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/*
* TagPartitionedLogSystem.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fdbserver/TagPartitionedLogSystem.actor.h"
#include "flow/actorcompiler.h" // This must be the last #include.
ACTOR Future<Version> minVersionWhenReady(Future<Void> f, std::vector<Future<TLogCommitReply>> replies) {
wait(f);
Version minVersion = std::numeric_limits<Version>::max();
for (auto& reply : replies) {
if (reply.isReady() && !reply.isError()) {
minVersion = std::min(minVersion, reply.get().version);
}
}
return minVersion;
}
LogSet::LogSet(const TLogSet& tLogSet)
: tLogWriteAntiQuorum(tLogSet.tLogWriteAntiQuorum), tLogReplicationFactor(tLogSet.tLogReplicationFactor),
tLogLocalities(tLogSet.tLogLocalities), tLogVersion(tLogSet.tLogVersion), tLogPolicy(tLogSet.tLogPolicy),
isLocal(tLogSet.isLocal), locality(tLogSet.locality), startVersion(tLogSet.startVersion),
satelliteTagLocations(tLogSet.satelliteTagLocations) {
for (const auto& log : tLogSet.tLogs) {
logServers.push_back(makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(log));
}
for (const auto& log : tLogSet.logRouters) {
logRouters.push_back(makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(log));
}
for (const auto& log : tLogSet.backupWorkers) {
backupWorkers.push_back(makeReference<AsyncVar<OptionalInterface<BackupInterface>>>(log));
}
filterLocalityDataForPolicy(tLogPolicy, &tLogLocalities);
updateLocalitySet(tLogLocalities);
}
LogSet::LogSet(const CoreTLogSet& coreSet)
: tLogWriteAntiQuorum(coreSet.tLogWriteAntiQuorum), tLogReplicationFactor(coreSet.tLogReplicationFactor),
tLogLocalities(coreSet.tLogLocalities), tLogVersion(coreSet.tLogVersion), tLogPolicy(coreSet.tLogPolicy),
isLocal(coreSet.isLocal), locality(coreSet.locality), startVersion(coreSet.startVersion),
satelliteTagLocations(coreSet.satelliteTagLocations) {
for (const auto& log : coreSet.tLogs) {
logServers.push_back(
makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(OptionalInterface<TLogInterface>(log)));
}
// Do NOT recover coreSet.backupWorkers, because master will recruit new ones.
filterLocalityDataForPolicy(tLogPolicy, &tLogLocalities);
updateLocalitySet(tLogLocalities);
}
TLogSet::TLogSet(const LogSet& rhs)
: tLogWriteAntiQuorum(rhs.tLogWriteAntiQuorum), tLogReplicationFactor(rhs.tLogReplicationFactor),
tLogLocalities(rhs.tLogLocalities), tLogVersion(rhs.tLogVersion), tLogPolicy(rhs.tLogPolicy), isLocal(rhs.isLocal),
locality(rhs.locality), startVersion(rhs.startVersion), satelliteTagLocations(rhs.satelliteTagLocations) {
for (const auto& tlog : rhs.logServers) {
tLogs.push_back(tlog->get());
}
for (const auto& logRouter : rhs.logRouters) {
logRouters.push_back(logRouter->get());
}
for (const auto& worker : rhs.backupWorkers) {
backupWorkers.push_back(worker->get());
}
}
OldTLogConf::OldTLogConf(const OldLogData& oldLogData)
: epochBegin(oldLogData.epochBegin), epochEnd(oldLogData.epochEnd), logRouterTags(oldLogData.logRouterTags),
txsTags(oldLogData.txsTags), pseudoLocalities(oldLogData.pseudoLocalities), epoch(oldLogData.epoch) {
for (const Reference<LogSet>& logSet : oldLogData.tLogs) {
tLogs.emplace_back(*logSet);
}
}
CoreTLogSet::CoreTLogSet(const LogSet& logset)
: tLogWriteAntiQuorum(logset.tLogWriteAntiQuorum), tLogReplicationFactor(logset.tLogReplicationFactor),
tLogLocalities(logset.tLogLocalities), tLogPolicy(logset.tLogPolicy), isLocal(logset.isLocal),
locality(logset.locality), startVersion(logset.startVersion), satelliteTagLocations(logset.satelliteTagLocations),
tLogVersion(logset.tLogVersion) {
for (const auto& log : logset.logServers) {
tLogs.push_back(log->get().id());
}
// Do NOT store logset.backupWorkers, because master will recruit new ones.
}
OldTLogCoreData::OldTLogCoreData(const OldLogData& oldData)
: logRouterTags(oldData.logRouterTags), txsTags(oldData.txsTags), epochBegin(oldData.epochBegin),
epochEnd(oldData.epochEnd), pseudoLocalities(oldData.pseudoLocalities), epoch(oldData.epoch) {
for (const Reference<LogSet>& logSet : oldData.tLogs) {
if (logSet->logServers.size()) {
tLogs.emplace_back(*logSet);
}
}
}
Future<Void> ILogSystem::recoverAndEndEpoch(Reference<AsyncVar<Reference<ILogSystem>>> const& outLogSystem,
UID const& dbgid,
DBCoreState const& oldState,
FutureStream<TLogRejoinRequest> const& rejoins,
LocalityData const& locality,
bool* forceRecovery) {
return TagPartitionedLogSystem::recoverAndEndEpoch(outLogSystem, dbgid, oldState, rejoins, locality, forceRecovery);
}
Reference<ILogSystem> ILogSystem::fromLogSystemConfig(UID const& dbgid,
struct LocalityData const& locality,
struct LogSystemConfig const& conf,
bool excludeRemote,
bool useRecoveredAt,
Optional<PromiseStream<Future<Void>>> addActor) {
if (conf.logSystemType == LogSystemType::empty)
return Reference<ILogSystem>();
else if (conf.logSystemType == LogSystemType::tagPartitioned)
return TagPartitionedLogSystem::fromLogSystemConfig(
dbgid, locality, conf, excludeRemote, useRecoveredAt, addActor);
else
throw internal_error();
}
Reference<ILogSystem> ILogSystem::fromOldLogSystemConfig(UID const& dbgid,
struct LocalityData const& locality,
struct LogSystemConfig const& conf) {
if (conf.logSystemType == LogSystemType::empty)
return Reference<ILogSystem>();
else if (conf.logSystemType == LogSystemType::tagPartitioned)
return TagPartitionedLogSystem::fromOldLogSystemConfig(dbgid, locality, conf);
else
throw internal_error();
}
Reference<ILogSystem> ILogSystem::fromServerDBInfo(UID const& dbgid,
ServerDBInfo const& dbInfo,
bool useRecoveredAt,
Optional<PromiseStream<Future<Void>>> addActor) {
return fromLogSystemConfig(dbgid, dbInfo.myLocality, dbInfo.logSystemConfig, false, useRecoveredAt, addActor);
}
void TagPartitionedLogSystem::stopRejoins() {
rejoins = Future<Void>();
}
void TagPartitionedLogSystem::addref() {
ReferenceCounted<TagPartitionedLogSystem>::addref();
}
void TagPartitionedLogSystem::delref() {
ReferenceCounted<TagPartitionedLogSystem>::delref();
}
std::string TagPartitionedLogSystem::describe() const {
std::string result;
for (int i = 0; i < tLogs.size(); i++) {
result += format("%d: ", i);
for (int j = 0; j < tLogs[i]->logServers.size(); j++) {
result +=
tLogs[i]->logServers[j]->get().id().toString() + ((j == tLogs[i]->logServers.size() - 1) ? " " : ", ");
}
}
return result;
}
UID TagPartitionedLogSystem::getDebugID() const {
return dbgid;
}
void TagPartitionedLogSystem::addPseudoLocality(int8_t locality) {
ASSERT(locality < 0);
pseudoLocalities.insert(locality);
for (uint16_t i = 0; i < logRouterTags; i++) {
pseudoLocalityPopVersion[Tag(locality, i)] = 0;
}
}
Tag TagPartitionedLogSystem::getPseudoPopTag(Tag tag, ProcessClass::ClassType type) const {
switch (type) {
case ProcessClass::LogRouterClass:
if (tag.locality == tagLocalityLogRouter) {
ASSERT(pseudoLocalities.count(tagLocalityLogRouterMapped) > 0);
tag.locality = tagLocalityLogRouterMapped;
}
break;
case ProcessClass::BackupClass:
if (tag.locality == tagLocalityLogRouter) {
ASSERT(pseudoLocalities.count(tagLocalityBackup) > 0);
tag.locality = tagLocalityBackup;
}
break;
default: // This should be an error at caller site.
break;
}
return tag;
}
bool TagPartitionedLogSystem::hasPseudoLocality(int8_t locality) const {
return pseudoLocalities.count(locality) > 0;
}
Version TagPartitionedLogSystem::popPseudoLocalityTag(Tag tag, Version upTo) {
ASSERT(isPseudoLocality(tag.locality) && hasPseudoLocality(tag.locality));
Version& localityVersion = pseudoLocalityPopVersion[tag];
localityVersion = std::max(localityVersion, upTo);
Version minVersion = localityVersion;
// Why do we need to use the minimum popped version among all tags? Reason: for example,
// 2 pseudo tags pop 100 or 150, respectively. It's only safe to pop min(100, 150),
// because [101,150) is needed by another pseudo tag.
for (const int8_t locality : pseudoLocalities) {
minVersion = std::min(minVersion, pseudoLocalityPopVersion[Tag(locality, tag.id)]);
}
// TraceEvent("TLogPopPseudoTag", dbgid).detail("Tag", tag.toString()).detail("Version", upTo).detail("PopVersion", minVersion);
return minVersion;
}
Future<Void> TagPartitionedLogSystem::recoverAndEndEpoch(Reference<AsyncVar<Reference<ILogSystem>>> const& outLogSystem,
UID const& dbgid,
DBCoreState const& oldState,
FutureStream<TLogRejoinRequest> const& rejoins,
LocalityData const& locality,
bool* forceRecovery) {
return epochEnd(outLogSystem, dbgid, oldState, rejoins, locality, forceRecovery);
}
Reference<ILogSystem> TagPartitionedLogSystem::fromLogSystemConfig(UID const& dbgid,
LocalityData const& locality,
LogSystemConfig const& lsConf,
bool excludeRemote,
bool useRecoveredAt,
Optional<PromiseStream<Future<Void>>> addActor) {
ASSERT(lsConf.logSystemType == LogSystemType::tagPartitioned ||
(lsConf.logSystemType == LogSystemType::empty && !lsConf.tLogs.size()));
// ASSERT(lsConf.epoch == epoch); //< FIXME
auto logSystem = makeReference<TagPartitionedLogSystem>(dbgid, locality, lsConf.epoch, addActor);
logSystem->tLogs.reserve(lsConf.tLogs.size());
logSystem->expectedLogSets = lsConf.expectedLogSets;
logSystem->logRouterTags = lsConf.logRouterTags;
logSystem->txsTags = lsConf.txsTags;
logSystem->recruitmentID = lsConf.recruitmentID;
logSystem->stopped = lsConf.stopped;
if (useRecoveredAt) {
logSystem->recoveredAt = lsConf.recoveredAt;
}
logSystem->pseudoLocalities = lsConf.pseudoLocalities;
for (const TLogSet& tLogSet : lsConf.tLogs) {
if (!excludeRemote || tLogSet.isLocal) {
logSystem->tLogs.push_back(makeReference<LogSet>(tLogSet));
}
}
for (const auto& oldTlogConf : lsConf.oldTLogs) {
logSystem->oldLogData.emplace_back(oldTlogConf);
//TraceEvent("BWFromLSConf")
// .detail("Epoch", logSystem->oldLogData.back().epoch)
// .detail("Version", logSystem->oldLogData.back().epochEnd);
}
logSystem->logSystemType = lsConf.logSystemType;
logSystem->oldestBackupEpoch = lsConf.oldestBackupEpoch;
return logSystem;
}
Reference<ILogSystem> TagPartitionedLogSystem::fromOldLogSystemConfig(UID const& dbgid,
LocalityData const& locality,
LogSystemConfig const& lsConf) {
ASSERT(lsConf.logSystemType == LogSystemType::tagPartitioned ||
(lsConf.logSystemType == LogSystemType::empty && !lsConf.tLogs.size()));
// ASSERT(lsConf.epoch == epoch); //< FIXME
const LogEpoch e = lsConf.oldTLogs.size() > 0 ? lsConf.oldTLogs[0].epoch : 0;
auto logSystem = makeReference<TagPartitionedLogSystem>(dbgid, locality, e);
if (lsConf.oldTLogs.size()) {
for (const TLogSet& tLogSet : lsConf.oldTLogs[0].tLogs) {
logSystem->tLogs.push_back(makeReference<LogSet>(tLogSet));
}
logSystem->logRouterTags = lsConf.oldTLogs[0].logRouterTags;
logSystem->txsTags = lsConf.oldTLogs[0].txsTags;
// logSystem->epochEnd = lsConf.oldTLogs[0].epochEnd;
for (int i = 1; i < lsConf.oldTLogs.size(); i++) {
logSystem->oldLogData.emplace_back(lsConf.oldTLogs[i]);
}
}
logSystem->logSystemType = lsConf.logSystemType;
logSystem->stopped = true;
logSystem->pseudoLocalities = lsConf.pseudoLocalities;
return logSystem;
}
void TagPartitionedLogSystem::toCoreState(DBCoreState& newState) {
if (recoveryComplete.isValid() && recoveryComplete.isError())
throw recoveryComplete.getError();
if (remoteRecoveryComplete.isValid() && remoteRecoveryComplete.isError())
throw remoteRecoveryComplete.getError();
newState.tLogs.clear();
newState.logRouterTags = logRouterTags;
newState.txsTags = txsTags;
newState.pseudoLocalities = pseudoLocalities;
for (const auto& t : tLogs) {
if (t->logServers.size()) {
newState.tLogs.emplace_back(*t);
newState.tLogs.back().tLogLocalities.clear();
for (const auto& log : t->logServers) {
newState.tLogs.back().tLogLocalities.push_back(log->get().interf().filteredLocality);
}
}
}
newState.oldTLogData.clear();
if (!recoveryComplete.isValid() || !recoveryComplete.isReady() ||
(repopulateRegionAntiQuorum == 0 && (!remoteRecoveryComplete.isValid() || !remoteRecoveryComplete.isReady())) ||
epoch != oldestBackupEpoch) {
for (const auto& oldData : oldLogData) {
newState.oldTLogData.emplace_back(oldData);
TraceEvent("BWToCore")
.detail("Epoch", newState.oldTLogData.back().epoch)
.detail("TotalTags", newState.oldTLogData.back().logRouterTags)
.detail("BeginVersion", newState.oldTLogData.back().epochBegin)
.detail("EndVersion", newState.oldTLogData.back().epochEnd);
}
}
newState.logSystemType = logSystemType;
}
bool TagPartitionedLogSystem::remoteStorageRecovered() {
return remoteRecoveryComplete.isValid() && remoteRecoveryComplete.isReady();
}
Future<Void> TagPartitionedLogSystem::onCoreStateChanged() {
std::vector<Future<Void>> changes;
changes.push_back(Never());
if (recoveryComplete.isValid() && !recoveryComplete.isReady()) {
changes.push_back(recoveryComplete);
}
if (remoteRecovery.isValid() && !remoteRecovery.isReady()) {
changes.push_back(remoteRecovery);
}
if (remoteRecoveryComplete.isValid() && !remoteRecoveryComplete.isReady()) {
changes.push_back(remoteRecoveryComplete);
}
changes.push_back(backupWorkerChanged.onTrigger()); // changes to oldestBackupEpoch
return waitForAny(changes);
}
void TagPartitionedLogSystem::coreStateWritten(DBCoreState const& newState) {
if (!newState.oldTLogData.size()) {
recoveryCompleteWrittenToCoreState.set(true);
}
for (auto& t : newState.tLogs) {
if (!t.isLocal) {
TraceEvent("RemoteLogsWritten", dbgid).log();
remoteLogsWrittenToCoreState = true;
break;
}
}
}
Future<Void> TagPartitionedLogSystem::onError() {
return onError_internal(this);
}
ACTOR Future<Void> TagPartitionedLogSystem::onError_internal(TagPartitionedLogSystem* self) {
// Never returns normally, but throws an error if the subsystem stops working
loop {
std::vector<Future<Void>> failed;
std::vector<Future<Void>> backupFailed(1, Never());
std::vector<Future<Void>> changes;
for (auto& it : self->tLogs) {
for (auto& t : it->logServers) {
if (t->get().present()) {
failed.push_back(
waitFailureClient(t->get().interf().waitFailure,
SERVER_KNOBS->TLOG_TIMEOUT,
-SERVER_KNOBS->TLOG_TIMEOUT / SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
} else {
changes.push_back(t->onChange());
}
}
for (auto& t : it->logRouters) {
if (t->get().present()) {
failed.push_back(
waitFailureClient(t->get().interf().waitFailure,
SERVER_KNOBS->TLOG_TIMEOUT,
-SERVER_KNOBS->TLOG_TIMEOUT / SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
} else {
changes.push_back(t->onChange());
}
}
for (const auto& worker : it->backupWorkers) {
if (worker->get().present()) {
backupFailed.push_back(
waitFailureClient(worker->get().interf().waitFailure,
SERVER_KNOBS->BACKUP_TIMEOUT,
-SERVER_KNOBS->BACKUP_TIMEOUT / SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
} else {
changes.push_back(worker->onChange());
}
}
}
if (!self->recoveryCompleteWrittenToCoreState.get()) {
for (auto& old : self->oldLogData) {
for (auto& it : old.tLogs) {
for (auto& t : it->logRouters) {
if (t->get().present()) {
failed.push_back(waitFailureClient(t->get().interf().waitFailure,
SERVER_KNOBS->TLOG_TIMEOUT,
-SERVER_KNOBS->TLOG_TIMEOUT /
SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
} else {
changes.push_back(t->onChange());
}
}
}
// Monitor changes of backup workers for old epochs.
for (const auto& worker : old.tLogs[0]->backupWorkers) {
if (worker->get().present()) {
backupFailed.push_back(waitFailureClient(worker->get().interf().waitFailure,
SERVER_KNOBS->BACKUP_TIMEOUT,
-SERVER_KNOBS->BACKUP_TIMEOUT /
SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
} else {
changes.push_back(worker->onChange());
}
}
}
}
if (self->hasRemoteServers && (!self->remoteRecovery.isReady() || self->remoteRecovery.isError())) {
changes.push_back(self->remoteRecovery);
}
changes.push_back(self->recoveryCompleteWrittenToCoreState.onChange());
changes.push_back(self->backupWorkerChanged.onTrigger());
ASSERT(failed.size() >= 1);
wait(quorum(changes, 1) || tagError<Void>(quorum(failed, 1), tlog_failed()) ||
tagError<Void>(quorum(backupFailed, 1), backup_worker_failed()));
}
}
ACTOR Future<Void> TagPartitionedLogSystem::pushResetChecker(Reference<ConnectionResetInfo> self, NetworkAddress addr) {
self->slowReplies = 0;
self->fastReplies = 0;
wait(delay(SERVER_KNOBS->PUSH_STATS_INTERVAL));
TraceEvent("SlowPushStats")
.detail("PeerAddress", addr)
.detail("SlowReplies", self->slowReplies)
.detail("FastReplies", self->fastReplies);
if (self->slowReplies >= SERVER_KNOBS->PUSH_STATS_SLOW_AMOUNT &&
self->slowReplies / double(self->slowReplies + self->fastReplies) >= SERVER_KNOBS->PUSH_STATS_SLOW_RATIO) {
FlowTransport::transport().resetConnection(addr);
self->lastReset = now();
}
return Void();
}
ACTOR Future<TLogCommitReply> TagPartitionedLogSystem::recordPushMetrics(Reference<ConnectionResetInfo> self,
Reference<Histogram> dist,
NetworkAddress addr,
Future<TLogCommitReply> in) {
state double startTime = now();
TLogCommitReply t = wait(in);
if (now() - self->lastReset > SERVER_KNOBS->PUSH_RESET_INTERVAL) {
if (now() - startTime > SERVER_KNOBS->PUSH_MAX_LATENCY) {
if (self->resetCheck.isReady()) {
self->resetCheck = TagPartitionedLogSystem::pushResetChecker(self, addr);
}
self->slowReplies++;
} else {
self->fastReplies++;
}
}
dist->sampleSeconds(now() - startTime);
return t;
}
Future<Version> TagPartitionedLogSystem::push(Version prevVersion,
Version version,
Version knownCommittedVersion,
Version minKnownCommittedVersion,
LogPushData& data,
SpanID const& spanContext,
Optional<UID> debugID,
Optional<std::unordered_map<uint16_t, Version>> tpcvMap) {
// FIXME: Randomize request order as in LegacyLogSystem?
std::vector<Future<Void>> quorumResults;
std::vector<Future<TLogCommitReply>> allReplies;
int location = 0;
Span span("TPLS:push"_loc, spanContext);
std::unordered_map<int, int> tLogCount;
if (SERVER_KNOBS->ENABLE_VERSION_VECTOR_TLOG_UNICAST) {
int location = 0;
int logGroupLocal = 0;
for (auto& it : tLogs) {
if (!it->isLocal) {
continue;
}
for (int loc = 0; loc < it->logServers.size(); loc++) {
if (tpcvMap.get().find(location) != tpcvMap.get().end()) {
tLogCount[logGroupLocal]++;
}
location++;
}
logGroupLocal++;
}
}
int logGroupLocal = 0;
for (auto& it : tLogs) {
if (it->isLocal && it->logServers.size()) {
if (it->connectionResetTrackers.size() == 0) {
for (int i = 0; i < it->logServers.size(); i++) {
it->connectionResetTrackers.push_back(makeReference<ConnectionResetInfo>());
}
}
if (it->tlogPushDistTrackers.empty()) {
for (int i = 0; i < it->logServers.size(); i++) {
it->tlogPushDistTrackers.push_back(
Histogram::getHistogram("ToTlog_" + it->logServers[i]->get().interf().uniqueID.toString(),
it->logServers[i]->get().interf().address().toString(),
Histogram::Unit::microseconds));
}
}
std::vector<Future<Void>> tLogCommitResults;
for (int loc = 0; loc < it->logServers.size(); loc++) {
if (SERVER_KNOBS->ENABLE_VERSION_VECTOR_TLOG_UNICAST) {
if (tpcvMap.get().find(location) != tpcvMap.get().end()) {
prevVersion = tpcvMap.get()[location];
} else {
location++;
continue;
}
}
Standalone<StringRef> msg = data.getMessages(location);
data.recordEmptyMessage(location, msg);
allReplies.push_back(recordPushMetrics(
it->connectionResetTrackers[loc],
it->tlogPushDistTrackers[loc],
it->logServers[loc]->get().interf().address(),
it->logServers[loc]->get().interf().commit.getReply(TLogCommitRequest(spanContext,
msg.arena(),
prevVersion,
version,
knownCommittedVersion,
minKnownCommittedVersion,
msg,
tLogCount[logGroupLocal],
debugID),
TaskPriority::ProxyTLogCommitReply)));
Future<Void> commitSuccess = success(allReplies.back());
addActor.get().send(commitSuccess);
tLogCommitResults.push_back(commitSuccess);
location++;
}
quorumResults.push_back(quorum(tLogCommitResults, tLogCommitResults.size() - it->tLogWriteAntiQuorum));
logGroupLocal++;
}
}
return minVersionWhenReady(waitForAll(quorumResults), allReplies);
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peekAll(UID dbgid,
Version begin,
Version end,
Tag tag,
bool parallelGetMore) {
int bestSet = 0;
std::vector<Reference<LogSet>> localSets;
Version lastBegin = 0;
bool foundSpecial = false;
for (auto& log : tLogs) {
if (log->locality == tagLocalitySpecial || log->locality == tagLocalityUpgraded) {
foundSpecial = true;
}
if (log->isLocal && log->logServers.size() &&
(log->locality == tagLocalitySpecial || log->locality == tagLocalityUpgraded ||
log->locality == tag.locality || tag == txsTag || tag.locality == tagLocalityTxs ||
tag.locality == tagLocalityLogRouter ||
((tag.locality == tagLocalityUpgraded || tag == cacheTag) && log->locality != tagLocalitySatellite))) {
lastBegin = std::max(lastBegin, log->startVersion);
localSets.push_back(log);
if (log->locality != tagLocalitySatellite) {
bestSet = localSets.size() - 1;
}
}
}
if (!localSets.size()) {
lastBegin = end;
}
if (begin >= lastBegin && localSets.size()) {
TraceEvent("TLogPeekAllCurrentOnly", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("BestLogs", localSets[bestSet]->logServerString());
return makeReference<ILogSystem::SetPeekCursor>(
localSets, bestSet, localSets[bestSet]->bestLocationFor(tag), tag, begin, end, parallelGetMore);
} else {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
std::vector<LogMessageVersion> epochEnds;
if (lastBegin < end && localSets.size()) {
TraceEvent("TLogPeekAllAddingCurrent", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("BestLogs", localSets[bestSet]->logServerString());
cursors.push_back(makeReference<ILogSystem::SetPeekCursor>(
localSets, bestSet, localSets[bestSet]->bestLocationFor(tag), tag, lastBegin, end, parallelGetMore));
}
for (int i = 0; begin < lastBegin; i++) {
if (i == oldLogData.size()) {
if (tag == txsTag || tag.locality == tagLocalityTxs || tag == cacheTag) {
break;
}
TraceEvent("TLogPeekAllDead", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("LastBegin", lastBegin)
.detail("OldLogDataSize", oldLogData.size());
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), tag, begin, getPeekEnd(), false, false);
}
int bestOldSet = 0;
std::vector<Reference<LogSet>> localOldSets;
Version thisBegin = begin;
bool thisSpecial = false;
for (auto& log : oldLogData[i].tLogs) {
if (log->locality == tagLocalitySpecial || log->locality == tagLocalityUpgraded) {
thisSpecial = true;
}
if (log->isLocal && log->logServers.size() &&
(log->locality == tagLocalitySpecial || log->locality == tagLocalityUpgraded ||
log->locality == tag.locality || tag == txsTag || tag.locality == tagLocalityTxs ||
tag.locality == tagLocalityLogRouter ||
((tag.locality == tagLocalityUpgraded || tag == cacheTag) &&
log->locality != tagLocalitySatellite))) {
thisBegin = std::max(thisBegin, log->startVersion);
localOldSets.push_back(log);
if (log->locality != tagLocalitySatellite) {
bestOldSet = localOldSets.size() - 1;
}
}
}
if (!localOldSets.size()) {
TraceEvent("TLogPeekAllNoLocalSets", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("LastBegin", lastBegin);
if (!cursors.size() && !foundSpecial) {
continue;
}
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), tag, begin, getPeekEnd(), false, false);
}
if (thisSpecial) {
foundSpecial = true;
}
if (thisBegin < lastBegin) {
if (thisBegin < end) {
TraceEvent("TLogPeekAllAddingOld", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("BestLogs", localOldSets[bestOldSet]->logServerString())
.detail("LastBegin", lastBegin)
.detail("ThisBegin", thisBegin);
cursors.push_back(
makeReference<ILogSystem::SetPeekCursor>(localOldSets,
bestOldSet,
localOldSets[bestOldSet]->bestLocationFor(tag),
tag,
thisBegin,
std::min(lastBegin, end),
parallelGetMore));
epochEnds.push_back(LogMessageVersion(std::min(lastBegin, end)));
}
lastBegin = thisBegin;
}
}
return makeReference<ILogSystem::MultiCursor>(cursors, epochEnds);
}
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peekRemote(UID dbgid,
Version begin,
Optional<Version> end,
Tag tag,
bool parallelGetMore) {
int bestSet = -1;
Version lastBegin = recoveredAt.present() ? recoveredAt.get() + 1 : 0;
for (int t = 0; t < tLogs.size(); t++) {
if (tLogs[t]->isLocal) {
lastBegin = std::max(lastBegin, tLogs[t]->startVersion);
}
if (tLogs[t]->logRouters.size()) {
ASSERT(bestSet == -1);
bestSet = t;
}
}
if (bestSet == -1) {
TraceEvent("TLogPeekRemoteNoBestSet", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end.present() ? end.get() : getPeekEnd());
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), tag, begin, getPeekEnd(), false, parallelGetMore);
}
if (begin >= lastBegin) {
TraceEvent("TLogPeekRemoteBestOnly", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end.present() ? end.get() : getPeekEnd())
.detail("BestSet", bestSet)
.detail("BestSetStart", lastBegin)
.detail("LogRouterIds", tLogs[bestSet]->logRouterString());
return makeReference<ILogSystem::BufferedCursor>(
tLogs[bestSet]->logRouters, tag, begin, end.present() ? end.get() + 1 : getPeekEnd(), parallelGetMore);
} else {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
std::vector<LogMessageVersion> epochEnds;
TraceEvent("TLogPeekRemoteAddingBest", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end.present() ? end.get() : getPeekEnd())
.detail("BestSet", bestSet)
.detail("BestSetStart", lastBegin)
.detail("LogRouterIds", tLogs[bestSet]->logRouterString());
cursors.push_back(makeReference<ILogSystem::BufferedCursor>(
tLogs[bestSet]->logRouters, tag, lastBegin, end.present() ? end.get() + 1 : getPeekEnd(), parallelGetMore));
int i = 0;
while (begin < lastBegin) {
if (i == oldLogData.size()) {
TraceEvent("TLogPeekRemoteDead", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end.present() ? end.get() : getPeekEnd())
.detail("LastBegin", lastBegin)
.detail("OldLogDataSize", oldLogData.size());
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(),
tag,
begin,
getPeekEnd(),
false,
parallelGetMore);
}
int bestOldSet = -1;
Version thisBegin = begin;
for (int t = 0; t < oldLogData[i].tLogs.size(); t++) {
if (oldLogData[i].tLogs[t]->isLocal) {
thisBegin = std::max(thisBegin, oldLogData[i].tLogs[t]->startVersion);
}
if (oldLogData[i].tLogs[t]->logRouters.size()) {
ASSERT(bestOldSet == -1);
bestOldSet = t;
}
}
if (bestOldSet == -1) {
TraceEvent("TLogPeekRemoteNoOldBestSet", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end.present() ? end.get() : getPeekEnd());
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(),
tag,
begin,
getPeekEnd(),
false,
parallelGetMore);
}
if (thisBegin < lastBegin) {
TraceEvent("TLogPeekRemoteAddingOldBest", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end.present() ? end.get() : getPeekEnd())
.detail("BestOldSet", bestOldSet)
.detail("LogRouterIds", oldLogData[i].tLogs[bestOldSet]->logRouterString())
.detail("LastBegin", lastBegin)
.detail("ThisBegin", thisBegin)
.detail("BestStartVer", oldLogData[i].tLogs[bestOldSet]->startVersion);
cursors.push_back(makeReference<ILogSystem::BufferedCursor>(
oldLogData[i].tLogs[bestOldSet]->logRouters, tag, thisBegin, lastBegin, parallelGetMore));
epochEnds.emplace_back(lastBegin);
lastBegin = thisBegin;
}
i++;
}
return makeReference<ILogSystem::MultiCursor>(cursors, epochEnds);
}
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peek(UID dbgid,
Version begin,
Optional<Version> end,
Tag tag,
bool parallelGetMore) {
if (!tLogs.size()) {
TraceEvent("TLogPeekNoLogSets", dbgid).detail("Tag", tag.toString()).detail("Begin", begin);
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), tag, begin, getPeekEnd(), false, false);
}
if (tag.locality == tagLocalityRemoteLog) {
return peekRemote(dbgid, begin, end, tag, parallelGetMore);
} else {
return peekAll(dbgid, begin, getPeekEnd(), tag, parallelGetMore);
}
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peek(UID dbgid,
Version begin,
Optional<Version> end,
std::vector<Tag> tags,
bool parallelGetMore) {
if (tags.empty()) {
TraceEvent("TLogPeekNoTags", dbgid).detail("Begin", begin);
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), invalidTag, begin, getPeekEnd(), false, false);
}
if (tags.size() == 1) {
return peek(dbgid, begin, end, tags[0], parallelGetMore);
}
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
cursors.reserve(tags.size());
for (auto tag : tags) {
cursors.push_back(peek(dbgid, begin, end, tag, parallelGetMore));
}
return makeReference<ILogSystem::BufferedCursor>(cursors,
begin,
end.present() ? end.get() + 1 : getPeekEnd(),
true,
tLogs[0]->locality == tagLocalityUpgraded,
false);
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peekLocal(UID dbgid,
Tag tag,
Version begin,
Version end,
bool useMergePeekCursors,
int8_t peekLocality) {
if (tag.locality >= 0 || tag.locality == tagLocalityUpgraded || tag.locality == tagLocalitySpecial) {
peekLocality = tag.locality;
}
ASSERT(peekLocality >= 0 || peekLocality == tagLocalityUpgraded || tag.locality == tagLocalitySpecial);
int bestSet = -1;
bool foundSpecial = false;
int logCount = 0;
for (int t = 0; t < tLogs.size(); t++) {
if (tLogs[t]->logServers.size() && tLogs[t]->locality != tagLocalitySatellite) {
logCount++;
}
if (tLogs[t]->logServers.size() &&
(tLogs[t]->locality == tagLocalitySpecial || tLogs[t]->locality == tagLocalityUpgraded ||
tLogs[t]->locality == peekLocality || peekLocality == tagLocalityUpgraded ||
peekLocality == tagLocalitySpecial)) {
if (tLogs[t]->locality == tagLocalitySpecial || tLogs[t]->locality == tagLocalityUpgraded) {
foundSpecial = true;
}
bestSet = t;
break;
}
}
if (bestSet == -1) {
TraceEvent("TLogPeekLocalNoBestSet", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("LogCount", logCount);
if (useMergePeekCursors || logCount > 1) {
throw worker_removed();
} else {
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), tag, begin, getPeekEnd(), false, false);
}
}
if (begin >= tLogs[bestSet]->startVersion) {
TraceEvent("TLogPeekLocalBestOnly", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("BestSet", bestSet)
.detail("BestSetStart", tLogs[bestSet]->startVersion)
.detail("LogId", tLogs[bestSet]->logServers[tLogs[bestSet]->bestLocationFor(tag)]->get().id());
if (useMergePeekCursors) {
return makeReference<ILogSystem::MergedPeekCursor>(tLogs[bestSet]->logServers,
tLogs[bestSet]->bestLocationFor(tag),
tLogs[bestSet]->logServers.size() + 1 -
tLogs[bestSet]->tLogReplicationFactor,
tag,
begin,
end,
true,
tLogs[bestSet]->tLogLocalities,
tLogs[bestSet]->tLogPolicy,
tLogs[bestSet]->tLogReplicationFactor);
} else {
return makeReference<ILogSystem::ServerPeekCursor>(
tLogs[bestSet]->logServers[tLogs[bestSet]->bestLocationFor(tag)], tag, begin, end, false, false);
}
} else {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
std::vector<LogMessageVersion> epochEnds;
if (tLogs[bestSet]->startVersion < end) {
TraceEvent("TLogPeekLocalAddingBest", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("BestSet", bestSet)
.detail("BestSetStart", tLogs[bestSet]->startVersion)
.detail("LogId", tLogs[bestSet]->logServers[tLogs[bestSet]->bestLocationFor(tag)]->get().id());
if (useMergePeekCursors) {
cursors.push_back(makeReference<ILogSystem::MergedPeekCursor>(tLogs[bestSet]->logServers,
tLogs[bestSet]->bestLocationFor(tag),
tLogs[bestSet]->logServers.size() + 1 -
tLogs[bestSet]->tLogReplicationFactor,
tag,
tLogs[bestSet]->startVersion,
end,
true,
tLogs[bestSet]->tLogLocalities,
tLogs[bestSet]->tLogPolicy,
tLogs[bestSet]->tLogReplicationFactor));
} else {
cursors.push_back(makeReference<ILogSystem::ServerPeekCursor>(
tLogs[bestSet]->logServers[tLogs[bestSet]->bestLocationFor(tag)],
tag,
tLogs[bestSet]->startVersion,
end,
false,
false));
}
}
Version lastBegin = tLogs[bestSet]->startVersion;
for (int i = 0; begin < lastBegin; i++) {
if (i == oldLogData.size()) {
if ((tag == txsTag || tag.locality == tagLocalityTxs) && cursors.size()) {
break;
}
TraceEvent("TLogPeekLocalDead", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("LastBegin", lastBegin)
.detail("OldLogDataSize", oldLogData.size());
throw worker_removed();
}
int bestOldSet = -1;
logCount = 0;
bool nextFoundSpecial = false;
for (int t = 0; t < oldLogData[i].tLogs.size(); t++) {
if (oldLogData[i].tLogs[t]->logServers.size() &&
oldLogData[i].tLogs[t]->locality != tagLocalitySatellite) {
logCount++;
}
if (oldLogData[i].tLogs[t]->logServers.size() &&
(oldLogData[i].tLogs[t]->locality == tagLocalitySpecial ||
oldLogData[i].tLogs[t]->locality == tagLocalityUpgraded ||
oldLogData[i].tLogs[t]->locality == peekLocality || peekLocality == tagLocalityUpgraded ||
peekLocality == tagLocalitySpecial)) {
if (oldLogData[i].tLogs[t]->locality == tagLocalitySpecial ||
oldLogData[i].tLogs[t]->locality == tagLocalityUpgraded) {
nextFoundSpecial = true;
}
if (foundSpecial && !oldLogData[i].tLogs[t]->isLocal) {
TraceEvent("TLogPeekLocalRemoteBeforeSpecial", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("LastBegin", lastBegin)
.detail("OldLogDataSize", oldLogData.size())
.detail("Idx", i);
throw worker_removed();
}
bestOldSet = t;
break;
}
}
if (bestOldSet == -1) {
TraceEvent("TLogPeekLocalNoBestSet", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("LastBegin", lastBegin)
.detail("OldLogDataSize", oldLogData.size())
.detail("Idx", i)
.detail("LogRouterTags", oldLogData[i].logRouterTags)
.detail("LogCount", logCount)
.detail("FoundSpecial", foundSpecial);
if (oldLogData[i].logRouterTags == 0 || logCount > 1 || foundSpecial) {
throw worker_removed();
}
continue;
}
foundSpecial = nextFoundSpecial;
Version thisBegin = std::max(oldLogData[i].tLogs[bestOldSet]->startVersion, begin);
if (thisBegin < lastBegin) {
if (thisBegin < end) {
TraceEvent("TLogPeekLocalAddingOldBest", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("End", end)
.detail("BestOldSet", bestOldSet)
.detail("LogServers", oldLogData[i].tLogs[bestOldSet]->logServerString())
.detail("ThisBegin", thisBegin)
.detail("LastBegin", lastBegin);
// detail("LogId",
// oldLogData[i].tLogs[bestOldSet]->logServers[tLogs[bestOldSet]->bestLocationFor( tag
// )]->get().id());
cursors.push_back(makeReference<ILogSystem::MergedPeekCursor>(
oldLogData[i].tLogs[bestOldSet]->logServers,
oldLogData[i].tLogs[bestOldSet]->bestLocationFor(tag),
oldLogData[i].tLogs[bestOldSet]->logServers.size() + 1 -
oldLogData[i].tLogs[bestOldSet]->tLogReplicationFactor,
tag,
thisBegin,
std::min(lastBegin, end),
useMergePeekCursors,
oldLogData[i].tLogs[bestOldSet]->tLogLocalities,
oldLogData[i].tLogs[bestOldSet]->tLogPolicy,
oldLogData[i].tLogs[bestOldSet]->tLogReplicationFactor));
epochEnds.emplace_back(std::min(lastBegin, end));
}
lastBegin = thisBegin;
}
}
return makeReference<ILogSystem::MultiCursor>(cursors, epochEnds);
}
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peekTxs(UID dbgid,
Version begin,
int8_t peekLocality,
Version localEnd,
bool canDiscardPopped) {
Version end = getEnd();
if (!tLogs.size()) {
TraceEvent("TLogPeekTxsNoLogs", dbgid).log();
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), txsTag, begin, end, false, false);
}
TraceEvent("TLogPeekTxs", dbgid)
.detail("Begin", begin)
.detail("End", end)
.detail("LocalEnd", localEnd)
.detail("PeekLocality", peekLocality)
.detail("CanDiscardPopped", canDiscardPopped);
int maxTxsTags = txsTags;
bool needsOldTxs = tLogs[0]->tLogVersion < TLogVersion::V4;
for (auto& it : oldLogData) {
maxTxsTags = std::max<int>(maxTxsTags, it.txsTags);
needsOldTxs = needsOldTxs || it.tLogs[0]->tLogVersion < TLogVersion::V4;
}
if (peekLocality < 0 || localEnd == invalidVersion || localEnd <= begin) {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
cursors.reserve(maxTxsTags);
for (int i = 0; i < maxTxsTags; i++) {
cursors.push_back(peekAll(dbgid, begin, end, Tag(tagLocalityTxs, i), true));
}
// SOMEDAY: remove once upgrades from 6.2 are no longer supported
if (needsOldTxs) {
cursors.push_back(peekAll(dbgid, begin, end, txsTag, true));
}
return makeReference<ILogSystem::BufferedCursor>(cursors, begin, end, false, false, canDiscardPopped);
}
try {
if (localEnd >= end) {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
cursors.reserve(maxTxsTags);
for (int i = 0; i < maxTxsTags; i++) {
cursors.push_back(peekLocal(dbgid, Tag(tagLocalityTxs, i), begin, end, true, peekLocality));
}
// SOMEDAY: remove once upgrades from 6.2 are no longer supported
if (needsOldTxs) {
cursors.push_back(peekLocal(dbgid, txsTag, begin, end, true, peekLocality));
}
return makeReference<ILogSystem::BufferedCursor>(cursors, begin, end, false, false, canDiscardPopped);
}
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
std::vector<LogMessageVersion> epochEnds;
cursors.resize(2);
std::vector<Reference<ILogSystem::IPeekCursor>> localCursors;
std::vector<Reference<ILogSystem::IPeekCursor>> allCursors;
for (int i = 0; i < maxTxsTags; i++) {
localCursors.push_back(peekLocal(dbgid, Tag(tagLocalityTxs, i), begin, localEnd, true, peekLocality));
allCursors.push_back(peekAll(dbgid, localEnd, end, Tag(tagLocalityTxs, i), true));
}
// SOMEDAY: remove once upgrades from 6.2 are no longer supported
if (needsOldTxs) {
localCursors.push_back(peekLocal(dbgid, txsTag, begin, localEnd, true, peekLocality));
allCursors.push_back(peekAll(dbgid, localEnd, end, txsTag, true));
}
cursors[1] =
makeReference<ILogSystem::BufferedCursor>(localCursors, begin, localEnd, false, false, canDiscardPopped);
cursors[0] = makeReference<ILogSystem::BufferedCursor>(allCursors, localEnd, end, false, false, false);
epochEnds.emplace_back(localEnd);
return makeReference<ILogSystem::MultiCursor>(cursors, epochEnds);
} catch (Error& e) {
if (e.code() == error_code_worker_removed) {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
cursors.reserve(maxTxsTags);
for (int i = 0; i < maxTxsTags; i++) {
cursors.push_back(peekAll(dbgid, begin, end, Tag(tagLocalityTxs, i), true));
}
// SOMEDAY: remove once upgrades from 6.2 are no longer supported
if (needsOldTxs) {
cursors.push_back(peekAll(dbgid, begin, end, txsTag, true));
}
return makeReference<ILogSystem::BufferedCursor>(cursors, begin, end, false, false, canDiscardPopped);
}
throw;
}
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peekSingle(UID dbgid,
Version begin,
Tag tag,
std::vector<std::pair<Version, Tag>> history) {
while (history.size() && begin >= history.back().first) {
history.pop_back();
}
if (history.size() == 0) {
TraceEvent("TLogPeekSingleNoHistory", dbgid).detail("Tag", tag.toString()).detail("Begin", begin);
return peekLocal(dbgid, tag, begin, getPeekEnd(), false);
} else {
std::vector<Reference<ILogSystem::IPeekCursor>> cursors;
std::vector<LogMessageVersion> epochEnds;
TraceEvent("TLogPeekSingleAddingLocal", dbgid).detail("Tag", tag.toString()).detail("Begin", history[0].first);
cursors.push_back(peekLocal(dbgid, tag, history[0].first, getPeekEnd(), false));
for (int i = 0; i < history.size(); i++) {
TraceEvent("TLogPeekSingleAddingOld", dbgid)
.detail("Tag", tag.toString())
.detail("HistoryTag", history[i].second.toString())
.detail("Begin", i + 1 == history.size() ? begin : std::max(history[i + 1].first, begin))
.detail("End", history[i].first);
cursors.push_back(peekLocal(dbgid,
history[i].second,
i + 1 == history.size() ? begin : std::max(history[i + 1].first, begin),
history[i].first,
false));
epochEnds.emplace_back(history[i].first);
}
return makeReference<ILogSystem::MultiCursor>(cursors, epochEnds);
}
}
Reference<ILogSystem::IPeekCursor> TagPartitionedLogSystem::peekLogRouter(UID dbgid, Version begin, Tag tag) {
bool found = false;
for (const auto& log : tLogs) {
found = log->hasLogRouter(dbgid) || log->hasBackupWorker(dbgid);
if (found) {
break;
}
}
if (found) {
if (stopped) {
std::vector<Reference<LogSet>> localSets;
int bestPrimarySet = 0;
int bestSatelliteSet = -1;
for (auto& log : tLogs) {
if (log->isLocal && log->logServers.size()) {
TraceEvent("TLogPeekLogRouterLocalSet", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("LogServers", log->logServerString());
localSets.push_back(log);
if (log->locality == tagLocalitySatellite) {
bestSatelliteSet = localSets.size() - 1;
} else {
bestPrimarySet = localSets.size() - 1;
}
}
}
int bestSet = bestPrimarySet;
if (SERVER_KNOBS->LOG_ROUTER_PEEK_FROM_SATELLITES_PREFERRED && bestSatelliteSet != -1 &&
tLogs[bestSatelliteSet]->tLogVersion >= TLogVersion::V4) {
bestSet = bestSatelliteSet;
}
TraceEvent("TLogPeekLogRouterSets", dbgid).detail("Tag", tag.toString()).detail("Begin", begin);
// FIXME: do this merge on one of the logs in the other data center to avoid sending multiple copies
// across the WAN
return makeReference<ILogSystem::SetPeekCursor>(
localSets, bestSet, localSets[bestSet]->bestLocationFor(tag), tag, begin, getPeekEnd(), true);
} else {
int bestPrimarySet = -1;
int bestSatelliteSet = -1;
for (int i = 0; i < tLogs.size(); i++) {
const auto& log = tLogs[i];
if (log->logServers.size() && log->isLocal) {
if (log->locality == tagLocalitySatellite) {
bestSatelliteSet = i;
break;
} else {
if (bestPrimarySet == -1)
bestPrimarySet = i;
}
}
}
int bestSet = bestPrimarySet;
if (SERVER_KNOBS->LOG_ROUTER_PEEK_FROM_SATELLITES_PREFERRED && bestSatelliteSet != -1 &&
tLogs[bestSatelliteSet]->tLogVersion >= TLogVersion::V4) {
bestSet = bestSatelliteSet;
}
const auto& log = tLogs[bestSet];
TraceEvent("TLogPeekLogRouterBestOnly", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("LogId", log->logServers[log->bestLocationFor(tag)]->get().id());
return makeReference<ILogSystem::ServerPeekCursor>(
log->logServers[log->bestLocationFor(tag)], tag, begin, getPeekEnd(), false, true);
}
}
bool firstOld = true;
for (const auto& old : oldLogData) {
found = false;
for (const auto& log : old.tLogs) {
found = log->hasLogRouter(dbgid) || log->hasBackupWorker(dbgid);
if (found) {
break;
}
}
if (found) {
int bestPrimarySet = 0;
int bestSatelliteSet = -1;
std::vector<Reference<LogSet>> localSets;
for (auto& log : old.tLogs) {
if (log->isLocal && log->logServers.size()) {
TraceEvent("TLogPeekLogRouterOldLocalSet", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("LogServers", log->logServerString());
localSets.push_back(log);
if (log->locality == tagLocalitySatellite) {
bestSatelliteSet = localSets.size() - 1;
} else {
bestPrimarySet = localSets.size() - 1;
}
}
}
int bestSet = bestPrimarySet;
if (SERVER_KNOBS->LOG_ROUTER_PEEK_FROM_SATELLITES_PREFERRED && bestSatelliteSet != -1 &&
old.tLogs[bestSatelliteSet]->tLogVersion >= TLogVersion::V4) {
bestSet = bestSatelliteSet;
}
TraceEvent("TLogPeekLogRouterOldSets", dbgid)
.detail("Tag", tag.toString())
.detail("Begin", begin)
.detail("OldEpoch", old.epochEnd)
.detail("RecoveredAt", recoveredAt.present() ? recoveredAt.get() : -1)
.detail("FirstOld", firstOld);
// FIXME: do this merge on one of the logs in the other data center to avoid sending multiple copies
// across the WAN
return makeReference<ILogSystem::SetPeekCursor>(localSets,
bestSet,
localSets[bestSet]->bestLocationFor(tag),
tag,
begin,
firstOld && recoveredAt.present() ? recoveredAt.get() + 1
: old.epochEnd,
true);
}
firstOld = false;
}
return makeReference<ILogSystem::ServerPeekCursor>(
Reference<AsyncVar<OptionalInterface<TLogInterface>>>(), tag, begin, getPeekEnd(), false, false);
}
Version TagPartitionedLogSystem::getKnownCommittedVersion() {
Version result = invalidVersion;
for (auto& it : lockResults) {
auto versions = TagPartitionedLogSystem::getDurableVersion(dbgid, it);
if (versions.present()) {
result = std::max(result, std::get<0>(versions.get()));
}
}
return result;
}
Future<Void> TagPartitionedLogSystem::onKnownCommittedVersionChange() {
std::vector<Future<Void>> result;
for (auto& it : lockResults) {
result.push_back(TagPartitionedLogSystem::getDurableVersionChanged(it));
}
if (!result.size()) {
return Never();
}
return waitForAny(result);
}
void TagPartitionedLogSystem::popLogRouter(
Version upTo,
Tag tag,
Version durableKnownCommittedVersion,
int8_t popLocality) { // FIXME: do not need to pop all generations of old logs
if (!upTo)
return;
for (auto& t : tLogs) {
if (t->locality == popLocality) {
for (auto& log : t->logRouters) {
Version prev = outstandingPops[std::make_pair(log->get().id(), tag)].first;
if (prev < upTo)
outstandingPops[std::make_pair(log->get().id(), tag)] =
std::make_pair(upTo, durableKnownCommittedVersion);
if (prev == 0) {
popActors.add(popFromLog(
this, log, tag, 0.0)); // Fast pop time because log routers can only hold 5 seconds of data.
}
}
}
}
for (auto& old : oldLogData) {
for (auto& t : old.tLogs) {
if (t->locality == popLocality) {
for (auto& log : t->logRouters) {
Version prev = outstandingPops[std::make_pair(log->get().id(), tag)].first;
if (prev < upTo)
outstandingPops[std::make_pair(log->get().id(), tag)] =
std::make_pair(upTo, durableKnownCommittedVersion);
if (prev == 0)
popActors.add(popFromLog(this, log, tag, 0.0));
}
}
}
}
}
void TagPartitionedLogSystem::popTxs(Version upTo, int8_t popLocality) {
if (getTLogVersion() < TLogVersion::V4) {
pop(upTo, txsTag, 0, popLocality);
} else {
for (int i = 0; i < txsTags; i++) {
pop(upTo, Tag(tagLocalityTxs, i), 0, popLocality);
}
}
}
void TagPartitionedLogSystem::pop(Version upTo, Tag tag, Version durableKnownCommittedVersion, int8_t popLocality) {
if (upTo <= 0)
return;
if (tag.locality == tagLocalityRemoteLog) {
popLogRouter(upTo, tag, durableKnownCommittedVersion, popLocality);
return;
}
for (auto& t : tLogs) {
if (t->locality == tagLocalitySpecial || t->locality == tag.locality || tag.locality == tagLocalityUpgraded ||
(tag.locality < 0 && ((popLocality == tagLocalityInvalid) == t->isLocal))) {
for (auto& log : t->logServers) {
Version prev = outstandingPops[std::make_pair(log->get().id(), tag)].first;
if (prev < upTo) {
// update pop version for popFromLog actor
outstandingPops[std::make_pair(log->get().id(), tag)] =
std::make_pair(upTo, durableKnownCommittedVersion);
}
if (prev == 0) {
// pop tag from log upto version defined in outstandingPops[].first
popActors.add(popFromLog(this, log, tag, 1.0)); //< FIXME: knob
}
}
}
}
}
ACTOR Future<Void> TagPartitionedLogSystem::popFromLog(TagPartitionedLogSystem* self,
Reference<AsyncVar<OptionalInterface<TLogInterface>>> log,
Tag tag,
double time) {
state Version last = 0;
loop {
wait(delay(time, TaskPriority::TLogPop));
// to: first is upto version, second is durableKnownComittedVersion
state std::pair<Version, Version> to = self->outstandingPops[std::make_pair(log->get().id(), tag)];
if (to.first <= last) {
self->outstandingPops.erase(std::make_pair(log->get().id(), tag));
return Void();
}
try {
if (!log->get().present())
return Void();
wait(log->get().interf().popMessages.getReply(TLogPopRequest(to.first, to.second, tag),
TaskPriority::TLogPop));
last = to.first;
} catch (Error& e) {
if (e.code() == error_code_actor_cancelled)
throw;
TraceEvent((e.code() == error_code_broken_promise) ? SevInfo : SevError, "LogPopError", self->dbgid)
.error(e)
.detail("Log", log->get().id());
return Void(); // Leaving outstandingPops filled in means no further pop requests to this tlog from this
// logSystem
}
}
}
ACTOR Future<Version> TagPartitionedLogSystem::getPoppedFromTLog(
Reference<AsyncVar<OptionalInterface<TLogInterface>>> log,
Tag tag) {
loop {
choose {
when(TLogPeekReply rep =
wait(log->get().present() ? brokenPromiseToNever(log->get().interf().peekMessages.getReply(
TLogPeekRequest(-1, tag, false, false)))
: Never())) {
ASSERT(rep.popped.present());
return rep.popped.get();
}
when(wait(log->onChange())) {}
}
}
}
ACTOR Future<Version> TagPartitionedLogSystem::getPoppedTxs(TagPartitionedLogSystem* self) {
state std::vector<std::vector<Future<Version>>> poppedFutures;
state std::vector<Future<Void>> poppedReady;
if (self->tLogs.size()) {
poppedFutures.push_back(std::vector<Future<Version>>());
for (auto& it : self->tLogs) {
for (auto& log : it->logServers) {
poppedFutures.back().push_back(TagPartitionedLogSystem::getPoppedFromTLog(
log, self->tLogs[0]->tLogVersion < TLogVersion::V4 ? txsTag : Tag(tagLocalityTxs, 0)));
}
}
poppedReady.push_back(waitForAny(poppedFutures.back()));
}
for (auto& old : self->oldLogData) {
if (old.tLogs.size()) {
poppedFutures.push_back(std::vector<Future<Version>>());
for (auto& it : old.tLogs) {
for (auto& log : it->logServers) {
poppedFutures.back().push_back(TagPartitionedLogSystem::getPoppedFromTLog(
log, old.tLogs[0]->tLogVersion < TLogVersion::V4 ? txsTag : Tag(tagLocalityTxs, 0)));
}
}
poppedReady.push_back(waitForAny(poppedFutures.back()));
}
}
state UID dbgid = self->dbgid;
state Future<Void> maxGetPoppedDuration = delay(SERVER_KNOBS->TXS_POPPED_MAX_DELAY);
wait(waitForAll(poppedReady) || maxGetPoppedDuration);
if (maxGetPoppedDuration.isReady()) {
TraceEvent(SevWarnAlways, "PoppedTxsNotReady", dbgid).log();
}
Version maxPopped = 1;
for (auto& it : poppedFutures) {
for (auto& v : it) {
if (v.isReady()) {
maxPopped = std::max(maxPopped, v.get());
}
}
}
return maxPopped;
}
Future<Version> TagPartitionedLogSystem::getTxsPoppedVersion() {
return getPoppedTxs(this);
}
ACTOR Future<Void> TagPartitionedLogSystem::confirmEpochLive_internal(Reference<LogSet> logSet, Optional<UID> debugID) {
state std::vector<Future<Void>> alive;
int numPresent = 0;
for (auto& t : logSet->logServers) {
if (t->get().present()) {
alive.push_back(brokenPromiseToNever(t->get().interf().confirmRunning.getReply(
TLogConfirmRunningRequest(debugID), TaskPriority::TLogConfirmRunningReply)));
numPresent++;
} else {
alive.push_back(Never());
}
}
wait(quorum(alive, std::min(logSet->tLogReplicationFactor, numPresent - logSet->tLogWriteAntiQuorum)));
state std::vector<LocalityEntry> aliveEntries;
state std::vector<bool> responded(alive.size(), false);
loop {
for (int i = 0; i < alive.size(); i++) {
if (!responded[i] && alive[i].isReady() && !alive[i].isError()) {
aliveEntries.push_back(logSet->logEntryArray[i]);
responded[i] = true;
}
}
if (logSet->satisfiesPolicy(aliveEntries)) {
return Void();
}
// The current set of responders that we have weren't enough to form a quorum, so we must
// wait for more responses and try again.
std::vector<Future<Void>> changes;
for (int i = 0; i < alive.size(); i++) {
if (!alive[i].isReady()) {
changes.push_back(ready(alive[i]));
} else if (alive[i].isReady() && alive[i].isError() &&
alive[i].getError().code() == error_code_tlog_stopped) {
// All commits must go to all TLogs. If any TLog is stopped, then our epoch has ended.
return Never();
}
}
ASSERT(changes.size() != 0);
wait(waitForAny(changes));
}
}
Future<Void> TagPartitionedLogSystem::confirmEpochLive(Optional<UID> debugID) {
std::vector<Future<Void>> quorumResults;
for (auto& it : tLogs) {
if (it->isLocal && it->logServers.size()) {
quorumResults.push_back(confirmEpochLive_internal(it, debugID));
}
}
return waitForAll(quorumResults);
}
Future<Void> TagPartitionedLogSystem::endEpoch() {
std::vector<Future<Void>> lockResults;
for (auto& logSet : tLogs) {
for (auto& log : logSet->logServers) {
lockResults.push_back(success(lockTLog(dbgid, log)));
}
}
return waitForAll(lockResults);
}
Future<Reference<ILogSystem>> TagPartitionedLogSystem::newEpoch(
RecruitFromConfigurationReply const& recr,
Future<RecruitRemoteFromConfigurationReply> const& fRemoteWorkers,
UID clusterId,
DatabaseConfiguration const& config,
LogEpoch recoveryCount,
int8_t primaryLocality,
int8_t remoteLocality,
std::vector<Tag> const& allTags,
Reference<AsyncVar<bool>> const& recruitmentStalled) {
return newEpoch(Reference<TagPartitionedLogSystem>::addRef(this),
recr,
fRemoteWorkers,
clusterId,
config,
recoveryCount,
primaryLocality,
remoteLocality,
allTags,
recruitmentStalled);
}
LogSystemConfig TagPartitionedLogSystem::getLogSystemConfig() const {
LogSystemConfig logSystemConfig(epoch);
logSystemConfig.logSystemType = logSystemType;
logSystemConfig.expectedLogSets = expectedLogSets;
logSystemConfig.logRouterTags = logRouterTags;
logSystemConfig.txsTags = txsTags;
logSystemConfig.recruitmentID = recruitmentID;
logSystemConfig.stopped = stopped;
logSystemConfig.recoveredAt = recoveredAt;
logSystemConfig.pseudoLocalities = pseudoLocalities;
logSystemConfig.oldestBackupEpoch = oldestBackupEpoch;
for (const Reference<LogSet>& logSet : tLogs) {
if (logSet->isLocal || remoteLogsWrittenToCoreState) {
logSystemConfig.tLogs.emplace_back(*logSet);
}
}
if (!recoveryCompleteWrittenToCoreState.get()) {
for (const auto& oldData : oldLogData) {
logSystemConfig.oldTLogs.emplace_back(oldData);
}
}
return logSystemConfig;
}
Standalone<StringRef> TagPartitionedLogSystem::getLogsValue() const {
std::vector<std::pair<UID, NetworkAddress>> logs;
std::vector<std::pair<UID, NetworkAddress>> oldLogs;
for (auto& t : tLogs) {
if (t->isLocal || remoteLogsWrittenToCoreState) {
for (int i = 0; i < t->logServers.size(); i++) {
logs.emplace_back(t->logServers[i]->get().id(),
t->logServers[i]->get().present() ? t->logServers[i]->get().interf().address()
: NetworkAddress());
}
}
}
if (!recoveryCompleteWrittenToCoreState.get()) {
for (int i = 0; i < oldLogData.size(); i++) {
for (auto& t : oldLogData[i].tLogs) {
for (int j = 0; j < t->logServers.size(); j++) {
oldLogs.emplace_back(t->logServers[j]->get().id(),
t->logServers[j]->get().present() ? t->logServers[j]->get().interf().address()
: NetworkAddress());
}
}
}
}
return logsValue(logs, oldLogs);
}
Future<Void> TagPartitionedLogSystem::onLogSystemConfigChange() {
std::vector<Future<Void>> changes;
changes.push_back(logSystemConfigChanged.onTrigger());
for (auto& t : tLogs) {
for (int i = 0; i < t->logServers.size(); i++) {
changes.push_back(t->logServers[i]->onChange());
}
}
for (int i = 0; i < oldLogData.size(); i++) {
for (auto& t : oldLogData[i].tLogs) {
for (int j = 0; j < t->logServers.size(); j++) {
changes.push_back(t->logServers[j]->onChange());
}
}
}
if (hasRemoteServers && !remoteRecovery.isReady()) {
changes.push_back(remoteRecovery);
}
return waitForAny(changes);
}
Version TagPartitionedLogSystem::getEnd() const {
ASSERT(recoverAt.present());
return recoverAt.get() + 1;
}
Version TagPartitionedLogSystem::getPeekEnd() const {
if (recoverAt.present())
return getEnd();
else
return std::numeric_limits<Version>::max();
}
void TagPartitionedLogSystem::getPushLocations(VectorRef<Tag> tags,
std::vector<int>& locations,
bool allLocations) const {
int locationOffset = 0;
for (auto& log : tLogs) {
if (log->isLocal && log->logServers.size()) {
log->getPushLocations(tags, locations, locationOffset, allLocations);
locationOffset += log->logServers.size();
}
}
}
bool TagPartitionedLogSystem::hasRemoteLogs() const {
return logRouterTags > 0 || pseudoLocalities.size() > 0;
}
Tag TagPartitionedLogSystem::getRandomRouterTag() const {
return Tag(tagLocalityLogRouter, deterministicRandom()->randomInt(0, logRouterTags));
}
Tag TagPartitionedLogSystem::getRandomTxsTag() const {
return Tag(tagLocalityTxs, deterministicRandom()->randomInt(0, txsTags));
}
TLogVersion TagPartitionedLogSystem::getTLogVersion() const {
return tLogs[0]->tLogVersion;
}
int TagPartitionedLogSystem::getLogRouterTags() const {
return logRouterTags;
}
Version TagPartitionedLogSystem::getBackupStartVersion() const {
ASSERT(tLogs.size() > 0);
return backupStartVersion;
}
std::map<LogEpoch, ILogSystem::EpochTagsVersionsInfo> TagPartitionedLogSystem::getOldEpochTagsVersionsInfo() const {
std::map<LogEpoch, EpochTagsVersionsInfo> epochInfos;
for (const auto& old : oldLogData) {
epochInfos.insert(
{ old.epoch, ILogSystem::EpochTagsVersionsInfo(old.logRouterTags, old.epochBegin, old.epochEnd) });
TraceEvent("OldEpochTagsVersions", dbgid)
.detail("Epoch", old.epoch)
.detail("Tags", old.logRouterTags)
.detail("BeginVersion", old.epochBegin)
.detail("EndVersion", old.epochEnd);
}
return epochInfos;
}
inline Reference<LogSet> TagPartitionedLogSystem::getEpochLogSet(LogEpoch epoch) const {
for (const auto& old : oldLogData) {
if (epoch == old.epoch)
return old.tLogs[0];
}
return Reference<LogSet>(nullptr);
}
void TagPartitionedLogSystem::setBackupWorkers(const std::vector<InitializeBackupReply>& replies) {
ASSERT(tLogs.size() > 0);
Reference<LogSet> logset = tLogs[0]; // Master recruits this epoch's worker first.
LogEpoch logsetEpoch = this->epoch;
oldestBackupEpoch = this->epoch;
for (const auto& reply : replies) {
if (removedBackupWorkers.count(reply.interf.id()) > 0) {
removedBackupWorkers.erase(reply.interf.id());
continue;
}
auto worker = makeReference<AsyncVar<OptionalInterface<BackupInterface>>>(
OptionalInterface<BackupInterface>(reply.interf));
if (reply.backupEpoch != logsetEpoch) {
// find the logset from oldLogData
logsetEpoch = reply.backupEpoch;
oldestBackupEpoch = std::min(oldestBackupEpoch, logsetEpoch);
logset = getEpochLogSet(logsetEpoch);
ASSERT(logset.isValid());
}
logset->backupWorkers.push_back(worker);
TraceEvent("AddBackupWorker", dbgid).detail("Epoch", logsetEpoch).detail("BackupWorkerID", reply.interf.id());
}
TraceEvent("SetOldestBackupEpoch", dbgid).detail("Epoch", oldestBackupEpoch);
backupWorkerChanged.trigger();
}
bool TagPartitionedLogSystem::removeBackupWorker(const BackupWorkerDoneRequest& req) {
bool removed = false;
Reference<LogSet> logset = getEpochLogSet(req.backupEpoch);
if (logset.isValid()) {
for (auto it = logset->backupWorkers.begin(); it != logset->backupWorkers.end(); it++) {
if (it->getPtr()->get().interf().id() == req.workerUID) {
logset->backupWorkers.erase(it);
removed = true;
break;
}
}
}
if (removed) {
oldestBackupEpoch = epoch;
for (const auto& old : oldLogData) {
if (old.epoch < oldestBackupEpoch && old.tLogs[0]->backupWorkers.size() > 0) {
oldestBackupEpoch = old.epoch;
}
}
backupWorkerChanged.trigger();
} else {
removedBackupWorkers.insert(req.workerUID);
}
TraceEvent("RemoveBackupWorker", dbgid)
.detail("Removed", removed)
.detail("BackupEpoch", req.backupEpoch)
.detail("WorkerID", req.workerUID)
.detail("OldestBackupEpoch", oldestBackupEpoch);
return removed;
}
LogEpoch TagPartitionedLogSystem::getOldestBackupEpoch() const {
return oldestBackupEpoch;
}
void TagPartitionedLogSystem::setOldestBackupEpoch(LogEpoch epoch) {
oldestBackupEpoch = epoch;
backupWorkerChanged.trigger();
}
ACTOR Future<Void> TagPartitionedLogSystem::monitorLog(Reference<AsyncVar<OptionalInterface<TLogInterface>>> logServer,
Reference<AsyncVar<bool>> failed) {
state Future<Void> waitFailure;
loop {
if (logServer->get().present())
waitFailure = waitFailureTracker(logServer->get().interf().waitFailure, failed);
else
failed->set(true);
wait(logServer->onChange());
}
}
Optional<std::tuple<Version, Version, std::vector<TLogLockResult>>> TagPartitionedLogSystem::getDurableVersion(
UID dbgid,
LogLockInfo lockInfo,
std::vector<Reference<AsyncVar<bool>>> failed,
Optional<Version> lastEnd) {
Reference<LogSet> logSet = lockInfo.logSet;
// To ensure consistent recovery, the number of servers NOT in the write quorum plus the number of servers NOT
// in the read quorum have to be strictly less than the replication factor. Otherwise there could be a replica
// set consistent entirely of servers that are out of date due to not being in the write quorum or unavailable
// due to not being in the read quorum. So with N = # of tlogs, W = antiquorum, R = required count, F =
// replication factor, W + (N - R) < F, and optimally (N-W)+(N-R)=F-1. Thus R=N+1-F+W.
int requiredCount =
(int)logSet->logServers.size() + 1 - logSet->tLogReplicationFactor + logSet->tLogWriteAntiQuorum;
ASSERT(requiredCount > 0 && requiredCount <= logSet->logServers.size());
ASSERT(logSet->tLogReplicationFactor >= 1 && logSet->tLogReplicationFactor <= logSet->logServers.size());
ASSERT(logSet->tLogWriteAntiQuorum >= 0 && logSet->tLogWriteAntiQuorum < logSet->logServers.size());
std::vector<LocalityData> availableItems, badCombo;
std::vector<TLogLockResult> results;
std::string sServerState;
LocalityGroup unResponsiveSet;
for (int t = 0; t < logSet->logServers.size(); t++) {
if (lockInfo.replies[t].isReady() && !lockInfo.replies[t].isError() && (!failed.size() || !failed[t]->get())) {
results.push_back(lockInfo.replies[t].get());
availableItems.push_back(logSet->tLogLocalities[t]);
sServerState += 'a';
} else {
unResponsiveSet.add(logSet->tLogLocalities[t]);
sServerState += 'f';
}
}
// Check if the list of results is not larger than the anti quorum
bool bTooManyFailures = (results.size() <= logSet->tLogWriteAntiQuorum);
// Check if failed logs complete the policy
bTooManyFailures = bTooManyFailures || ((unResponsiveSet.size() >= logSet->tLogReplicationFactor) &&
(unResponsiveSet.validate(logSet->tLogPolicy)));
// Check all combinations of the AntiQuorum within the failed
if (!bTooManyFailures && (logSet->tLogWriteAntiQuorum) &&
(!validateAllCombinations(
badCombo, unResponsiveSet, logSet->tLogPolicy, availableItems, logSet->tLogWriteAntiQuorum, false))) {
TraceEvent("EpochEndBadCombo", dbgid)
.detail("Required", requiredCount)
.detail("Present", results.size())
.detail("ServerState", sServerState);
bTooManyFailures = true;
}
ASSERT(logSet->logServers.size() == lockInfo.replies.size());
if (!bTooManyFailures) {
std::sort(results.begin(), results.end(), [](const TLogLockResult& a, const TLogLockResult& b) -> bool {
return a.end < b.end;
});
int absent = logSet->logServers.size() - results.size();
int safe_range_begin = logSet->tLogWriteAntiQuorum;
int new_safe_range_begin = std::min(logSet->tLogWriteAntiQuorum, (int)(results.size() - 1));
int safe_range_end = logSet->tLogReplicationFactor - absent;
if (!lastEnd.present() || ((safe_range_end > 0) && (safe_range_end - 1 < results.size()) &&
results[safe_range_end - 1].end < lastEnd.get())) {
Version knownCommittedVersion = 0;
for (int i = 0; i < results.size(); i++) {
knownCommittedVersion = std::max(knownCommittedVersion, results[i].knownCommittedVersion);
}
if (knownCommittedVersion > results[new_safe_range_begin].end) {
knownCommittedVersion = results[new_safe_range_begin].end;
}
TraceEvent("GetDurableResult", dbgid)
.detail("Required", requiredCount)
.detail("Present", results.size())
.detail("Anti", logSet->tLogWriteAntiQuorum)
.detail("ServerState", sServerState)
.detail("RecoveryVersion",
((safe_range_end > 0) && (safe_range_end - 1 < results.size()))
? results[safe_range_end - 1].end
: -1)
.detail("EndVersion", results[new_safe_range_begin].end)
.detail("SafeBegin", safe_range_begin)
.detail("SafeEnd", safe_range_end)
.detail("NewSafeBegin", new_safe_range_begin)
.detail("KnownCommittedVersion", knownCommittedVersion)
.detail("EpochEnd", lockInfo.epochEnd);
return std::make_tuple(knownCommittedVersion, results[new_safe_range_begin].end, results);
}
}
TraceEvent("GetDurableResultWaiting", dbgid)
.detail("Required", requiredCount)
.detail("Present", results.size())
.detail("ServerState", sServerState);
return Optional<std::tuple<Version, Version, std::vector<TLogLockResult>>>();
}
ACTOR Future<Void> TagPartitionedLogSystem::getDurableVersionChanged(LogLockInfo lockInfo,
std::vector<Reference<AsyncVar<bool>>> failed) {
// Wait for anything relevant to change
std::vector<Future<Void>> changes;
for (int j = 0; j < lockInfo.logSet->logServers.size(); j++) {
if (!lockInfo.replies[j].isReady())
changes.push_back(ready(lockInfo.replies[j]));
else {
changes.push_back(lockInfo.logSet->logServers[j]->onChange());
if (failed.size()) {
changes.push_back(failed[j]->onChange());
}
}
}
ASSERT(changes.size());
wait(waitForAny(changes));
return Void();
}
// If VERSION_VECTOR_UNICAST is enabled, one tLog's DV may advance beyond the min(DV) over all tLogs.
// This function finds the highest recoverable version for each tLog group over all log groups.
// All prior versions to the chosen RV must also be recoverable.
// TODO: unit tests to stress UNICAST
Version getRecoverVersionUnicast(std::vector<std::tuple<int, std::vector<TLogLockResult>>>& logGroupResults,
Version minEnd) {
Version minLogGroup = std::numeric_limits<Version>::max();
for (auto& logGroupResult : logGroupResults) {
std::unordered_map<Version, int> versionRepCount;
std::map<Version, int> versionTLogCount;
int replicationFactor = std::get<0>(logGroupResult);
for (auto& tLogResult : std::get<1>(logGroupResult)) {
bool logGroupCandidate = false;
for (auto& unknownCommittedVersion : tLogResult.unknownCommittedVersions) {
Version k = std::get<0>(unknownCommittedVersion);
if (k > minEnd) {
versionRepCount[k]++;
versionTLogCount[k] = std::get<1>(unknownCommittedVersion);
logGroupCandidate = true;
}
}
if (!logGroupCandidate) {
return minEnd;
}
}
Version minTLogs = minEnd;
for (auto const& [version, tLogCount] : versionTLogCount) {
if (versionRepCount[version] >= tLogCount - replicationFactor + 1) {
minTLogs = version;
} else {
break;
}
}
minLogGroup = std::min(minLogGroup, minTLogs);
}
return minLogGroup;
}
ACTOR Future<Void> TagPartitionedLogSystem::epochEnd(Reference<AsyncVar<Reference<ILogSystem>>> outLogSystem,
UID dbgid,
DBCoreState prevState,
FutureStream<TLogRejoinRequest> rejoinRequests,
LocalityData locality,
bool* forceRecovery) {
// Stops a co-quorum of tlogs so that no further versions can be committed until the DBCoreState coordination
// state is changed Creates a new logSystem representing the (now frozen) epoch No other important side effects.
// The writeQuorum in the master info is from the previous configuration
if (!prevState.tLogs.size()) {
// This is a brand new database
auto logSystem = makeReference<TagPartitionedLogSystem>(dbgid, locality, 0);
logSystem->logSystemType = prevState.logSystemType;
logSystem->recoverAt = 0;
logSystem->knownCommittedVersion = 0;
logSystem->stopped = true;
outLogSystem->set(logSystem);
wait(Future<Void>(Never()));
throw internal_error();
}
if (*forceRecovery) {
DBCoreState modifiedState = prevState;
int8_t primaryLocality = -1;
for (auto& coreSet : modifiedState.tLogs) {
if (coreSet.isLocal && coreSet.locality >= 0 && coreSet.tLogLocalities[0].dcId() != locality.dcId()) {
primaryLocality = coreSet.locality;
break;
}
}
bool foundRemote = false;
int8_t remoteLocality = -1;
int modifiedLogSets = 0;
int removedLogSets = 0;
if (primaryLocality >= 0) {
auto copiedLogs = modifiedState.tLogs;
for (auto& coreSet : copiedLogs) {
if (coreSet.locality != primaryLocality && coreSet.locality >= 0) {
foundRemote = true;
remoteLocality = coreSet.locality;
modifiedState.tLogs.clear();
modifiedState.tLogs.push_back(coreSet);
modifiedState.tLogs[0].isLocal = true;
modifiedState.logRouterTags = 0;
modifiedLogSets++;
break;
}
}
while (!foundRemote && modifiedState.oldTLogData.size()) {
for (auto& coreSet : modifiedState.oldTLogData[0].tLogs) {
if (coreSet.locality != primaryLocality && coreSet.locality >= tagLocalitySpecial) {
foundRemote = true;
remoteLocality = coreSet.locality;
modifiedState.tLogs.clear();
modifiedState.tLogs.push_back(coreSet);
modifiedState.tLogs[0].isLocal = true;
modifiedState.logRouterTags = 0;
modifiedState.txsTags = modifiedState.oldTLogData[0].txsTags;
modifiedLogSets++;
break;
}
}
modifiedState.oldTLogData.erase(modifiedState.oldTLogData.begin());
removedLogSets++;
}
if (foundRemote) {
for (int i = 0; i < modifiedState.oldTLogData.size(); i++) {
bool found = false;
auto copiedLogs = modifiedState.oldTLogData[i].tLogs;
for (auto& coreSet : copiedLogs) {
if (coreSet.locality == remoteLocality || coreSet.locality == tagLocalitySpecial) {
found = true;
if (!coreSet.isLocal || copiedLogs.size() > 1) {
modifiedState.oldTLogData[i].tLogs.clear();
modifiedState.oldTLogData[i].tLogs.push_back(coreSet);
modifiedState.oldTLogData[i].tLogs[0].isLocal = true;
modifiedState.oldTLogData[i].logRouterTags = 0;
modifiedState.oldTLogData[i].epochBegin =
modifiedState.oldTLogData[i].tLogs[0].startVersion;
modifiedState.oldTLogData[i].epochEnd =
(i == 0 ? modifiedState.tLogs[0].startVersion
: modifiedState.oldTLogData[i - 1].tLogs[0].startVersion);
modifiedLogSets++;
}
break;
}
}
if (!found) {
modifiedState.oldTLogData.erase(modifiedState.oldTLogData.begin() + i);
removedLogSets++;
i--;
}
}
prevState = modifiedState;
} else {
*forceRecovery = false;
}
} else {
*forceRecovery = false;
}
TraceEvent(SevWarnAlways, "ForcedRecovery", dbgid)
.detail("PrimaryLocality", primaryLocality)
.detail("RemoteLocality", remoteLocality)
.detail("FoundRemote", foundRemote)
.detail("Modified", modifiedLogSets)
.detail("Removed", removedLogSets);
for (int i = 0; i < prevState.tLogs.size(); i++) {
TraceEvent("ForcedRecoveryTLogs", dbgid)
.detail("I", i)
.detail("Log", ::describe(prevState.tLogs[i].tLogs))
.detail("Loc", prevState.tLogs[i].locality)
.detail("Txs", prevState.txsTags);
}
for (int i = 0; i < prevState.oldTLogData.size(); i++) {
for (int j = 0; j < prevState.oldTLogData[i].tLogs.size(); j++) {
TraceEvent("ForcedRecoveryTLogs", dbgid)
.detail("I", i)
.detail("J", j)
.detail("Log", ::describe(prevState.oldTLogData[i].tLogs[j].tLogs))
.detail("Loc", prevState.oldTLogData[i].tLogs[j].locality)
.detail("Txs", prevState.oldTLogData[i].txsTags);
}
}
}
TEST(true); // Master recovery from pre-existing database
// trackRejoins listens for rejoin requests from the tLogs that we are recovering from, to learn their
// TLogInterfaces
state std::vector<LogLockInfo> lockResults;
state std::vector<std::pair<Reference<AsyncVar<OptionalInterface<TLogInterface>>>, Reference<IReplicationPolicy>>>
allLogServers;
state std::vector<Reference<LogSet>> logServers;
state std::vector<OldLogData> oldLogData;
state std::vector<std::vector<Reference<AsyncVar<bool>>>> logFailed;
state std::vector<Future<Void>> failureTrackers;
for (const CoreTLogSet& coreSet : prevState.tLogs) {
logServers.push_back(makeReference<LogSet>(coreSet));
std::vector<Reference<AsyncVar<bool>>> failed;
for (const auto& logVar : logServers.back()->logServers) {
allLogServers.emplace_back(logVar, coreSet.tLogPolicy);
failed.push_back(makeReference<AsyncVar<bool>>());
failureTrackers.push_back(TagPartitionedLogSystem::monitorLog(logVar, failed.back()));
}
logFailed.push_back(failed);
}
for (const auto& oldTlogData : prevState.oldTLogData) {
oldLogData.emplace_back(oldTlogData);
for (const auto& logSet : oldLogData.back().tLogs) {
for (const auto& logVar : logSet->logServers) {
allLogServers.emplace_back(logVar, logSet->tLogPolicy);
}
}
}
state Future<Void> rejoins = TagPartitionedLogSystem::trackRejoins(dbgid, allLogServers, rejoinRequests);
lockResults.resize(logServers.size());
std::set<int8_t> lockedLocalities;
bool foundSpecial = false;
for (int i = 0; i < logServers.size(); i++) {
if (logServers[i]->locality == tagLocalitySpecial || logServers[i]->locality == tagLocalityUpgraded) {
foundSpecial = true;
}
lockedLocalities.insert(logServers[i]->locality);
lockResults[i].isCurrent = true;
lockResults[i].logSet = logServers[i];
for (int t = 0; t < logServers[i]->logServers.size(); t++) {
lockResults[i].replies.push_back(TagPartitionedLogSystem::lockTLog(dbgid, logServers[i]->logServers[t]));
}
}
for (auto& old : oldLogData) {
if (foundSpecial) {
break;
}
for (auto& log : old.tLogs) {
if (log->locality == tagLocalitySpecial || log->locality == tagLocalityUpgraded) {
foundSpecial = true;
break;
}
if (!lockedLocalities.count(log->locality)) {
TraceEvent("EpochEndLockExtra").detail("Locality", log->locality);
TEST(true); // locking old generations for version information
lockedLocalities.insert(log->locality);
LogLockInfo lockResult;
lockResult.epochEnd = old.epochEnd;
lockResult.logSet = log;
for (int t = 0; t < log->logServers.size(); t++) {
lockResult.replies.push_back(TagPartitionedLogSystem::lockTLog(dbgid, log->logServers[t]));
}
lockResults.push_back(lockResult);
}
}
}
if (*forceRecovery) {
state std::vector<LogLockInfo> allLockResults;
ASSERT(lockResults.size() == 1);
allLockResults.push_back(lockResults[0]);
for (auto& old : oldLogData) {
ASSERT(old.tLogs.size() == 1);
LogLockInfo lockResult;
lockResult.epochEnd = old.epochEnd;
lockResult.logSet = old.tLogs[0];
for (int t = 0; t < old.tLogs[0]->logServers.size(); t++) {
lockResult.replies.push_back(TagPartitionedLogSystem::lockTLog(dbgid, old.tLogs[0]->logServers[t]));
}
allLockResults.push_back(lockResult);
}
state int lockNum = 0;
state Version maxRecoveryVersion = 0;
state int maxRecoveryIndex = 0;
while (lockNum < allLockResults.size()) {
auto versions = TagPartitionedLogSystem::getDurableVersion(dbgid, allLockResults[lockNum]);
if (versions.present()) {
if (std::get<1>(versions.get()) > maxRecoveryVersion) {
TraceEvent("HigherRecoveryVersion", dbgid)
.detail("Idx", lockNum)
.detail("Ver", std::get<1>(versions.get()));
maxRecoveryVersion = std::get<1>(versions.get());
maxRecoveryIndex = lockNum;
}
lockNum++;
} else {
wait(TagPartitionedLogSystem::getDurableVersionChanged(allLockResults[lockNum]));
}
}
if (maxRecoveryIndex > 0) {
logServers = oldLogData[maxRecoveryIndex - 1].tLogs;
prevState.txsTags = oldLogData[maxRecoveryIndex - 1].txsTags;
lockResults[0] = allLockResults[maxRecoveryIndex];
lockResults[0].isCurrent = true;
std::vector<Reference<AsyncVar<bool>>> failed;
for (auto& log : logServers[0]->logServers) {
failed.push_back(makeReference<AsyncVar<bool>>());
failureTrackers.push_back(TagPartitionedLogSystem::monitorLog(log, failed.back()));
}
ASSERT(logFailed.size() == 1);
logFailed[0] = failed;
oldLogData.erase(oldLogData.begin(), oldLogData.begin() + maxRecoveryIndex);
}
}
state Optional<Version> lastEnd;
state Version knownCommittedVersion = 0;
loop {
Version minEnd = std::numeric_limits<Version>::max();
Version maxEnd = 0;
std::vector<Future<Void>> changes;
std::vector<std::tuple<int, std::vector<TLogLockResult>>> logGroupResults;
for (int log = 0; log < logServers.size(); log++) {
if (!logServers[log]->isLocal) {
continue;
}
auto versions =
TagPartitionedLogSystem::getDurableVersion(dbgid, lockResults[log], logFailed[log], lastEnd);
if (versions.present()) {
knownCommittedVersion = std::max(knownCommittedVersion, std::get<0>(versions.get()));
logGroupResults.emplace_back(logServers[log]->tLogReplicationFactor, std::get<2>(versions.get()));
maxEnd = std::max(maxEnd, std::get<1>(versions.get()));
minEnd = std::min(minEnd, std::get<1>(versions.get()));
}
changes.push_back(TagPartitionedLogSystem::getDurableVersionChanged(lockResults[log], logFailed[log]));
}
if (maxEnd > 0 && (!lastEnd.present() || maxEnd < lastEnd.get())) {
TEST(lastEnd.present()); // Restarting recovery at an earlier point
auto logSystem = makeReference<TagPartitionedLogSystem>(dbgid, locality, prevState.recoveryCount);
logSystem->recoverAt = minEnd;
if (SERVER_KNOBS->ENABLE_VERSION_VECTOR_TLOG_UNICAST) {
logSystem->recoverAt = getRecoverVersionUnicast(logGroupResults, minEnd);
TraceEvent("RecoveryVersionInfo").detail("RecoverAt", logSystem->recoverAt);
}
lastEnd = minEnd;
logSystem->tLogs = logServers;
logSystem->logRouterTags = prevState.logRouterTags;
logSystem->txsTags = prevState.txsTags;
logSystem->oldLogData = oldLogData;
logSystem->logSystemType = prevState.logSystemType;
logSystem->rejoins = rejoins;
logSystem->lockResults = lockResults;
if (knownCommittedVersion > minEnd) {
knownCommittedVersion = minEnd;
}
logSystem->knownCommittedVersion = knownCommittedVersion;
TraceEvent(SevDebug, "FinalRecoveryVersionInfo")
.detail("KCV", knownCommittedVersion)
.detail("MinEnd", minEnd);
logSystem->remoteLogsWrittenToCoreState = true;
logSystem->stopped = true;
logSystem->pseudoLocalities = prevState.pseudoLocalities;
outLogSystem->set(logSystem);
}
wait(waitForAny(changes));
}
}
ACTOR Future<Void> TagPartitionedLogSystem::recruitOldLogRouters(TagPartitionedLogSystem* self,
std::vector<WorkerInterface> workers,
LogEpoch recoveryCount,
int8_t locality,
Version startVersion,
std::vector<LocalityData> tLogLocalities,
Reference<IReplicationPolicy> tLogPolicy,
bool forRemote) {
state std::vector<std::vector<Future<TLogInterface>>> logRouterInitializationReplies;
state std::vector<Future<TLogInterface>> allReplies;
int nextRouter = 0;
state Version lastStart = std::numeric_limits<Version>::max();
if (!forRemote) {
Version maxStart = TagPartitionedLogSystem::getMaxLocalStartVersion(self->tLogs);
lastStart = std::max(startVersion, maxStart);
if (self->logRouterTags == 0) {
ASSERT_WE_THINK(false);
self->logSystemConfigChanged.trigger();
return Void();
}
bool found = false;
for (auto& tLogs : self->tLogs) {
if (tLogs->locality == locality) {
found = true;
}
tLogs->logRouters.clear();
}
if (!found) {
TraceEvent("RecruitingOldLogRoutersAddingLocality")
.detail("Locality", locality)
.detail("LastStart", lastStart);
auto newLogSet = makeReference<LogSet>();
newLogSet->locality = locality;
newLogSet->startVersion = lastStart;
newLogSet->isLocal = false;
self->tLogs.push_back(newLogSet);
}
for (auto& tLogs : self->tLogs) {
// Recruit log routers for old generations of the primary locality
if (tLogs->locality == locality) {
logRouterInitializationReplies.emplace_back();
for (int i = 0; i < self->logRouterTags; i++) {
InitializeLogRouterRequest req;
req.recoveryCount = recoveryCount;
req.routerTag = Tag(tagLocalityLogRouter, i);
req.startVersion = lastStart;
req.tLogLocalities = tLogLocalities;
req.tLogPolicy = tLogPolicy;
req.locality = locality;
auto reply = transformErrors(
throwErrorOr(workers[nextRouter].logRouter.getReplyUnlessFailedFor(
req, SERVER_KNOBS->TLOG_TIMEOUT, SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed());
logRouterInitializationReplies.back().push_back(reply);
allReplies.push_back(reply);
nextRouter = (nextRouter + 1) % workers.size();
}
}
}
}
for (auto& old : self->oldLogData) {
Version maxStart = TagPartitionedLogSystem::getMaxLocalStartVersion(old.tLogs);
if (old.logRouterTags == 0 || maxStart >= lastStart) {
break;
}
lastStart = std::max(startVersion, maxStart);
bool found = false;
for (auto& tLogs : old.tLogs) {
if (tLogs->locality == locality) {
found = true;
}
tLogs->logRouters.clear();
}
if (!found) {
TraceEvent("RecruitingOldLogRoutersAddingLocality")
.detail("Locality", locality)
.detail("LastStart", lastStart);
auto newLogSet = makeReference<LogSet>();
newLogSet->locality = locality;
newLogSet->startVersion = lastStart;
old.tLogs.push_back(newLogSet);
}
for (auto& tLogs : old.tLogs) {
// Recruit log routers for old generations of the primary locality
if (tLogs->locality == locality) {
logRouterInitializationReplies.emplace_back();
for (int i = 0; i < old.logRouterTags; i++) {
InitializeLogRouterRequest req;
req.recoveryCount = recoveryCount;
req.routerTag = Tag(tagLocalityLogRouter, i);
req.startVersion = lastStart;
req.tLogLocalities = tLogLocalities;
req.tLogPolicy = tLogPolicy;
req.locality = locality;
auto reply = transformErrors(
throwErrorOr(workers[nextRouter].logRouter.getReplyUnlessFailedFor(
req, SERVER_KNOBS->TLOG_TIMEOUT, SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed());
logRouterInitializationReplies.back().push_back(reply);
allReplies.push_back(reply);
nextRouter = (nextRouter + 1) % workers.size();
}
}
}
}
wait(waitForAll(allReplies));
int nextReplies = 0;
lastStart = std::numeric_limits<Version>::max();
std::vector<Future<Void>> failed;
if (!forRemote) {
Version maxStart = TagPartitionedLogSystem::getMaxLocalStartVersion(self->tLogs);
lastStart = std::max(startVersion, maxStart);
for (auto& tLogs : self->tLogs) {
if (tLogs->locality == locality) {
for (int i = 0; i < logRouterInitializationReplies[nextReplies].size(); i++) {
tLogs->logRouters.push_back(makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(
OptionalInterface<TLogInterface>(logRouterInitializationReplies[nextReplies][i].get())));
failed.push_back(
waitFailureClient(logRouterInitializationReplies[nextReplies][i].get().waitFailure,
SERVER_KNOBS->TLOG_TIMEOUT,
-SERVER_KNOBS->TLOG_TIMEOUT / SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
}
nextReplies++;
}
}
}
for (auto& old : self->oldLogData) {
Version maxStart = TagPartitionedLogSystem::getMaxLocalStartVersion(old.tLogs);
if (old.logRouterTags == 0 || maxStart >= lastStart) {
break;
}
lastStart = std::max(startVersion, maxStart);
for (auto& tLogs : old.tLogs) {
if (tLogs->locality == locality) {
for (int i = 0; i < logRouterInitializationReplies[nextReplies].size(); i++) {
tLogs->logRouters.push_back(makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(
OptionalInterface<TLogInterface>(logRouterInitializationReplies[nextReplies][i].get())));
if (!forRemote) {
failed.push_back(waitFailureClient(
logRouterInitializationReplies[nextReplies][i].get().waitFailure,
SERVER_KNOBS->TLOG_TIMEOUT,
-SERVER_KNOBS->TLOG_TIMEOUT / SERVER_KNOBS->SECONDS_BEFORE_NO_FAILURE_DELAY,
/*trace=*/true));
}
}
nextReplies++;
}
}
}
if (!forRemote) {
self->logSystemConfigChanged.trigger();
wait(failed.size() ? tagError<Void>(quorum(failed, 1), tlog_failed()) : Future<Void>(Never()));
throw internal_error();
}
return Void();
}
Version TagPartitionedLogSystem::getMaxLocalStartVersion(const std::vector<Reference<LogSet>>& tLogs) {
Version maxStart = 0;
for (const auto& logSet : tLogs) {
if (logSet->isLocal) {
maxStart = std::max(maxStart, logSet->startVersion);
}
}
return maxStart;
}
std::vector<Tag> TagPartitionedLogSystem::getLocalTags(int8_t locality, const std::vector<Tag>& allTags) {
std::vector<Tag> localTags;
for (const auto& tag : allTags) {
if (locality == tagLocalitySpecial || locality == tag.locality || tag.locality < 0) {
localTags.push_back(tag);
}
}
return localTags;
}
ACTOR Future<Void> TagPartitionedLogSystem::newRemoteEpoch(TagPartitionedLogSystem* self,
Reference<TagPartitionedLogSystem> oldLogSystem,
Future<RecruitRemoteFromConfigurationReply> fRemoteWorkers,
UID clusterId,
DatabaseConfiguration configuration,
LogEpoch recoveryCount,
int8_t remoteLocality,
std::vector<Tag> allTags) {
TraceEvent("RemoteLogRecruitment_WaitingForWorkers").log();
state RecruitRemoteFromConfigurationReply remoteWorkers = wait(fRemoteWorkers);
state Reference<LogSet> logSet(new LogSet());
logSet->tLogReplicationFactor = configuration.getRemoteTLogReplicationFactor();
logSet->tLogVersion = configuration.tLogVersion;
logSet->tLogPolicy = configuration.getRemoteTLogPolicy();
logSet->isLocal = false;
logSet->locality = remoteLocality;
logSet->startVersion = oldLogSystem->knownCommittedVersion + 1;
state int lockNum = 0;
while (lockNum < oldLogSystem->lockResults.size()) {
if (oldLogSystem->lockResults[lockNum].logSet->locality == remoteLocality) {
loop {
auto versions =
TagPartitionedLogSystem::getDurableVersion(self->dbgid, oldLogSystem->lockResults[lockNum]);
if (versions.present()) {
logSet->startVersion =
std::min(std::min(std::get<0>(versions.get()) + 1, oldLogSystem->lockResults[lockNum].epochEnd),
logSet->startVersion);
break;
}
wait(TagPartitionedLogSystem::getDurableVersionChanged(oldLogSystem->lockResults[lockNum]));
}
break;
}
lockNum++;
}
std::vector<LocalityData> localities;
localities.resize(remoteWorkers.remoteTLogs.size());
for (int i = 0; i < remoteWorkers.remoteTLogs.size(); i++) {
localities[i] = remoteWorkers.remoteTLogs[i].locality;
}
state Future<Void> oldRouterRecruitment = Void();
if (logSet->startVersion < oldLogSystem->knownCommittedVersion + 1) {
ASSERT(oldLogSystem->logRouterTags > 0);
oldRouterRecruitment = TagPartitionedLogSystem::recruitOldLogRouters(self,
remoteWorkers.logRouters,
recoveryCount,
remoteLocality,
logSet->startVersion,
localities,
logSet->tLogPolicy,
true);
}
state std::vector<Future<TLogInterface>> logRouterInitializationReplies;
const Version startVersion = oldLogSystem->logRouterTags == 0
? oldLogSystem->recoverAt.get() + 1
: std::max(self->tLogs[0]->startVersion, logSet->startVersion);
for (int i = 0; i < self->logRouterTags; i++) {
InitializeLogRouterRequest req;
req.recoveryCount = recoveryCount;
req.routerTag = Tag(tagLocalityLogRouter, i);
req.startVersion = startVersion;
req.tLogLocalities = localities;
req.tLogPolicy = logSet->tLogPolicy;
req.locality = remoteLocality;
logRouterInitializationReplies.push_back(transformErrors(
throwErrorOr(
remoteWorkers.logRouters[i % remoteWorkers.logRouters.size()].logRouter.getReplyUnlessFailedFor(
req, SERVER_KNOBS->TLOG_TIMEOUT, SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
}
std::vector<Tag> localTags = TagPartitionedLogSystem::getLocalTags(remoteLocality, allTags);
LogSystemConfig oldLogSystemConfig = oldLogSystem->getLogSystemConfig();
logSet->tLogLocalities.resize(remoteWorkers.remoteTLogs.size());
logSet->logServers.resize(
remoteWorkers.remoteTLogs
.size()); // Dummy interfaces, so that logSystem->getPushLocations() below uses the correct size
logSet->updateLocalitySet(localities);
state std::vector<Future<TLogInterface>> remoteTLogInitializationReplies;
std::vector<InitializeTLogRequest> remoteTLogReqs(remoteWorkers.remoteTLogs.size());
bool nonShardedTxs = self->getTLogVersion() < TLogVersion::V4;
if (oldLogSystem->logRouterTags == 0) {
std::vector<int> locations;
for (Tag tag : localTags) {
locations.clear();
logSet->getPushLocations(VectorRef<Tag>(&tag, 1), locations, 0);
for (int loc : locations)
remoteTLogReqs[loc].recoverTags.push_back(tag);
}
if (oldLogSystem->tLogs.size()) {
int maxTxsTags = oldLogSystem->txsTags;
bool needsOldTxs = oldLogSystem->tLogs[0]->tLogVersion < TLogVersion::V4;
for (auto& it : oldLogSystem->oldLogData) {
maxTxsTags = std::max<int>(maxTxsTags, it.txsTags);
needsOldTxs = needsOldTxs || it.tLogs[0]->tLogVersion < TLogVersion::V4;
}
for (int i = needsOldTxs ? -1 : 0; i < maxTxsTags; i++) {
Tag tag = i == -1 ? txsTag : Tag(tagLocalityTxs, i);
Tag pushTag = (i == -1 || nonShardedTxs) ? txsTag : Tag(tagLocalityTxs, i % self->txsTags);
locations.clear();
logSet->getPushLocations(VectorRef<Tag>(&pushTag, 1), locations, 0);
for (int loc : locations)
remoteTLogReqs[loc].recoverTags.push_back(tag);
}
}
}
if (oldLogSystem->tLogs.size()) {
if (nonShardedTxs) {
localTags.push_back(txsTag);
} else {
for (int i = 0; i < self->txsTags; i++) {
localTags.push_back(Tag(tagLocalityTxs, i));
}
}
}
for (int i = 0; i < remoteWorkers.remoteTLogs.size(); i++) {
InitializeTLogRequest& req = remoteTLogReqs[i];
req.recruitmentID = self->recruitmentID;
req.logVersion = configuration.tLogVersion;
req.storeType = configuration.tLogDataStoreType;
req.spillType = configuration.tLogSpillType;
req.recoverFrom = oldLogSystemConfig;
req.recoverAt = oldLogSystem->recoverAt.get();
req.knownCommittedVersion = oldLogSystem->knownCommittedVersion;
req.epoch = recoveryCount;
req.remoteTag = Tag(tagLocalityRemoteLog, i);
req.locality = remoteLocality;
req.isPrimary = false;
req.allTags = localTags;
req.startVersion = logSet->startVersion;
req.logRouterTags = 0;
req.txsTags = self->txsTags;
req.clusterId = clusterId;
}
remoteTLogInitializationReplies.reserve(remoteWorkers.remoteTLogs.size());
for (int i = 0; i < remoteWorkers.remoteTLogs.size(); i++)
remoteTLogInitializationReplies.push_back(transformErrors(
throwErrorOr(remoteWorkers.remoteTLogs[i].tLog.getReplyUnlessFailedFor(
remoteTLogReqs[i], SERVER_KNOBS->TLOG_TIMEOUT, SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
TraceEvent("RemoteLogRecruitment_InitializingRemoteLogs")
.detail("StartVersion", logSet->startVersion)
.detail("LocalStart", self->tLogs[0]->startVersion)
.detail("LogRouterTags", self->logRouterTags);
wait(waitForAll(remoteTLogInitializationReplies) && waitForAll(logRouterInitializationReplies) &&
oldRouterRecruitment);
for (int i = 0; i < logRouterInitializationReplies.size(); i++) {
logSet->logRouters.push_back(makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(
OptionalInterface<TLogInterface>(logRouterInitializationReplies[i].get())));
}
for (int i = 0; i < remoteTLogInitializationReplies.size(); i++) {
logSet->logServers[i] = makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(
OptionalInterface<TLogInterface>(remoteTLogInitializationReplies[i].get()));
logSet->tLogLocalities[i] = remoteWorkers.remoteTLogs[i].locality;
}
filterLocalityDataForPolicy(logSet->tLogPolicy, &logSet->tLogLocalities);
std::vector<Future<Void>> recoveryComplete;
recoveryComplete.reserve(logSet->logServers.size());
for (int i = 0; i < logSet->logServers.size(); i++)
recoveryComplete.push_back(
transformErrors(throwErrorOr(logSet->logServers[i]->get().interf().recoveryFinished.getReplyUnlessFailedFor(
TLogRecoveryFinishedRequest(),
SERVER_KNOBS->TLOG_TIMEOUT,
SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
self->remoteRecoveryComplete = waitForAll(recoveryComplete);
self->tLogs.push_back(logSet);
TraceEvent("RemoteLogRecruitment_CompletingRecovery").log();
return Void();
}
ACTOR Future<Reference<ILogSystem>> TagPartitionedLogSystem::newEpoch(
Reference<TagPartitionedLogSystem> oldLogSystem,
RecruitFromConfigurationReply recr,
Future<RecruitRemoteFromConfigurationReply> fRemoteWorkers,
UID clusterId,
DatabaseConfiguration configuration,
LogEpoch recoveryCount,
int8_t primaryLocality,
int8_t remoteLocality,
std::vector<Tag> allTags,
Reference<AsyncVar<bool>> recruitmentStalled) {
state double startTime = now();
state Reference<TagPartitionedLogSystem> logSystem(
new TagPartitionedLogSystem(oldLogSystem->getDebugID(), oldLogSystem->locality, recoveryCount));
logSystem->logSystemType = LogSystemType::tagPartitioned;
logSystem->expectedLogSets = 1;
logSystem->recoveredAt = oldLogSystem->recoverAt;
logSystem->repopulateRegionAntiQuorum = configuration.repopulateRegionAntiQuorum;
logSystem->recruitmentID = deterministicRandom()->randomUniqueID();
logSystem->txsTags = configuration.tLogVersion >= TLogVersion::V4 ? recr.tLogs.size() : 0;
oldLogSystem->recruitmentID = logSystem->recruitmentID;
if (configuration.usableRegions > 1) {
logSystem->logRouterTags =
recr.tLogs.size() *
std::max<int>(1, configuration.desiredLogRouterCount / std::max<int>(1, recr.tLogs.size()));
logSystem->expectedLogSets++;
logSystem->addPseudoLocality(tagLocalityLogRouterMapped);
TraceEvent e("AddPseudoLocality", logSystem->getDebugID());
e.detail("Locality1", "LogRouterMapped");
if (configuration.backupWorkerEnabled) {
logSystem->addPseudoLocality(tagLocalityBackup);
e.detail("Locality2", "Backup");
}
} else if (configuration.backupWorkerEnabled) {
// Single region uses log router tag for backup workers.
logSystem->logRouterTags =
recr.tLogs.size() *
std::max<int>(1, configuration.desiredLogRouterCount / std::max<int>(1, recr.tLogs.size()));
logSystem->addPseudoLocality(tagLocalityBackup);
TraceEvent("AddPseudoLocality", logSystem->getDebugID()).detail("Locality", "Backup");
}
logSystem->tLogs.push_back(makeReference<LogSet>());
logSystem->tLogs[0]->tLogVersion = configuration.tLogVersion;
logSystem->tLogs[0]->tLogWriteAntiQuorum = configuration.tLogWriteAntiQuorum;
logSystem->tLogs[0]->tLogReplicationFactor = configuration.tLogReplicationFactor;
logSystem->tLogs[0]->tLogPolicy = configuration.tLogPolicy;
logSystem->tLogs[0]->isLocal = true;
logSystem->tLogs[0]->locality = primaryLocality;
state RegionInfo region = configuration.getRegion(recr.dcId);
state int maxTxsTags = oldLogSystem->txsTags;
state bool needsOldTxs = oldLogSystem->tLogs.size() && oldLogSystem->getTLogVersion() < TLogVersion::V4;
for (auto& it : oldLogSystem->oldLogData) {
maxTxsTags = std::max<int>(maxTxsTags, it.txsTags);
needsOldTxs = needsOldTxs || it.tLogs[0]->tLogVersion < TLogVersion::V4;
}
if (region.satelliteTLogReplicationFactor > 0 && configuration.usableRegions > 1) {
logSystem->tLogs.push_back(makeReference<LogSet>());
if (recr.satelliteFallback) {
logSystem->tLogs[1]->tLogWriteAntiQuorum = region.satelliteTLogWriteAntiQuorumFallback;
logSystem->tLogs[1]->tLogReplicationFactor = region.satelliteTLogReplicationFactorFallback;
logSystem->tLogs[1]->tLogPolicy = region.satelliteTLogPolicyFallback;
} else {
logSystem->tLogs[1]->tLogWriteAntiQuorum = region.satelliteTLogWriteAntiQuorum;
logSystem->tLogs[1]->tLogReplicationFactor = region.satelliteTLogReplicationFactor;
logSystem->tLogs[1]->tLogPolicy = region.satelliteTLogPolicy;
}
logSystem->tLogs[1]->isLocal = true;
logSystem->tLogs[1]->locality = tagLocalitySatellite;
logSystem->tLogs[1]->tLogVersion = configuration.tLogVersion;
logSystem->tLogs[1]->startVersion = oldLogSystem->knownCommittedVersion + 1;
logSystem->tLogs[1]->tLogLocalities.resize(recr.satelliteTLogs.size());
for (int i = 0; i < recr.satelliteTLogs.size(); i++) {
logSystem->tLogs[1]->tLogLocalities[i] = recr.satelliteTLogs[i].locality;
}
filterLocalityDataForPolicy(logSystem->tLogs[1]->tLogPolicy, &logSystem->tLogs[1]->tLogLocalities);
logSystem->tLogs[1]->logServers.resize(
recr.satelliteTLogs
.size()); // Dummy interfaces, so that logSystem->getPushLocations() below uses the correct size
logSystem->tLogs[1]->updateLocalitySet(logSystem->tLogs[1]->tLogLocalities);
logSystem->tLogs[1]->populateSatelliteTagLocations(
logSystem->logRouterTags, oldLogSystem->logRouterTags, logSystem->txsTags, maxTxsTags);
logSystem->expectedLogSets++;
}
if (oldLogSystem->tLogs.size()) {
logSystem->oldLogData.emplace_back();
logSystem->oldLogData[0].tLogs = oldLogSystem->tLogs;
logSystem->oldLogData[0].epochBegin = oldLogSystem->tLogs[0]->startVersion;
logSystem->oldLogData[0].epochEnd = oldLogSystem->knownCommittedVersion + 1;
logSystem->oldLogData[0].logRouterTags = oldLogSystem->logRouterTags;
logSystem->oldLogData[0].txsTags = oldLogSystem->txsTags;
logSystem->oldLogData[0].pseudoLocalities = oldLogSystem->pseudoLocalities;
logSystem->oldLogData[0].epoch = oldLogSystem->epoch;
}
logSystem->oldLogData.insert(
logSystem->oldLogData.end(), oldLogSystem->oldLogData.begin(), oldLogSystem->oldLogData.end());
logSystem->tLogs[0]->startVersion = oldLogSystem->knownCommittedVersion + 1;
logSystem->backupStartVersion = oldLogSystem->knownCommittedVersion + 1;
state int lockNum = 0;
while (lockNum < oldLogSystem->lockResults.size()) {
if (oldLogSystem->lockResults[lockNum].logSet->locality == primaryLocality) {
if (oldLogSystem->lockResults[lockNum].isCurrent && oldLogSystem->lockResults[lockNum].logSet->isLocal) {
break;
}
state Future<Void> stalledAfter = setAfter(recruitmentStalled, SERVER_KNOBS->MAX_RECOVERY_TIME, true);
loop {
auto versions =
TagPartitionedLogSystem::getDurableVersion(logSystem->dbgid, oldLogSystem->lockResults[lockNum]);
if (versions.present()) {
logSystem->tLogs[0]->startVersion =
std::min(std::min(std::get<0>(versions.get()) + 1, oldLogSystem->lockResults[lockNum].epochEnd),
logSystem->tLogs[0]->startVersion);
break;
}
wait(TagPartitionedLogSystem::getDurableVersionChanged(oldLogSystem->lockResults[lockNum]));
}
stalledAfter.cancel();
break;
}
lockNum++;
}
std::vector<LocalityData> localities;
localities.resize(recr.tLogs.size());
for (int i = 0; i < recr.tLogs.size(); i++) {
localities[i] = recr.tLogs[i].locality;
}
state Future<Void> oldRouterRecruitment = Never();
TraceEvent("NewEpochStartVersion", oldLogSystem->getDebugID())
.detail("StartVersion", logSystem->tLogs[0]->startVersion)
.detail("EpochEnd", oldLogSystem->knownCommittedVersion + 1)
.detail("Locality", primaryLocality)
.detail("OldLogRouterTags", oldLogSystem->logRouterTags);
if (oldLogSystem->logRouterTags > 0 ||
logSystem->tLogs[0]->startVersion < oldLogSystem->knownCommittedVersion + 1) {
oldRouterRecruitment = TagPartitionedLogSystem::recruitOldLogRouters(oldLogSystem.getPtr(),
recr.oldLogRouters,
recoveryCount,
primaryLocality,
logSystem->tLogs[0]->startVersion,
localities,
logSystem->tLogs[0]->tLogPolicy,
false);
if (oldLogSystem->knownCommittedVersion - logSystem->tLogs[0]->startVersion >
SERVER_KNOBS->MAX_RECOVERY_VERSIONS) {
// make sure we can recover in the other DC.
for (auto& lockResult : oldLogSystem->lockResults) {
if (lockResult.logSet->locality == remoteLocality) {
if (TagPartitionedLogSystem::getDurableVersion(logSystem->dbgid, lockResult).present()) {
recruitmentStalled->set(true);
}
}
}
}
} else {
oldLogSystem->logSystemConfigChanged.trigger();
}
std::vector<Tag> localTags = TagPartitionedLogSystem::getLocalTags(primaryLocality, allTags);
state LogSystemConfig oldLogSystemConfig = oldLogSystem->getLogSystemConfig();
state std::vector<Future<TLogInterface>> initializationReplies;
std::vector<InitializeTLogRequest> reqs(recr.tLogs.size());
logSystem->tLogs[0]->tLogLocalities.resize(recr.tLogs.size());
logSystem->tLogs[0]->logServers.resize(
recr.tLogs.size()); // Dummy interfaces, so that logSystem->getPushLocations() below uses the correct size
logSystem->tLogs[0]->updateLocalitySet(localities);
std::vector<int> locations;
for (Tag tag : localTags) {
locations.clear();
logSystem->tLogs[0]->getPushLocations(VectorRef<Tag>(&tag, 1), locations, 0);
for (int loc : locations)
reqs[loc].recoverTags.push_back(tag);
}
for (int i = 0; i < oldLogSystem->logRouterTags; i++) {
Tag tag = Tag(tagLocalityLogRouter, i);
reqs[logSystem->tLogs[0]->bestLocationFor(tag)].recoverTags.push_back(tag);
}
bool nonShardedTxs = logSystem->getTLogVersion() < TLogVersion::V4;
if (oldLogSystem->tLogs.size()) {
for (int i = needsOldTxs ? -1 : 0; i < maxTxsTags; i++) {
Tag tag = i == -1 ? txsTag : Tag(tagLocalityTxs, i);
Tag pushTag = (i == -1 || nonShardedTxs) ? txsTag : Tag(tagLocalityTxs, i % logSystem->txsTags);
locations.clear();
logSystem->tLogs[0]->getPushLocations(VectorRef<Tag>(&pushTag, 1), locations, 0);
for (int loc : locations)
reqs[loc].recoverTags.push_back(tag);
}
if (nonShardedTxs) {
localTags.push_back(txsTag);
} else {
for (int i = 0; i < logSystem->txsTags; i++) {
localTags.push_back(Tag(tagLocalityTxs, i));
}
}
}
for (int i = 0; i < recr.tLogs.size(); i++) {
InitializeTLogRequest& req = reqs[i];
req.recruitmentID = logSystem->recruitmentID;
req.logVersion = configuration.tLogVersion;
req.storeType = configuration.tLogDataStoreType;
req.spillType = configuration.tLogSpillType;
req.recoverFrom = oldLogSystemConfig;
req.recoverAt = oldLogSystem->recoverAt.get();
req.knownCommittedVersion = oldLogSystem->knownCommittedVersion;
req.epoch = recoveryCount;
req.locality = primaryLocality;
req.remoteTag = Tag(tagLocalityRemoteLog, i);
req.isPrimary = true;
req.allTags = localTags;
req.startVersion = logSystem->tLogs[0]->startVersion;
req.logRouterTags = logSystem->logRouterTags;
req.txsTags = logSystem->txsTags;
req.clusterId = clusterId;
}
initializationReplies.reserve(recr.tLogs.size());
for (int i = 0; i < recr.tLogs.size(); i++)
initializationReplies.push_back(transformErrors(
throwErrorOr(recr.tLogs[i].tLog.getReplyUnlessFailedFor(
reqs[i], SERVER_KNOBS->TLOG_TIMEOUT, SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
state std::vector<Future<Void>> recoveryComplete;
if (region.satelliteTLogReplicationFactor > 0 && configuration.usableRegions > 1) {
state std::vector<Future<TLogInterface>> satelliteInitializationReplies;
std::vector<InitializeTLogRequest> sreqs(recr.satelliteTLogs.size());
std::vector<Tag> satelliteTags;
if (logSystem->logRouterTags) {
for (int i = 0; i < oldLogSystem->logRouterTags; i++) {
Tag tag = Tag(tagLocalityLogRouter, i);
// Satellite logs will index a mutation with tagLocalityLogRouter with an id greater than
// the number of log routers as having an id mod the number of log routers. We thus need
// to make sure that if we're going from more log routers in the previous generation to
// less log routers in the newer one, that we map the log router tags onto satellites that
// are the preferred location for id%logRouterTags.
Tag pushLocation = Tag(tagLocalityLogRouter, i % logSystem->logRouterTags);
locations.clear();
logSystem->tLogs[1]->getPushLocations(VectorRef<Tag>(&pushLocation, 1), locations, 0);
for (int loc : locations)
sreqs[loc].recoverTags.push_back(tag);
}
}
if (oldLogSystem->tLogs.size()) {
for (int i = needsOldTxs ? -1 : 0; i < maxTxsTags; i++) {
Tag tag = i == -1 ? txsTag : Tag(tagLocalityTxs, i);
Tag pushTag = (i == -1 || nonShardedTxs) ? txsTag : Tag(tagLocalityTxs, i % logSystem->txsTags);
locations.clear();
logSystem->tLogs[1]->getPushLocations(VectorRef<Tag>(&pushTag, 1), locations, 0);
for (int loc : locations)
sreqs[loc].recoverTags.push_back(tag);
}
if (nonShardedTxs) {
satelliteTags.push_back(txsTag);
} else {
for (int i = 0; i < logSystem->txsTags; i++) {
satelliteTags.push_back(Tag(tagLocalityTxs, i));
}
}
}
for (int i = 0; i < recr.satelliteTLogs.size(); i++) {
InitializeTLogRequest& req = sreqs[i];
req.recruitmentID = logSystem->recruitmentID;
req.logVersion = configuration.tLogVersion;
req.storeType = configuration.tLogDataStoreType;
req.spillType = configuration.tLogSpillType;
req.recoverFrom = oldLogSystemConfig;
req.recoverAt = oldLogSystem->recoverAt.get();
req.knownCommittedVersion = oldLogSystem->knownCommittedVersion;
req.epoch = recoveryCount;
req.locality = tagLocalitySatellite;
req.remoteTag = Tag();
req.isPrimary = true;
req.allTags = satelliteTags;
req.startVersion = oldLogSystem->knownCommittedVersion + 1;
req.logRouterTags = logSystem->logRouterTags;
req.txsTags = logSystem->txsTags;
req.clusterId = clusterId;
}
satelliteInitializationReplies.reserve(recr.satelliteTLogs.size());
for (int i = 0; i < recr.satelliteTLogs.size(); i++)
satelliteInitializationReplies.push_back(transformErrors(
throwErrorOr(recr.satelliteTLogs[i].tLog.getReplyUnlessFailedFor(
sreqs[i], SERVER_KNOBS->TLOG_TIMEOUT, SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
wait(waitForAll(satelliteInitializationReplies) || oldRouterRecruitment);
for (int i = 0; i < satelliteInitializationReplies.size(); i++) {
logSystem->tLogs[1]->logServers[i] = makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(
OptionalInterface<TLogInterface>(satelliteInitializationReplies[i].get()));
}
for (int i = 0; i < logSystem->tLogs[1]->logServers.size(); i++)
recoveryComplete.push_back(transformErrors(
throwErrorOr(
logSystem->tLogs[1]->logServers[i]->get().interf().recoveryFinished.getReplyUnlessFailedFor(
TLogRecoveryFinishedRequest(),
SERVER_KNOBS->TLOG_TIMEOUT,
SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
}
wait(waitForAll(initializationReplies) || oldRouterRecruitment);
for (int i = 0; i < initializationReplies.size(); i++) {
logSystem->tLogs[0]->logServers[i] = makeReference<AsyncVar<OptionalInterface<TLogInterface>>>(
OptionalInterface<TLogInterface>(initializationReplies[i].get()));
logSystem->tLogs[0]->tLogLocalities[i] = recr.tLogs[i].locality;
}
filterLocalityDataForPolicy(logSystem->tLogs[0]->tLogPolicy, &logSystem->tLogs[0]->tLogLocalities);
// Don't force failure of recovery if it took us a long time to recover. This avoids multiple long running
// recoveries causing tests to timeout
if (BUGGIFY && now() - startTime < 300 && g_network->isSimulated() && g_simulator.speedUpSimulation)
throw cluster_recovery_failed();
for (int i = 0; i < logSystem->tLogs[0]->logServers.size(); i++)
recoveryComplete.push_back(transformErrors(
throwErrorOr(logSystem->tLogs[0]->logServers[i]->get().interf().recoveryFinished.getReplyUnlessFailedFor(
TLogRecoveryFinishedRequest(),
SERVER_KNOBS->TLOG_TIMEOUT,
SERVER_KNOBS->MASTER_FAILURE_SLOPE_DURING_RECOVERY)),
cluster_recovery_failed()));
logSystem->recoveryComplete = waitForAll(recoveryComplete);
if (configuration.usableRegions > 1) {
logSystem->hasRemoteServers = true;
logSystem->remoteRecovery = TagPartitionedLogSystem::newRemoteEpoch(logSystem.getPtr(),
oldLogSystem,
fRemoteWorkers,
clusterId,
configuration,
recoveryCount,
remoteLocality,
allTags);
if (oldLogSystem->tLogs.size() > 0 && oldLogSystem->tLogs[0]->locality == tagLocalitySpecial) {
// The wait is required so that we know both primary logs and remote logs have copied the data between
// the known committed version and the recovery version.
// FIXME: we can remove this wait once we are able to have log routers which can ship data to the remote
// logs without using log router tags.
wait(logSystem->remoteRecovery);
}
} else {
logSystem->hasRemoteServers = false;
logSystem->remoteRecovery = logSystem->recoveryComplete;
logSystem->remoteRecoveryComplete = logSystem->recoveryComplete;
}
return logSystem;
}
ACTOR Future<Void> TagPartitionedLogSystem::trackRejoins(
UID dbgid,
std::vector<std::pair<Reference<AsyncVar<OptionalInterface<TLogInterface>>>, Reference<IReplicationPolicy>>>
logServers,
FutureStream<struct TLogRejoinRequest> rejoinRequests) {
state std::map<UID, ReplyPromise<TLogRejoinReply>> lastReply;
state std::set<UID> logsWaiting;
state double startTime = now();
state Future<Void> warnTimeout = delay(SERVER_KNOBS->TLOG_SLOW_REJOIN_WARN_TIMEOUT_SECS);
for (const auto& log : logServers) {
logsWaiting.insert(log.first->get().id());
}
try {
loop choose {
when(TLogRejoinRequest req = waitNext(rejoinRequests)) {
int pos = -1;
for (int i = 0; i < logServers.size(); i++) {
if (logServers[i].first->get().id() == req.myInterface.id()) {
pos = i;
logsWaiting.erase(logServers[i].first->get().id());
break;
}
}
if (pos != -1) {
TraceEvent("TLogJoinedMe", dbgid)
.detail("TLog", req.myInterface.id())
.detail("Address", req.myInterface.commit.getEndpoint().getPrimaryAddress().toString());
if (!logServers[pos].first->get().present() ||
req.myInterface.commit.getEndpoint() !=
logServers[pos].first->get().interf().commit.getEndpoint()) {
TLogInterface interf = req.myInterface;
filterLocalityDataForPolicyDcAndProcess(logServers[pos].second, &interf.filteredLocality);
logServers[pos].first->setUnconditional(OptionalInterface<TLogInterface>(interf));
}
lastReply[req.myInterface.id()].send(TLogRejoinReply{ false });
lastReply[req.myInterface.id()] = req.reply;
} else {
TraceEvent("TLogJoinedMeUnknown", dbgid)
.detail("TLog", req.myInterface.id())
.detail("Address", req.myInterface.commit.getEndpoint().getPrimaryAddress().toString());
req.reply.send(true);
}
}
when(wait(warnTimeout)) {
for (const auto& logId : logsWaiting) {
TraceEvent(SevWarnAlways, "TLogRejoinSlow", dbgid)
.detail("Elapsed", startTime - now())
.detail("LogId", logId);
}
warnTimeout = Never();
}
}
} catch (...) {
for (auto it = lastReply.begin(); it != lastReply.end(); ++it)
it->second.send(TLogRejoinReply{ true });
throw;
}
}
ACTOR Future<TLogLockResult> TagPartitionedLogSystem::lockTLog(
UID myID,
Reference<AsyncVar<OptionalInterface<TLogInterface>>> tlog) {
TraceEvent("TLogLockStarted", myID).detail("TLog", tlog->get().id()).detail("InfPresent", tlog->get().present());
loop {
choose {
when(TLogLockResult data = wait(
tlog->get().present() ? brokenPromiseToNever(tlog->get().interf().lock.getReply<TLogLockResult>())
: Never())) {
TraceEvent("TLogLocked", myID).detail("TLog", tlog->get().id()).detail("End", data.end);
return data;
}
when(wait(tlog->onChange())) {}
}
}
}
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