.get().first(), "TLog.tLogCommit.AfterTLogCommit");
|
|
}
|
|
// Send replies only once all prior messages have been received and committed.
|
|
state Future<Void> stopped = logData->stopCommit.onTrigger();
|
|
wait( timeoutWarning( logData->queueCommittedVersion.whenAtLeast( req.version ) || stopped, 0.1, warningCollectorInput ) );
|
|
|
|
if(stopped.isReady()) {
|
|
ASSERT(logData->stopped);
|
|
req.reply.sendError( tlog_stopped() );
|
|
return Void();
|
|
}
|
|
|
|
if(req.debugID.present())
|
|
g_traceBatch.addEvent("CommitDebug", tlogDebugID.get().first(), "TLog.tLogCommit.After");
|
|
|
|
req.reply.send( logData->durableKnownCommittedVersion );
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> initPersistentState( TLogData* self, Reference<LogData> logData ) {
|
|
wait( self->persistentDataCommitLock.take() );
|
|
state FlowLock::Releaser commitLockReleaser(self->persistentDataCommitLock);
|
|
|
|
// PERSIST: Initial setup of persistentData for a brand new tLog for a new database
|
|
state IKeyValueStore *storage = self->persistentData;
|
|
wait(storage->init());
|
|
storage->set( persistFormat );
|
|
storage->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistCurrentVersionKeys.begin), BinaryWriter::toValue(logData->version.get(), Unversioned()) ) );
|
|
storage->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistKnownCommittedVersionKeys.begin), BinaryWriter::toValue(logData->knownCommittedVersion, Unversioned()) ) );
|
|
storage->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistLocalityKeys.begin), BinaryWriter::toValue(logData->locality, Unversioned()) ) );
|
|
storage->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistLogRouterTagsKeys.begin), BinaryWriter::toValue(logData->logRouterTags, Unversioned()) ) );
|
|
storage->set( KeyValueRef( BinaryWriter::toValue(logData->logId,Unversioned()).withPrefix(persistRecoveryCountKeys.begin), BinaryWriter::toValue(logData->recoveryCount, Unversioned()) ) );
|
|
|
|
for(auto tag : logData->allTags) {
|
|
ASSERT(!logData->getTagData(tag));
|
|
logData->createTagData(tag, 0, true, true, true);
|
|
updatePersistentPopped( self, logData, logData->getTagData(tag) );
|
|
}
|
|
|
|
TraceEvent("TLogInitCommit", logData->logId);
|
|
wait( self->persistentData->commit() );
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> rejoinMasters( TLogData* self, TLogInterface tli, DBRecoveryCount recoveryCount, Future<Void> registerWithMaster, bool isPrimary ) {
|
|
state UID lastMasterID(0,0);
|
|
loop {
|
|
auto const& inf = self->dbInfo->get();
|
|
bool isDisplaced = !std::count( inf.priorCommittedLogServers.begin(), inf.priorCommittedLogServers.end(), tli.id() );
|
|
if(isPrimary) {
|
|
isDisplaced = isDisplaced && inf.recoveryCount >= recoveryCount && inf.recoveryState != RecoveryState::UNINITIALIZED;
|
|
} else {
|
|
isDisplaced = isDisplaced && ( ( inf.recoveryCount > recoveryCount && inf.recoveryState != RecoveryState::UNINITIALIZED ) || ( inf.recoveryCount == recoveryCount && inf.recoveryState == RecoveryState::FULLY_RECOVERED ) );
|
|
}
|
|
if(isDisplaced) {
|
|
for(auto& log : inf.logSystemConfig.tLogs) {
|
|
if( std::count( log.tLogs.begin(), log.tLogs.end(), tli.id() ) ) {
|
|
isDisplaced = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(isDisplaced) {
|
|
for(auto& old : inf.logSystemConfig.oldTLogs) {
|
|
for(auto& log : old.tLogs) {
|
|
if( std::count( log.tLogs.begin(), log.tLogs.end(), tli.id() ) ) {
|
|
isDisplaced = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ( isDisplaced )
|
|
{
|
|
TraceEvent("TLogDisplaced", tli.id()).detail("Reason", "DBInfoDoesNotContain").detail("RecoveryCount", recoveryCount).detail("InfRecoveryCount", inf.recoveryCount).detail("RecoveryState", (int)inf.recoveryState)
|
|
.detail("LogSysConf", describe(inf.logSystemConfig.tLogs)).detail("PriorLogs", describe(inf.priorCommittedLogServers)).detail("OldLogGens", inf.logSystemConfig.oldTLogs.size());
|
|
if (BUGGIFY) wait( delay( SERVER_KNOBS->BUGGIFY_WORKER_REMOVED_MAX_LAG * g_random->random01() ) );
|
|
throw worker_removed();
|
|
}
|
|
|
|
if( registerWithMaster.isReady() ) {
|
|
if ( self->dbInfo->get().master.id() != lastMasterID) {
|
|
// The TLogRejoinRequest is needed to establish communications with a new master, which doesn't have our TLogInterface
|
|
TLogRejoinRequest req(tli);
|
|
TraceEvent("TLogRejoining", self->dbgid).detail("Master", self->dbInfo->get().master.id());
|
|
choose {
|
|
when ( bool success = wait( brokenPromiseToNever( self->dbInfo->get().master.tlogRejoin.getReply( req ) ) ) ) {
|
|
if (success)
|
|
lastMasterID = self->dbInfo->get().master.id();
|
|
}
|
|
when ( wait( self->dbInfo->onChange() ) ) { }
|
|
}
|
|
} else {
|
|
wait( self->dbInfo->onChange() );
|
|
}
|
|
} else {
|
|
wait( registerWithMaster || self->dbInfo->onChange() );
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> respondToRecovered( TLogInterface tli, Promise<Void> recoveryComplete ) {
|
|
state bool finishedRecovery = true;
|
|
try {
|
|
wait( recoveryComplete.getFuture() );
|
|
} catch( Error &e ) {
|
|
if(e.code() != error_code_end_of_stream) {
|
|
throw;
|
|
}
|
|
finishedRecovery = false;
|
|
}
|
|
TraceEvent("TLogRespondToRecovered", tli.id()).detail("Finished", finishedRecovery);
|
|
loop {
|
|
TLogRecoveryFinishedRequest req = waitNext( tli.recoveryFinished.getFuture() );
|
|
if(finishedRecovery) {
|
|
req.reply.send(Void());
|
|
} else {
|
|
req.reply.send(Never());
|
|
}
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> cleanupPeekTrackers( TLogData* self ) {
|
|
loop {
|
|
double minTimeUntilExpiration = SERVER_KNOBS->PEEK_TRACKER_EXPIRATION_TIME;
|
|
auto it = self->peekTracker.begin();
|
|
while(it != self->peekTracker.end()) {
|
|
double timeUntilExpiration = it->second.lastUpdate + SERVER_KNOBS->PEEK_TRACKER_EXPIRATION_TIME - now();
|
|
if(timeUntilExpiration < 1.0e-6) {
|
|
for(auto seq : it->second.sequence_version) {
|
|
if(!seq.second.isSet()) {
|
|
seq.second.sendError(timed_out());
|
|
}
|
|
}
|
|
it = self->peekTracker.erase(it);
|
|
} else {
|
|
minTimeUntilExpiration = std::min(minTimeUntilExpiration, timeUntilExpiration);
|
|
++it;
|
|
}
|
|
}
|
|
|
|
wait( delay(minTimeUntilExpiration) );
|
|
}
|
|
}
|
|
|
|
void getQueuingMetrics( TLogData* self, Reference<LogData> logData, TLogQueuingMetricsRequest const& req ) {
|
|
TLogQueuingMetricsReply reply;
|
|
reply.localTime = now();
|
|
reply.instanceID = self->instanceID;
|
|
reply.bytesInput = self->bytesInput;
|
|
reply.bytesDurable = self->bytesDurable;
|
|
reply.storageBytes = self->persistentData->getStorageBytes();
|
|
//FIXME: Add the knownCommittedVersion to this message and change ratekeeper to use that version.
|
|
reply.v = logData->durableKnownCommittedVersion;
|
|
req.reply.send( reply );
|
|
}
|
|
|
|
ACTOR Future<Void> serveTLogInterface( TLogData* self, TLogInterface tli, Reference<LogData> logData, PromiseStream<Void> warningCollectorInput ) {
|
|
state Future<Void> dbInfoChange = Void();
|
|
|
|
loop choose {
|
|
when( wait( dbInfoChange ) ) {
|
|
dbInfoChange = self->dbInfo->onChange();
|
|
bool found = false;
|
|
if(self->dbInfo->get().recoveryState >= RecoveryState::ACCEPTING_COMMITS) {
|
|
for(auto& logs : self->dbInfo->get().logSystemConfig.tLogs) {
|
|
if( std::count( logs.tLogs.begin(), logs.tLogs.end(), logData->logId ) ) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(found && self->dbInfo->get().logSystemConfig.recruitmentID == logData->recruitmentID) {
|
|
logData->logSystem->set(ILogSystem::fromServerDBInfo( self->dbgid, self->dbInfo->get() ));
|
|
if(!logData->isPrimary) {
|
|
logData->logSystem->get()->pop(logData->logRouterPoppedVersion, logData->remoteTag, logData->durableKnownCommittedVersion, logData->locality);
|
|
}
|
|
|
|
if(!logData->isPrimary && logData->stopped) {
|
|
TraceEvent("TLogAlreadyStopped", self->dbgid);
|
|
logData->removed = logData->removed && logData->logSystem->get()->endEpoch();
|
|
}
|
|
} else {
|
|
logData->logSystem->set(Reference<ILogSystem>());
|
|
}
|
|
}
|
|
when( TLogPeekRequest req = waitNext( tli.peekMessages.getFuture() ) ) {
|
|
logData->addActor.send( tLogPeekMessages( self, req, logData ) );
|
|
}
|
|
when( TLogPopRequest req = waitNext( tli.popMessages.getFuture() ) ) {
|
|
logData->addActor.send( tLogPop( self, req, logData ) );
|
|
}
|
|
when( TLogCommitRequest req = waitNext( tli.commit.getFuture() ) ) {
|
|
//TraceEvent("TLogCommitReq", logData->logId).detail("Ver", req.version).detail("PrevVer", req.prevVersion).detail("LogVer", logData->version.get());
|
|
ASSERT(logData->isPrimary);
|
|
TEST(logData->stopped); // TLogCommitRequest while stopped
|
|
if (!logData->stopped)
|
|
logData->addActor.send( tLogCommit( self, req, logData, warningCollectorInput ) );
|
|
else
|
|
req.reply.sendError( tlog_stopped() );
|
|
}
|
|
when( ReplyPromise< TLogLockResult > reply = waitNext( tli.lock.getFuture() ) ) {
|
|
logData->addActor.send( tLogLock(self, reply, logData) );
|
|
}
|
|
when (TLogQueuingMetricsRequest req = waitNext(tli.getQueuingMetrics.getFuture())) {
|
|
getQueuingMetrics(self, logData, req);
|
|
}
|
|
when (TLogConfirmRunningRequest req = waitNext(tli.confirmRunning.getFuture())){
|
|
if (req.debugID.present() ) {
|
|
UID tlogDebugID = g_nondeterministic_random->randomUniqueID();
|
|
g_traceBatch.addAttach("TransactionAttachID", req.debugID.get().first(), tlogDebugID.first());
|
|
g_traceBatch.addEvent("TransactionDebug", tlogDebugID.first(), "TLogServer.TLogConfirmRunningRequest");
|
|
}
|
|
if (!logData->stopped)
|
|
req.reply.send(Void());
|
|
else
|
|
req.reply.sendError( tlog_stopped() );
|
|
}
|
|
}
|
|
}
|
|
|
|
void removeLog( TLogData* self, Reference<LogData> logData ) {
|
|
TraceEvent("TLogRemoved", logData->logId).detail("Input", logData->bytesInput.getValue()).detail("Durable", logData->bytesDurable.getValue());
|
|
logData->stopped = true;
|
|
if(!logData->recoveryComplete.isSet()) {
|
|
logData->recoveryComplete.sendError(end_of_stream());
|
|
}
|
|
|
|
logData->addActor = PromiseStream<Future<Void>>(); //there could be items still in the promise stream if one of the actors threw an error immediately
|
|
self->id_data.erase(logData->logId);
|
|
|
|
if(self->id_data.size()) {
|
|
return;
|
|
} else {
|
|
throw worker_removed();
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> pullAsyncData( TLogData* self, Reference<LogData> logData, std::vector<Tag> tags, Version beginVersion, Optional<Version> endVersion, bool poppedIsKnownCommitted, bool parallelGetMore ) {
|
|
state Future<Void> dbInfoChange = Void();
|
|
state Reference<ILogSystem::IPeekCursor> r;
|
|
state Version tagAt = beginVersion;
|
|
state Version lastVer = 0;
|
|
|
|
while (!endVersion.present() || logData->version.get() < endVersion.get()) {
|
|
loop {
|
|
choose {
|
|
when(wait( r ? r->getMore(TaskTLogCommit) : Never() ) ) {
|
|
break;
|
|
}
|
|
when( wait( dbInfoChange ) ) {
|
|
if( logData->logSystem->get() ) {
|
|
r = logData->logSystem->get()->peek( logData->logId, tagAt, endVersion, tags, parallelGetMore );
|
|
} else {
|
|
r = Reference<ILogSystem::IPeekCursor>();
|
|
}
|
|
dbInfoChange = logData->logSystem->onChange();
|
|
}
|
|
}
|
|
}
|
|
|
|
state double waitStartT = 0;
|
|
while( self->bytesInput - self->bytesDurable >= SERVER_KNOBS->TLOG_HARD_LIMIT_BYTES && !logData->stopped ) {
|
|
if (now() - waitStartT >= 1) {
|
|
TraceEvent(SevWarn, "TLogUpdateLag", logData->logId)
|
|
.detail("Version", logData->version.get())
|
|
.detail("PersistentDataVersion", logData->persistentDataVersion)
|
|
.detail("PersistentDataDurableVersion", logData->persistentDataDurableVersion);
|
|
waitStartT = now();
|
|
}
|
|
wait( delayJittered(.005, TaskTLogCommit) );
|
|
}
|
|
|
|
state Version ver = 0;
|
|
state std::vector<TagsAndMessage> messages;
|
|
loop {
|
|
state bool foundMessage = r->hasMessage();
|
|
if (!foundMessage || r->version().version != ver) {
|
|
ASSERT(r->version().version > lastVer);
|
|
if (ver) {
|
|
if(logData->stopped || (endVersion.present() && ver > endVersion.get())) {
|
|
return Void();
|
|
}
|
|
|
|
if(poppedIsKnownCommitted) {
|
|
logData->knownCommittedVersion = std::max(logData->knownCommittedVersion, r->popped());
|
|
logData->minKnownCommittedVersion = std::max(logData->minKnownCommittedVersion, r->getMinKnownCommittedVersion());
|
|
}
|
|
|
|
commitMessages(self, logData, ver, messages);
|
|
|
|
if(self->terminated.isSet()) {
|
|
return Void();
|
|
}
|
|
|
|
// Log the changes to the persistent queue, to be committed by commitQueue()
|
|
AlternativeTLogQueueEntryRef qe;
|
|
qe.version = ver;
|
|
qe.knownCommittedVersion = logData->knownCommittedVersion;
|
|
qe.alternativeMessages = &messages;
|
|
qe.id = logData->logId;
|
|
self->persistentQueue->push( qe, logData );
|
|
|
|
self->diskQueueCommitBytes += qe.expectedSize();
|
|
if( self->diskQueueCommitBytes > SERVER_KNOBS->MAX_QUEUE_COMMIT_BYTES ) {
|
|
self->largeDiskQueueCommitBytes.set(true);
|
|
}
|
|
|
|
// Notifies the commitQueue actor to commit persistentQueue, and also unblocks tLogPeekMessages actors
|
|
logData->version.set( ver );
|
|
wait( yield(TaskTLogCommit) );
|
|
}
|
|
lastVer = ver;
|
|
ver = r->version().version;
|
|
messages.clear();
|
|
|
|
if (!foundMessage) {
|
|
ver--;
|
|
if(ver > logData->version.get()) {
|
|
if(logData->stopped || (endVersion.present() && ver > endVersion.get())) {
|
|
return Void();
|
|
}
|
|
|
|
if(poppedIsKnownCommitted) {
|
|
logData->knownCommittedVersion = std::max(logData->knownCommittedVersion, r->popped());
|
|
logData->minKnownCommittedVersion = std::max(logData->minKnownCommittedVersion, r->getMinKnownCommittedVersion());
|
|
}
|
|
|
|
if(self->terminated.isSet()) {
|
|
return Void();
|
|
}
|
|
|
|
// Log the changes to the persistent queue, to be committed by commitQueue()
|
|
TLogQueueEntryRef qe;
|
|
qe.version = ver;
|
|
qe.knownCommittedVersion = logData->knownCommittedVersion;
|
|
qe.messages = StringRef();
|
|
qe.id = logData->logId;
|
|
self->persistentQueue->push( qe, logData );
|
|
|
|
self->diskQueueCommitBytes += qe.expectedSize();
|
|
if( self->diskQueueCommitBytes > SERVER_KNOBS->MAX_QUEUE_COMMIT_BYTES ) {
|
|
self->largeDiskQueueCommitBytes.set(true);
|
|
}
|
|
|
|
// Notifies the commitQueue actor to commit persistentQueue, and also unblocks tLogPeekMessages actors
|
|
logData->version.set( ver );
|
|
wait( yield(TaskTLogCommit) );
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
messages.push_back( TagsAndMessage(r->getMessageWithTags(), r->getTags()) );
|
|
r->nextMessage();
|
|
}
|
|
|
|
tagAt = std::max( r->version().version, logData->version.get() + 1 );
|
|
}
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> tLogCore( TLogData* self, Reference<LogData> logData, TLogInterface tli, bool pulledRecoveryVersions ) {
|
|
if(logData->removed.isReady()) {
|
|
wait(delay(0)); //to avoid iterator invalidation in restorePersistentState when removed is already ready
|
|
ASSERT(logData->removed.isError());
|
|
|
|
if(logData->removed.getError().code() != error_code_worker_removed) {
|
|
throw logData->removed.getError();
|
|
}
|
|
|
|
removeLog(self, logData);
|
|
return Void();
|
|
}
|
|
|
|
state PromiseStream<Void> warningCollectorInput;
|
|
state Future<Void> warningCollector = timeoutWarningCollector( warningCollectorInput.getFuture(), 1.0, "TLogQueueCommitSlow", self->dbgid );
|
|
state Future<Void> error = actorCollection( logData->addActor.getFuture() );
|
|
|
|
logData->addActor.send( waitFailureServer( tli.waitFailure.getFuture()) );
|
|
logData->addActor.send( logData->removed );
|
|
//FIXME: update tlogMetrics to include new information, or possibly only have one copy for the shared instance
|
|
logData->addActor.send( traceCounters("TLogMetrics", logData->logId, SERVER_KNOBS->STORAGE_LOGGING_DELAY, &logData->cc, logData->logId.toString() + "/TLogMetrics"));
|
|
logData->addActor.send( serveTLogInterface(self, tli, logData, warningCollectorInput) );
|
|
|
|
if(!logData->isPrimary) {
|
|
std::vector<Tag> tags;
|
|
tags.push_back(logData->remoteTag);
|
|
logData->addActor.send( pullAsyncData(self, logData, tags, pulledRecoveryVersions ? logData->recoveredAt + 1 : logData->unrecoveredBefore, Optional<Version>(), true, false) );
|
|
}
|
|
|
|
try {
|
|
wait( error );
|
|
throw internal_error();
|
|
} catch( Error &e ) {
|
|
if( e.code() != error_code_worker_removed )
|
|
throw;
|
|
|
|
removeLog(self, logData);
|
|
return Void();
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> checkEmptyQueue(TLogData* self) {
|
|
TraceEvent("TLogCheckEmptyQueueBegin", self->dbgid);
|
|
try {
|
|
TLogQueueEntry r = wait( self->persistentQueue->readNext(self) );
|
|
throw internal_error();
|
|
} catch (Error& e) {
|
|
if (e.code() != error_code_end_of_stream) throw;
|
|
TraceEvent("TLogCheckEmptyQueueEnd", self->dbgid);
|
|
return Void();
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> checkRecovered(TLogData* self) {
|
|
TraceEvent("TLogCheckRecoveredBegin", self->dbgid);
|
|
Optional<Value> v = wait( self->persistentData->readValue(StringRef()) );
|
|
TraceEvent("TLogCheckRecoveredEnd", self->dbgid);
|
|
return Void();
|
|
}
|
|
|
|
ACTOR Future<Void> restorePersistentState( TLogData* self, LocalityData locality, Promise<Void> oldLog, Promise<Void> recovered, PromiseStream<InitializeTLogRequest> tlogRequests ) {
|
|
state double startt = now();
|
|
state Reference<LogData> logData;
|
|
state KeyRange tagKeys;
|
|
// PERSIST: Read basic state from persistentData; replay persistentQueue but don't erase it
|
|
|
|
TraceEvent("TLogRestorePersistentState", self->dbgid);
|
|
|
|
state IKeyValueStore *storage = self->persistentData;
|
|
wait(storage->init());
|
|
state Future<Optional<Value>> fFormat = storage->readValue(persistFormat.key);
|
|
state Future<Standalone<VectorRef<KeyValueRef>>> fVers = storage->readRange(persistCurrentVersionKeys);
|
|
state Future<Standalone<VectorRef<KeyValueRef>>> fKnownCommitted = storage->readRange(persistKnownCommittedVersionKeys);
|
|
state Future<Standalone<VectorRef<KeyValueRef>>> fLocality = storage->readRange(persistLocalityKeys);
|
|
state Future<Standalone<VectorRef<KeyValueRef>>> fLogRouterTags = storage->readRange(persistLogRouterTagsKeys);
|
|
state Future<Standalone<VectorRef<KeyValueRef>>> fRecoverCounts = storage->readRange(persistRecoveryCountKeys);
|
|
|
|
// FIXME: metadata in queue?
|
|
|
|
wait( waitForAll( (vector<Future<Optional<Value>>>(), fFormat ) ) );
|
|
wait( waitForAll( (vector<Future<Standalone<VectorRef<KeyValueRef>>>>(), fVers, fKnownCommitted, fLocality, fLogRouterTags, fRecoverCounts) ) );
|
|
|
|
if (fFormat.get().present() && !persistFormatReadableRange.contains( fFormat.get().get() )) {
|
|
//FIXME: remove when we no longer need to test upgrades from 4.X releases
|
|
if(g_network->isSimulated()) {
|
|
TraceEvent("ElapsedTime").detail("SimTime", now()).detail("RealTime", 0).detail("RandomUnseed", 0);
|
|
flushAndExit(0);
|
|
}
|
|
|
|
TraceEvent(SevError, "UnsupportedDBFormat", self->dbgid).detail("Format", fFormat.get().get()).detail("Expected", persistFormat.value.toString());
|
|
throw worker_recovery_failed();
|
|
}
|
|
|
|
if (!fFormat.get().present()) {
|
|
Standalone<VectorRef<KeyValueRef>> v = wait( self->persistentData->readRange( KeyRangeRef(StringRef(), LiteralStringRef("\xff")), 1 ) );
|
|
if (!v.size()) {
|
|
TEST(true); // The DB is completely empty, so it was never initialized. Delete it.
|
|
throw worker_removed();
|
|
} else {
|
|
// This should never happen
|
|
TraceEvent(SevError, "NoDBFormatKey", self->dbgid).detail("FirstKey", v[0].key);
|
|
ASSERT( false );
|
|
throw worker_recovery_failed();
|
|
}
|
|
}
|
|
|
|
state std::vector<Future<ErrorOr<Void>>> removed;
|
|
|
|
if(fFormat.get().get() == LiteralStringRef("FoundationDB/LogServer/2/3")) {
|
|
//FIXME: need for upgrades from 5.X to 6.0, remove once this upgrade path is no longer needed
|
|
if(recovered.canBeSet()) recovered.send(Void());
|
|
oldLog.send(Void());
|
|
while(!tlogRequests.isEmpty()) {
|
|
tlogRequests.getFuture().pop().reply.sendError(recruitment_failed());
|
|
}
|
|
|
|
wait( oldTLog_4_6::tLog(self->persistentData, self->rawPersistentQueue, self->dbInfo, locality, self->dbgid) );
|
|
throw internal_error();
|
|
}
|
|
|
|
ASSERT(fVers.get().size() == fRecoverCounts.get().size());
|
|
|
|
state std::map<UID, int8_t> id_locality;
|
|
for(auto it : fLocality.get()) {
|
|
id_locality[ BinaryReader::fromStringRef<UID>(it.key.removePrefix(persistLocalityKeys.begin), Unversioned())] = BinaryReader::fromStringRef<int8_t>( it.value, Unversioned() );
|
|
}
|
|
|
|
state std::map<UID, int> id_logRouterTags;
|
|
for(auto it : fLogRouterTags.get()) {
|
|
id_logRouterTags[ BinaryReader::fromStringRef<UID>(it.key.removePrefix(persistLogRouterTagsKeys.begin), Unversioned())] = BinaryReader::fromStringRef<int>( it.value, Unversioned() );
|
|
}
|
|
|
|
state std::map<UID, Version> id_knownCommitted;
|
|
for(auto it : fKnownCommitted.get()) {
|
|
id_knownCommitted[ BinaryReader::fromStringRef<UID>(it.key.removePrefix(persistKnownCommittedVersionKeys.begin), Unversioned())] = BinaryReader::fromStringRef<Version>( it.value, Unversioned() );
|
|
}
|
|
|
|
state int idx = 0;
|
|
state Promise<Void> registerWithMaster;
|
|
state std::map<UID, TLogInterface> id_interf;
|
|
for(idx = 0; idx < fVers.get().size(); idx++) {
|
|
state KeyRef rawId = fVers.get()[idx].key.removePrefix(persistCurrentVersionKeys.begin);
|
|
UID id1 = BinaryReader::fromStringRef<UID>( rawId, Unversioned() );
|
|
UID id2 = BinaryReader::fromStringRef<UID>( fRecoverCounts.get()[idx].key.removePrefix(persistRecoveryCountKeys.begin), Unversioned() );
|
|
ASSERT(id1 == id2);
|
|
|
|
TLogInterface recruited(id1, self->dbgid, locality);
|
|
recruited.initEndpoints();
|
|
|
|
DUMPTOKEN( recruited.peekMessages );
|
|
DUMPTOKEN( recruited.popMessages );
|
|
DUMPTOKEN( recruited.commit );
|
|
DUMPTOKEN( recruited.lock );
|
|
DUMPTOKEN( recruited.getQueuingMetrics );
|
|
DUMPTOKEN( recruited.confirmRunning );
|
|
|
|
//We do not need the remoteTag, because we will not be loading any additional data
|
|
logData = Reference<LogData>( new LogData(self, recruited, Tag(), true, id_logRouterTags[id1], UID(), std::vector<Tag>()) );
|
|
logData->locality = id_locality[id1];
|
|
logData->stopped = true;
|
|
self->id_data[id1] = logData;
|
|
id_interf[id1] = recruited;
|
|
|
|
logData->knownCommittedVersion = id_knownCommitted[id1];
|
|
Version ver = BinaryReader::fromStringRef<Version>( fVers.get()[idx].value, Unversioned() );
|
|
logData->persistentDataVersion = ver;
|
|
logData->persistentDataDurableVersion = ver;
|
|
logData->version.set(ver);
|
|
logData->recoveryCount = BinaryReader::fromStringRef<DBRecoveryCount>( fRecoverCounts.get()[idx].value, Unversioned() );
|
|
logData->removed = rejoinMasters(self, recruited, logData->recoveryCount, registerWithMaster.getFuture(), false);
|
|
removed.push_back(errorOr(logData->removed));
|
|
|
|
TraceEvent("TLogRestorePersistentStateVer", id1).detail("Ver", ver);
|
|
|
|
// Restore popped keys. Pop operations that took place after the last (committed) updatePersistentDataVersion might be lost, but
|
|
// that is fine because we will get the corresponding data back, too.
|
|
tagKeys = prefixRange( rawId.withPrefix(persistTagPoppedKeys.begin) );
|
|
loop {
|
|
if(logData->removed.isReady()) break;
|
|
Standalone<VectorRef<KeyValueRef>> data = wait( self->persistentData->readRange( tagKeys, BUGGIFY ? 3 : 1<<30, 1<<20 ) );
|
|
if (!data.size()) break;
|
|
((KeyRangeRef&)tagKeys) = KeyRangeRef( keyAfter(data.back().key, tagKeys.arena()), tagKeys.end );
|
|
|
|
for(auto &kv : data) {
|
|
Tag tag = decodeTagPoppedKey(rawId, kv.key);
|
|
Version popped = decodeTagPoppedValue(kv.value);
|
|
TraceEvent("TLogRestorePopped", logData->logId).detail("Tag", tag.toString()).detail("To", popped);
|
|
auto tagData = logData->getTagData(tag);
|
|
ASSERT( !tagData );
|
|
logData->createTagData(tag, popped, false, false, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
state Future<Void> allRemoved = waitForAll(removed);
|
|
state UID lastId = UID(1,1); //initialized so it will not compare equal to a default UID
|
|
state double recoverMemoryLimit = SERVER_KNOBS->TLOG_RECOVER_MEMORY_LIMIT;
|
|
if (BUGGIFY) recoverMemoryLimit = std::max<double>(SERVER_KNOBS->BUGGIFY_RECOVER_MEMORY_LIMIT, SERVER_KNOBS->TLOG_SPILL_THRESHOLD);
|
|
|
|
try {
|
|
loop {
|
|
if(allRemoved.isReady()) {
|
|
TEST(true); //all tlogs removed during queue recovery
|
|
throw worker_removed();
|
|
}
|
|
choose {
|
|
when( TLogQueueEntry qe = wait( self->persistentQueue->readNext(self) ) ) {
|
|
if(!self->queueOrder.size() || self->queueOrder.back() != qe.id) self->queueOrder.push_back(qe.id);
|
|
if(qe.id != lastId) {
|
|
lastId = qe.id;
|
|
auto it = self->id_data.find(qe.id);
|
|
if(it != self->id_data.end()) {
|
|
logData = it->second;
|
|
} else {
|
|
logData = Reference<LogData>();
|
|
}
|
|
}
|
|
|
|
//TraceEvent("TLogRecoveredQE", self->dbgid).detail("LogId", qe.id).detail("Ver", qe.version).detail("MessageBytes", qe.messages.size()).detail("Tags", qe.tags.size())
|
|
// .detail("Tag0", qe.tags.size() ? qe.tags[0].tag : invalidTag).detail("Version", logData->version.get());
|
|
|
|
if(logData) {
|
|
logData->knownCommittedVersion = std::max(logData->knownCommittedVersion, qe.knownCommittedVersion);
|
|
if( qe.version > logData->version.get() ) {
|
|
commitMessages(self, logData, qe.version, qe.arena(), qe.messages);
|
|
logData->version.set( qe.version );
|
|
logData->queueCommittedVersion.set( qe.version );
|
|
|
|
while (self->bytesInput - self->bytesDurable >= recoverMemoryLimit) {
|
|
TEST(true); // Flush excess data during TLog queue recovery
|
|
TraceEvent("FlushLargeQueueDuringRecovery", self->dbgid).detail("BytesInput", self->bytesInput).detail("BytesDurable", self->bytesDurable).detail("Version", logData->version.get()).detail("PVer", logData->persistentDataVersion);
|
|
|
|
choose {
|
|
when( wait( updateStorage(self) ) ) {}
|
|
when( wait( allRemoved ) ) { throw worker_removed(); }
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
when( wait( allRemoved ) ) { throw worker_removed(); }
|
|
}
|
|
}
|
|
} catch (Error& e) {
|
|
if (e.code() != error_code_end_of_stream) throw;
|
|
}
|
|
|
|
TraceEvent("TLogRestorePersistentStateDone", self->dbgid).detail("Took", now()-startt);
|
|
TEST( now()-startt >= 1.0 ); // TLog recovery took more than 1 second
|
|
|
|
for(auto it : self->id_data) {
|
|
if(it.second->queueCommittedVersion.get() == 0) {
|
|
TraceEvent("TLogZeroVersion", self->dbgid).detail("LogId", it.first);
|
|
it.second->queueCommittedVersion.set(it.second->version.get());
|
|
}
|
|
it.second->recoveryComplete.sendError(end_of_stream());
|
|
self->sharedActors.send( tLogCore( self, it.second, id_interf[it.first], false ) );
|
|
}
|
|
|
|
if(registerWithMaster.canBeSet()) registerWithMaster.send(Void());
|
|
return Void();
|
|
}
|
|
|
|
bool tlogTerminated( TLogData* self, IKeyValueStore* persistentData, TLogQueue* persistentQueue, Error const& e ) {
|
|
// Dispose the IKVS (destroying its data permanently) only if this shutdown is definitely permanent. Otherwise just close it.
|
|
if (e.code() == error_code_worker_removed || e.code() == error_code_recruitment_failed) {
|
|
persistentData->dispose();
|
|
persistentQueue->dispose();
|
|
} else {
|
|
persistentData->close();
|
|
persistentQueue->close();
|
|
}
|
|
|
|
if ( e.code() == error_code_worker_removed ||
|
|
e.code() == error_code_recruitment_failed ||
|
|
e.code() == error_code_file_not_found )
|
|
{
|
|
TraceEvent("TLogTerminated", self->dbgid).error(e, true);
|
|
return true;
|
|
} else
|
|
return false;
|
|
}
|
|
|
|
ACTOR Future<Void> updateLogSystem(TLogData* self, Reference<LogData> logData, LogSystemConfig recoverFrom, Reference<AsyncVar<Reference<ILogSystem>>> logSystem) {
|
|
loop {
|
|
bool found = false;
|
|
if(self->dbInfo->get().logSystemConfig.recruitmentID == logData->recruitmentID) {
|
|
if( self->dbInfo->get().logSystemConfig.isNextGenerationOf(recoverFrom) ) {
|
|
logSystem->set(ILogSystem::fromOldLogSystemConfig( logData->logId, self->dbInfo->get().myLocality, self->dbInfo->get().logSystemConfig ));
|
|
found = true;
|
|
} else if( self->dbInfo->get().logSystemConfig.isEqualIds(recoverFrom) ) {
|
|
logSystem->set(ILogSystem::fromLogSystemConfig( logData->logId, self->dbInfo->get().myLocality, self->dbInfo->get().logSystemConfig, false, true ));
|
|
found = true;
|
|
}
|
|
else if( self->dbInfo->get().recoveryState >= RecoveryState::ACCEPTING_COMMITS ) {
|
|
logSystem->set(ILogSystem::fromLogSystemConfig( logData->logId, self->dbInfo->get().myLocality, self->dbInfo->get().logSystemConfig, true ));
|
|
found = true;
|
|
}
|
|
}
|
|
if( !found ) {
|
|
logSystem->set(Reference<ILogSystem>());
|
|
} else {
|
|
logData->logSystem->get()->pop(logData->logRouterPoppedVersion, logData->remoteTag, logData->durableKnownCommittedVersion, logData->locality);
|
|
}
|
|
TraceEvent("TLogUpdate", self->dbgid).detail("LogId", logData->logId).detail("RecruitmentID", logData->recruitmentID).detail("DbRecruitmentID", self->dbInfo->get().logSystemConfig.recruitmentID).detail("RecoverFrom", recoverFrom.toString()).detail("DbInfo", self->dbInfo->get().logSystemConfig.toString()).detail("Found", found).detail("LogSystem", (bool) logSystem->get() ).detail("RecoveryState", (int)self->dbInfo->get().recoveryState);
|
|
for(auto it : self->dbInfo->get().logSystemConfig.oldTLogs) {
|
|
TraceEvent("TLogUpdateOld", self->dbgid).detail("LogId", logData->logId).detail("DbInfo", it.toString());
|
|
}
|
|
wait( self->dbInfo->onChange() );
|
|
}
|
|
}
|
|
|
|
ACTOR Future<Void> tLogStart( TLogData* self, InitializeTLogRequest req, LocalityData locality ) {
|
|
state TLogInterface recruited(self->dbgid, locality);
|
|
recruited.initEndpoints();
|
|
|
|
DUMPTOKEN( recruited.peekMessages );
|
|
DUMPTOKEN( recruited.popMessages );
|
|
DUMPTOKEN( recruited.commit );
|
|
DUMPTOKEN( recruited.lock );
|
|
DUMPTOKEN( recruited.getQueuingMetrics );
|
|
DUMPTOKEN( recruited.confirmRunning );
|
|
|
|
for(auto it : self->id_data) {
|
|
if( !it.second->stopped ) {
|
|
TraceEvent("TLogStoppedByNewRecruitment", self->dbgid).detail("StoppedId", it.first.toString()).detail("RecruitedId", recruited.id()).detail("EndEpoch", it.second->logSystem->get().getPtr() != 0);
|
|
if(!it.second->isPrimary && it.second->logSystem->get()) {
|
|
it.second->removed = it.second->removed && it.second->logSystem->get()->endEpoch();
|
|
}
|
|
if(it.second->committingQueue.canBeSet()) {
|
|
it.second->committingQueue.sendError(worker_removed());
|
|
}
|
|
}
|
|
it.second->stopped = true;
|
|
if(!it.second->recoveryComplete.isSet()) {
|
|
it.second->recoveryComplete.sendError(end_of_stream());
|
|
}
|
|
it.second->stopCommit.trigger();
|
|
}
|
|
|
|
state Reference<LogData> logData = Reference<LogData>( new LogData(self, recruited, req.remoteTag, req.isPrimary, req.logRouterTags, req.recruitmentID, req.allTags) );
|
|
self->id_data[recruited.id()] = logData;
|
|
logData->locality = req.locality;
|
|
logData->recoveryCount = req.epoch;
|
|
logData->removed = rejoinMasters(self, recruited, req.epoch, Future<Void>(Void()), req.isPrimary);
|
|
self->queueOrder.push_back(recruited.id());
|
|
|
|
TraceEvent("TLogStart", logData->logId);
|
|
state Future<Void> updater;
|
|
state bool pulledRecoveryVersions = false;
|
|
try {
|
|
if( logData->removed.isReady() ) {
|
|
throw logData->removed.getError();
|
|
}
|
|
|
|
if (req.recoverFrom.logSystemType == 2) {
|
|
logData->unrecoveredBefore = req.startVersion;
|
|
logData->recoveredAt = req.recoverAt;
|
|
logData->knownCommittedVersion = req.startVersion - 1;
|
|
logData->persistentDataVersion = logData->unrecoveredBefore - 1;
|
|
logData->persistentDataDurableVersion = logData->unrecoveredBefore - 1;
|
|
logData->queueCommittedVersion.set( logData->unrecoveredBefore - 1 );
|
|
logData->version.set( logData->unrecoveredBefore - 1 );
|
|
|
|
logData->unpoppedRecoveredTags = req.allTags.size();
|
|
wait( initPersistentState( self, logData ) || logData->removed );
|
|
|
|
TraceEvent("TLogRecover", self->dbgid).detail("LogId", logData->logId).detail("At", req.recoverAt).detail("Known", req.knownCommittedVersion).detail("Unrecovered", logData->unrecoveredBefore).detail("Tags", describe(req.recoverTags)).detail("Locality", req.locality).detail("LogRouterTags", logData->logRouterTags);
|
|
|
|
if(logData->recoveryComplete.isSet()) {
|
|
throw worker_removed();
|
|
}
|
|
|
|
updater = updateLogSystem(self, logData, req.recoverFrom, logData->logSystem);
|
|
|
|
logData->initialized = true;
|
|
self->newLogData.trigger();
|
|
|
|
if((req.isPrimary || req.recoverFrom.logRouterTags == 0) && !logData->stopped && logData->unrecoveredBefore <= req.recoverAt) {
|
|
if(req.recoverFrom.logRouterTags > 0 && req.locality != tagLocalitySatellite) {
|
|
logData->logRouterPopToVersion = req.recoverAt;
|
|
std::vector<Tag> tags;
|
|
tags.push_back(logData->remoteTag);
|
|
wait(pullAsyncData(self, logData, tags, logData->unrecoveredBefore, req.recoverAt, true, false) || logData->removed);
|
|
} else if(!req.recoverTags.empty()) {
|
|
ASSERT(logData->unrecoveredBefore > req.knownCommittedVersion);
|
|
wait(pullAsyncData(self, logData, req.recoverTags, req.knownCommittedVersion + 1, req.recoverAt, false, true) || logData->removed);
|
|
}
|
|
pulledRecoveryVersions = true;
|
|
logData->knownCommittedVersion = req.recoverAt;
|
|
}
|
|
|
|
if((req.isPrimary || req.recoverFrom.logRouterTags == 0) && logData->version.get() < req.recoverAt && !logData->stopped) {
|
|
// Log the changes to the persistent queue, to be committed by commitQueue()
|
|
TLogQueueEntryRef qe;
|
|
qe.version = req.recoverAt;
|
|
qe.knownCommittedVersion = logData->knownCommittedVersion;
|
|
qe.messages = StringRef();
|
|
qe.id = logData->logId;
|
|
self->persistentQueue->push( qe, logData );
|
|
|
|
self->diskQueueCommitBytes += qe.expectedSize();
|
|
if( self->diskQueueCommitBytes > SERVER_KNOBS->MAX_QUEUE_COMMIT_BYTES ) {
|
|
self->largeDiskQueueCommitBytes.set(true);
|
|
}
|
|
|
|
logData->version.set( req.recoverAt );
|
|
}
|
|
|
|
if(logData->recoveryComplete.isSet()) {
|
|
throw worker_removed();
|
|
}
|
|
|
|
logData->addActor.send( respondToRecovered( recruited, logData->recoveryComplete ) );
|
|
} else {
|
|
// Brand new tlog, initialization has already been done by caller
|
|
wait( initPersistentState( self, logData ) || logData->removed );
|
|
|
|
if(logData->recoveryComplete.isSet()) {
|
|
throw worker_removed();
|
|
}
|
|
|
|
logData->initialized = true;
|
|
self->newLogData.trigger();
|
|
|
|
logData->recoveryComplete.send(Void());
|
|
}
|
|
wait(logData->committingQueue.getFuture() || logData->removed );
|
|
} catch( Error &e ) {
|
|
if(e.code() != error_code_actor_cancelled) {
|
|
req.reply.sendError(e);
|
|
}
|
|
|
|
if( e.code() != error_code_worker_removed ) {
|
|
throw;
|
|
}
|
|
|
|
wait( delay(0.0) ); // if multiple recruitment requests were already in the promise stream make sure they are all started before any are removed
|
|
|
|
removeLog(self, logData);
|
|
return Void();
|
|
}
|
|
|
|
req.reply.send( recruited );
|
|
|
|
TraceEvent("TLogReady", logData->logId).detail("AllTags", describe(req.allTags)).detail("Locality", logData->locality);
|
|
|
|
updater = Void();
|
|
wait( tLogCore( self, logData, recruited, pulledRecoveryVersions ) );
|
|
return Void();
|
|
}
|
|
|
|
// New tLog (if !recoverFrom.size()) or restore from network
|
|
ACTOR Future<Void> tLog( IKeyValueStore* persistentData, IDiskQueue* persistentQueue, Reference<AsyncVar<ServerDBInfo>> db, LocalityData locality, PromiseStream<InitializeTLogRequest> tlogRequests, UID tlogId, bool restoreFromDisk, Promise<Void> oldLog, Promise<Void> recovered, Reference<AsyncVar<bool>> degraded) {
|
|
state TLogData self( tlogId, persistentData, persistentQueue, db, degraded );
|
|
state Future<Void> error = actorCollection( self.sharedActors.getFuture() );
|
|
|
|
TraceEvent("SharedTlog", tlogId);
|
|
// FIXME: Pass the worker id instead of stubbing it
|
|
startRole(Role::SHARED_TRANSACTION_LOG, tlogId, UID());
|
|
try {
|
|
if(restoreFromDisk) {
|
|
wait( restorePersistentState( &self, locality, oldLog, recovered, tlogRequests ) );
|
|
} else {
|
|
wait( checkEmptyQueue(&self) && checkRecovered(&self) );
|
|
}
|
|
|
|
//Disk errors need a chance to kill this actor.
|
|
wait(delay(0.000001));
|
|
|
|
if(recovered.canBeSet()) recovered.send(Void());
|
|
|
|
self.sharedActors.send( cleanupPeekTrackers(&self) );
|
|
self.sharedActors.send( commitQueue(&self) );
|
|
self.sharedActors.send( updateStorageLoop(&self) );
|
|
|
|
loop {
|
|
choose {
|
|
when ( InitializeTLogRequest req = waitNext(tlogRequests.getFuture() ) ) {
|
|
if( !self.tlogCache.exists( req.recruitmentID ) ) {
|
|
self.tlogCache.set( req.recruitmentID, req.reply.getFuture() );
|
|
self.sharedActors.send( self.tlogCache.removeOnReady( req.recruitmentID, tLogStart( &self, req, locality ) ) );
|
|
} else {
|
|
forwardPromise( req.reply, self.tlogCache.get( req.recruitmentID ) );
|
|
}
|
|
}
|
|
when ( wait( error ) ) { throw internal_error(); }
|
|
}
|
|
}
|
|
} catch (Error& e) {
|
|
self.terminated.send(Void());
|
|
TraceEvent("TLogError", tlogId).error(e, true);
|
|
endRole(Role::SHARED_TRANSACTION_LOG, tlogId, "Error", true);
|
|
if(recovered.canBeSet()) recovered.send(Void());
|
|
|
|
while(!tlogRequests.isEmpty()) {
|
|
tlogRequests.getFuture().pop().reply.sendError(recruitment_failed());
|
|
}
|
|
|
|
for( auto& it : self.id_data ) {
|
|
if(!it.second->recoveryComplete.isSet()) {
|
|
it.second->recoveryComplete.sendError(end_of_stream());
|
|
}
|
|
}
|
|
|
|
if (tlogTerminated( &self, persistentData, self.persistentQueue, e )) {
|
|
return Void();
|
|
} else {
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
// UNIT TESTS
|
|
struct DequeAllocatorStats {
|
|
static int64_t allocatedBytes;
|
|
};
|
|
|
|
int64_t DequeAllocatorStats::allocatedBytes = 0;
|
|
|
|
template <class T>
|
|
struct DequeAllocator : std::allocator<T> {
|
|
template<typename U>
|
|
struct rebind {
|
|
typedef DequeAllocator<U> other;
|
|
};
|
|
|
|
DequeAllocator() {}
|
|
|
|
template<typename U>
|
|
DequeAllocator(DequeAllocator<U> const& u) : std::allocator<T>(u) {}
|
|
|
|
T* allocate(std::size_t n, std::allocator<void>::const_pointer hint = 0) {
|
|
DequeAllocatorStats::allocatedBytes += n * sizeof(T);
|
|
//fprintf(stderr, "Allocating %lld objects for %lld bytes (total allocated: %lld)\n", n, n * sizeof(T), DequeAllocatorStats::allocatedBytes);
|
|
return std::allocator<T>::allocate(n, hint);
|
|
}
|
|
void deallocate(T* p, std::size_t n) {
|
|
DequeAllocatorStats::allocatedBytes -= n * sizeof(T);
|
|
//fprintf(stderr, "Deallocating %lld objects for %lld bytes (total allocated: %lld)\n", n, n * sizeof(T), DequeAllocatorStats::allocatedBytes);
|
|
return std::allocator<T>::deallocate(p, n);
|
|
}
|
|
};
|
|
|
|
TEST_CASE("/fdbserver/tlogserver/VersionMessagesOverheadFactor" ) {
|
|
|
|
typedef std::pair<Version, LengthPrefixedStringRef> TestType; // type used by versionMessages
|
|
|
|
for(int i = 1; i < 9; ++i) {
|
|
for(int j = 0; j < 20; ++j) {
|
|
DequeAllocatorStats::allocatedBytes = 0;
|
|
DequeAllocator<TestType> allocator;
|
|
std::deque<TestType, DequeAllocator<TestType>> d(allocator);
|
|
|
|
int numElements = g_random->randomInt(pow(10, i-1), pow(10, i));
|
|
for(int k = 0; k < numElements; ++k) {
|
|
d.push_back(TestType());
|
|
}
|
|
|
|
int removedElements = 0;//g_random->randomInt(0, numElements); // FIXME: the overhead factor does not accurately account for removal!
|
|
for(int k = 0; k < removedElements; ++k) {
|
|
d.pop_front();
|
|
}
|
|
|
|
int64_t dequeBytes = DequeAllocatorStats::allocatedBytes + sizeof(std::deque<TestType>);
|
|
int64_t insertedBytes = (numElements-removedElements) * sizeof(TestType);
|
|
double overheadFactor = std::max<double>(insertedBytes, dequeBytes-10000) / insertedBytes; // We subtract 10K here as an estimated upper bound for the fixed cost of an std::deque
|
|
//fprintf(stderr, "%d elements (%d inserted, %d removed):\n", numElements-removedElements, numElements, removedElements);
|
|
//fprintf(stderr, "Allocated %lld bytes to store %lld bytes (%lf overhead factor)\n", dequeBytes, insertedBytes, overheadFactor);
|
|
ASSERT(overheadFactor * 1024 <= SERVER_KNOBS->VERSION_MESSAGES_OVERHEAD_FACTOR_1024THS);
|
|
}
|
|
}
|
|
|
|
return Void();
|
|
}
|
|
|
|
} // namespace oldTLog_6_0
|