469 lines
19 KiB
C++
469 lines
19 KiB
C++
/*
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* BackupToDBUpgrade.actor.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fdbrpc/simulator.h"
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#include "fdbclient/BackupAgent.actor.h"
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#include "fdbserver/workloads/workloads.actor.h"
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#include "fdbserver/workloads/BulkSetup.actor.h"
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#include "fdbclient/ManagementAPI.actor.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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//A workload which test the correctness of upgrading DR from 5.1 to 5.2
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struct BackupToDBUpgradeWorkload : TestWorkload {
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double backupAfter, stopDifferentialAfter;
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Key backupTag, restoreTag, backupPrefix, extraPrefix;
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int backupRangesCount, backupRangeLengthMax;
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Standalone<VectorRef<KeyRangeRef>> backupRanges;
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Database extraDB;
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BackupToDBUpgradeWorkload(WorkloadContext const& wcx) : TestWorkload(wcx) {
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backupAfter = getOption(options, LiteralStringRef("backupAfter"), deterministicRandom()->random01() * 10.0);
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backupPrefix = getOption(options, LiteralStringRef("backupPrefix"), StringRef());
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backupRangeLengthMax = getOption(options, LiteralStringRef("backupRangeLengthMax"), 1);
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stopDifferentialAfter = getOption(options, LiteralStringRef("stopDifferentialAfter"), 60.0);
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backupTag = getOption(options, LiteralStringRef("backupTag"), BackupAgentBase::getDefaultTag());
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restoreTag = getOption(options, LiteralStringRef("restoreTag"), LiteralStringRef("restore"));
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backupRangesCount = getOption(options, LiteralStringRef("backupRangesCount"), 5);
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extraPrefix = backupPrefix.withPrefix(LiteralStringRef("\xfe\xff\xfe"));
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backupPrefix = backupPrefix.withPrefix(LiteralStringRef("\xfe\xff\xff"));
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ASSERT(backupPrefix != StringRef());
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KeyRef beginRange;
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KeyRef endRange;
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if(backupRangesCount <= 0) {
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backupRanges.push_back_deep(backupRanges.arena(), KeyRangeRef(normalKeys.begin, std::min(backupPrefix, extraPrefix)));
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} else {
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// Add backup ranges
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for (int rangeLoop = 0; rangeLoop < backupRangesCount; rangeLoop++)
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{
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// Get a random range of a random sizes
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beginRange = KeyRef(backupRanges.arena(), deterministicRandom()->randomAlphaNumeric(deterministicRandom()->randomInt(1, backupRangeLengthMax + 1)));
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endRange = KeyRef(backupRanges.arena(), deterministicRandom()->randomAlphaNumeric(deterministicRandom()->randomInt(1, backupRangeLengthMax + 1)));
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// Add the range to the array
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backupRanges.push_back_deep(backupRanges.arena(), (beginRange < endRange) ? KeyRangeRef(beginRange, endRange) : KeyRangeRef(endRange, beginRange));
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// Track the added range
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TraceEvent("DRU_BackupRange").detail("RangeBegin", (beginRange < endRange) ? printable(beginRange) : printable(endRange))
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.detail("RangeEnd", (beginRange < endRange) ? printable(endRange) : printable(beginRange));
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}
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}
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Reference<ClusterConnectionFile> extraFile(new ClusterConnectionFile(*g_simulator.extraDB));
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extraDB = Database::createDatabase(extraFile, -1);
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TraceEvent("DRU_Start");
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}
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virtual std::string description() {
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return "BackupToDBUpgrade";
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}
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virtual Future<Void> setup(Database const& cx) {
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if (clientId != 0)
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return Void();
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return _setup(cx, this);
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}
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virtual Future<Void> start(Database const& cx) {
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if (clientId != 0)
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return Void();
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return _start(cx, this);
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}
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virtual Future<bool> check(Database const& cx) {
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return true;
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}
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virtual void getMetrics(vector<PerfMetric>& m) {
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}
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ACTOR static Future<Void> doBackup(BackupToDBUpgradeWorkload* self, DatabaseBackupAgent* backupAgent, Database cx, Key tag, Standalone<VectorRef<KeyRangeRef>> backupRanges) {
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try {
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state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(self->extraDB));
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loop{
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try {
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for (auto r : self->backupRanges) {
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if (!r.empty()) {
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auto targetRange = r.withPrefix(self->backupPrefix);
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printf("Clearing %s in destination\n", printable(targetRange).c_str());
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tr->addReadConflictRange(targetRange);
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tr->clear(targetRange);
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}
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}
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wait(backupAgent->submitBackup(tr, tag, backupRanges, false, self->backupPrefix, StringRef()));
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wait(tr->commit());
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break;
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} catch (Error &e) {
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wait(tr->onError(e));
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}
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}
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TraceEvent("DRU_DoBackupInDifferentialMode").detail("Tag", printable(tag));
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} catch (Error &e) {
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TraceEvent("DRU_DoBackupSubmitBackupError").error(e).detail("Tag", printable(tag));
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if (e.code() != error_code_backup_unneeded && e.code() != error_code_backup_duplicate) {
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throw e;
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}
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}
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wait(success( backupAgent->waitBackup(self->extraDB, tag, false) ));
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return Void();
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}
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ACTOR static Future<Void> checkData(Database cx, UID logUid, UID destUid, Key tag, DatabaseBackupAgent* backupAgent) {
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state Key backupAgentKey = uidPrefixKey(logRangesRange.begin, logUid);
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state Key backupLogValuesKey = uidPrefixKey(backupLogKeys.begin, destUid);
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state Key backupLatestVersionsPath = uidPrefixKey(backupLatestVersionsPrefix, destUid);
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state Key backupLatestVersionsKey = uidPrefixKey(backupLatestVersionsPath, logUid);
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state int displaySystemKeys = 0;
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ASSERT(destUid.isValid());
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// Ensure that there is no left over key within the backup subspace
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loop {
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state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(cx));
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TraceEvent("DRU_CheckLeftoverkeys").detail("BackupTag", printable(tag));
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try {
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tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
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// Check the left over tasks
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// We have to wait for the list to empty since an abort and get status
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// can leave extra tasks in the queue
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TraceEvent("DRU_CheckLeftovertasks").detail("BackupTag", printable(tag));
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state int64_t taskCount = wait( backupAgent->getTaskCount(tr) );
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state int waitCycles = 0;
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if ((taskCount) && false) {
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TraceEvent("DRU_EndingNonzeroTaskCount").detail("BackupTag", printable(tag)).detail("TaskCount", taskCount).detail("WaitCycles", waitCycles);
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printf("EndingNonZeroTasks: %ld\n", (long) taskCount);
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wait(TaskBucket::debugPrintRange(cx, LiteralStringRef("\xff"), StringRef()));
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}
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loop {
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waitCycles ++;
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TraceEvent("DRU_NonzeroTaskWait").detail("BackupTag", printable(tag)).detail("TaskCount", taskCount).detail("WaitCycles", waitCycles);
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printf("%.6f Wait #%4d for %lld tasks to end\n", now(), waitCycles, (long long) taskCount);
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wait(delay(20.0));
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tr = Reference<ReadYourWritesTransaction>(new ReadYourWritesTransaction(cx));
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int64_t _taskCount = wait( backupAgent->getTaskCount(tr) );
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taskCount = _taskCount;
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if (!taskCount) {
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break;
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}
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}
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if (taskCount) {
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displaySystemKeys ++;
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TraceEvent(SevError, "DRU_NonzeroTaskCount").detail("BackupTag", printable(tag)).detail("TaskCount", taskCount).detail("WaitCycles", waitCycles);
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printf("BackupCorrectnessLeftoverLogTasks: %ld\n", (long) taskCount);
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}
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Standalone<RangeResultRef> agentValues = wait(tr->getRange(KeyRange(KeyRangeRef(backupAgentKey, strinc(backupAgentKey))), 100));
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// Error if the system keyspace for the backup tag is not empty
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if (agentValues.size() > 0) {
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displaySystemKeys++;
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printf("BackupCorrectnessLeftoverMutationKeys: (%d) %s\n", agentValues.size(), printable(backupAgentKey).c_str());
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TraceEvent(SevError, "BackupCorrectnessLeftoverMutationKeys").detail("BackupTag", printable(tag))
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.detail("LeftoverKeys", agentValues.size()).detail("KeySpace", printable(backupAgentKey));
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for (auto & s : agentValues) {
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TraceEvent("DRU_LeftoverKey").detail("Key", printable(StringRef(s.key.toString()))).detail("Value", printable(StringRef(s.value.toString())));
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printf(" Key: %-50s Value: %s\n", printable(StringRef(s.key.toString())).c_str(), printable(StringRef(s.value.toString())).c_str());
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}
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}
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else {
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printf("No left over backup agent configuration keys\n");
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}
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Optional<Value> latestVersion = wait(tr->get(backupLatestVersionsKey));
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if (latestVersion.present()) {
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TraceEvent(SevError, "BackupCorrectnessLeftoverVersionKey").detail("BackupTag", printable(tag)).detail("Key", backupLatestVersionsKey.printable()).detail("Value", BinaryReader::fromStringRef<Version>(latestVersion.get(), Unversioned()));
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} else {
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printf("No left over backup version key\n");
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}
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Standalone<RangeResultRef> versions = wait(tr->getRange(KeyRange(KeyRangeRef(backupLatestVersionsPath, strinc(backupLatestVersionsPath))), 1));
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if (!versions.size()) {
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Standalone<RangeResultRef> logValues = wait(tr->getRange(KeyRange(KeyRangeRef(backupLogValuesKey, strinc(backupLogValuesKey))), 100));
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// Error if the log/mutation keyspace for the backup tag is not empty
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if (logValues.size() > 0) {
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displaySystemKeys++;
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printf("BackupCorrectnessLeftoverLogKeys: (%d) %s\n", logValues.size(), printable(backupLogValuesKey).c_str());
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TraceEvent(SevError, "BackupCorrectnessLeftoverLogKeys").detail("BackupTag", printable(tag))
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.detail("LeftoverKeys", logValues.size()).detail("KeySpace", printable(backupLogValuesKey)).detail("Version", decodeBKMutationLogKey(logValues[0].key).first);
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for (auto & s : logValues) {
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TraceEvent("DRU_LeftoverKey").detail("Key", printable(StringRef(s.key.toString()))).detail("Value", printable(StringRef(s.value.toString())));
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printf(" Key: %-50s Value: %s\n", printable(StringRef(s.key.toString())).c_str(), printable(StringRef(s.value.toString())).c_str());
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}
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}
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else {
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printf("No left over backup log keys\n");
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}
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}
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break;
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}
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catch (Error &e) {
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TraceEvent("DRU_CheckError").error(e);
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wait(tr->onError(e));
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}
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}
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if (displaySystemKeys) {
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wait(TaskBucket::debugPrintRange(cx, LiteralStringRef("\xff"), StringRef()));
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}
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return Void();
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}
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ACTOR static Future<Void> _setup(Database cx, BackupToDBUpgradeWorkload* self) {
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state DatabaseBackupAgent backupAgent(cx);
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try{
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wait(delay(self->backupAfter));
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TraceEvent("DRU_DoBackup").detail("Tag", printable(self->backupTag));
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state Future<Void> b = doBackup(self, &backupAgent, self->extraDB, self->backupTag, self->backupRanges);
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TraceEvent("DRU_DoBackupWait").detail("BackupTag", printable(self->backupTag));
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wait(b);
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TraceEvent("DRU_DoBackupWaitEnd").detail("BackupTag", printable(self->backupTag));
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}
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catch (Error& e) {
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TraceEvent(SevError, "BackupToDBUpgradeSetuEerror").error(e);
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throw;
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}
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return Void();
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}
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ACTOR static Future<Void> diffRanges(Standalone<VectorRef<KeyRangeRef>> ranges, StringRef backupPrefix, Database src, Database dest) {
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state int rangeIndex;
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for (rangeIndex = 0; rangeIndex < ranges.size(); ++rangeIndex) {
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state KeyRangeRef range = ranges[rangeIndex];
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state Key begin = range.begin;
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if(range.empty()) {
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continue;
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}
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loop {
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state Transaction tr(src);
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state Transaction tr2(dest);
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try {
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loop {
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tr.setOption(FDBTransactionOptions::LOCK_AWARE);
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tr2.setOption(FDBTransactionOptions::LOCK_AWARE);
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state Future<Standalone<RangeResultRef>> srcFuture = tr.getRange(KeyRangeRef(begin, range.end), 1000);
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state Future<Standalone<RangeResultRef>> bkpFuture = tr2.getRange(KeyRangeRef(begin, range.end).withPrefix(backupPrefix), 1000);
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wait(success(srcFuture) && success(bkpFuture));
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auto src = srcFuture.get().begin();
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auto bkp = bkpFuture.get().begin();
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while (src != srcFuture.get().end() && bkp != bkpFuture.get().end()) {
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KeyRef bkpKey = bkp->key.substr(backupPrefix.size());
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if (src->key != bkpKey && src->value != bkp->value) {
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TraceEvent(SevError, "MismatchKeyAndValue").detail("SrcKey", printable(src->key)).detail("SrcVal", printable(src->value)).detail("BkpKey", printable(bkpKey)).detail("BkpVal", printable(bkp->value));
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}
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else if (src->key != bkpKey) {
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TraceEvent(SevError, "MismatchKey").detail("SrcKey", printable(src->key)).detail("SrcVal", printable(src->value)).detail("BkpKey", printable(bkpKey)).detail("BkpVal", printable(bkp->value));
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}
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else if (src->value != bkp->value) {
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TraceEvent(SevError, "MismatchValue").detail("SrcKey", printable(src->key)).detail("SrcVal", printable(src->value)).detail("BkpKey", printable(bkpKey)).detail("BkpVal", printable(bkp->value));
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}
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begin = std::min(src->key, bkpKey);
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if (src->key == bkpKey) {
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++src;
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++bkp;
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}
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else if (src->key < bkpKey) {
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++src;
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}
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else {
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++bkp;
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}
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}
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while (src != srcFuture.get().end() && !bkpFuture.get().more) {
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TraceEvent(SevError, "MissingBkpKey").detail("SrcKey", printable(src->key)).detail("SrcVal", printable(src->value));
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begin = src->key;
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++src;
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}
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while (bkp != bkpFuture.get().end() && !srcFuture.get().more) {
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TraceEvent(SevError, "MissingSrcKey").detail("BkpKey", printable(bkp->key.substr(backupPrefix.size()))).detail("BkpVal", printable(bkp->value));
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begin = bkp->key;
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++bkp;
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}
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if (!srcFuture.get().more && !bkpFuture.get().more) {
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break;
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}
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begin = keyAfter(begin);
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}
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break;
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}
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catch (Error &e) {
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wait(tr.onError(e));
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}
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}
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}
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return Void();
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}
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ACTOR static Future<Void> _start(Database cx, BackupToDBUpgradeWorkload* self) {
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state DatabaseBackupAgent backupAgent(cx);
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state DatabaseBackupAgent restoreAgent(self->extraDB);
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state Standalone<VectorRef<KeyRangeRef>> prevBackupRanges;
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state UID logUid;
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state Version commitVersion;
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state Future<Void> stopDifferential = delay(self->stopDifferentialAfter);
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state Future<Void> waitUpgrade = backupAgent.waitUpgradeToLatestDrVersion(self->extraDB, self->backupTag);
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wait(success(stopDifferential) && success(waitUpgrade));
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TraceEvent("DRU_WaitDifferentialEnd").detail("Tag", printable(self->backupTag));
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try {
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// Get restore ranges before aborting
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state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(self->extraDB));
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loop {
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try {
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// Get backup ranges
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tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
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UID _logUid = wait(backupAgent.getLogUid(tr, self->backupTag));
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logUid = _logUid;
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Optional<Key> backupKeysPacked = wait(tr->get(backupAgent.config.get(BinaryWriter::toValue(logUid, Unversioned())).pack(BackupAgentBase::keyConfigBackupRanges)));
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ASSERT(backupKeysPacked.present());
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BinaryReader br(backupKeysPacked.get(), IncludeVersion());
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prevBackupRanges = Standalone<VectorRef<KeyRangeRef>>();
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br >> prevBackupRanges;
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wait( lockDatabase(tr, logUid) );
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tr->addWriteConflictRange(singleKeyRange(StringRef()));
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wait( tr->commit() );
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commitVersion = tr->getCommittedVersion();
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break;
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} catch( Error &e ) {
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wait( tr->onError(e) );
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}
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}
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TraceEvent("DRU_Locked").detail("LockedVersion", commitVersion);
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// Wait for the destination to apply mutations up to the lock commit before switching over.
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state ReadYourWritesTransaction versionCheckTr(self->extraDB);
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loop {
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try {
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versionCheckTr.setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
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versionCheckTr.setOption(FDBTransactionOptions::LOCK_AWARE);
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Optional<Value> v = wait(versionCheckTr.get(BinaryWriter::toValue(logUid, Unversioned()).withPrefix(applyMutationsBeginRange.begin)));
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TraceEvent("DRU_Applied").detail("AppliedVersion", v.present() ? BinaryReader::fromStringRef<Version>(v.get(), Unversioned()) : -1);
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if( v.present() && BinaryReader::fromStringRef<Version>(v.get(), Unversioned()) >= commitVersion)
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break;
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state Future<Void> versionWatch = versionCheckTr.watch(BinaryWriter::toValue(logUid, Unversioned()).withPrefix(applyMutationsBeginRange.begin));
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wait(versionCheckTr.commit());
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wait(versionWatch);
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versionCheckTr.reset();
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} catch( Error &e ) {
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wait(versionCheckTr.onError(e));
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}
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}
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TraceEvent("DRU_DiffRanges");
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wait( diffRanges(prevBackupRanges, self->backupPrefix, cx, self->extraDB ) );
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// abort backup
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TraceEvent("DRU_AbortBackup").detail("Tag", printable(self->backupTag));
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wait(backupAgent.abortBackup(self->extraDB, self->backupTag));
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wait( unlockDatabase(self->extraDB, logUid) );
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// restore database
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TraceEvent("DRU_PrepareRestore").detail("RestoreTag", printable(self->restoreTag));
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state Reference<ReadYourWritesTransaction> tr2(new ReadYourWritesTransaction(cx));
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loop{
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try{
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tr2->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
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tr2->setOption(FDBTransactionOptions::LOCK_AWARE);
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for (auto r : prevBackupRanges) {
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if(!r.empty()) {
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std::cout << "r: " << r.begin.printable() << " - " << r.end.printable() << std::endl;
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tr2->addReadConflictRange(r);
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tr2->clear(r);
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}
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}
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wait( tr2->commit() );
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break;
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} catch( Error &e ) {
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TraceEvent("DRU_RestoreSetupError").error(e, true);
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wait( tr2->onError(e) );
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}
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}
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state Standalone<VectorRef<KeyRangeRef>> restoreRanges;
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for (auto r : prevBackupRanges) {
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restoreRanges.push_back_deep(restoreRanges.arena(), KeyRangeRef( r.begin.withPrefix(self->backupPrefix), r.end.withPrefix(self->backupPrefix) ) );
|
|
}
|
|
|
|
// start restoring db
|
|
try {
|
|
TraceEvent("DRU_RestoreDb").detail("RestoreTag", printable(self->restoreTag));
|
|
wait(restoreAgent.submitBackup(cx, self->restoreTag, restoreRanges, true, StringRef(), self->backupPrefix));
|
|
}
|
|
catch (Error& e) {
|
|
TraceEvent("DRU_RestoreSubmitBackupError").error(e).detail("Tag", printable(self->restoreTag));
|
|
if (e.code() != error_code_backup_unneeded && e.code() != error_code_backup_duplicate)
|
|
throw;
|
|
}
|
|
|
|
wait(success(restoreAgent.waitBackup(cx, self->restoreTag)));
|
|
wait(restoreAgent.unlockBackup(cx, self->restoreTag));
|
|
wait(checkData(self->extraDB, logUid, logUid, self->backupTag, &backupAgent));
|
|
|
|
state UID restoreUid = wait(restoreAgent.getLogUid(cx, self->restoreTag));
|
|
wait(checkData(cx, restoreUid, restoreUid, self->restoreTag, &restoreAgent));
|
|
|
|
TraceEvent("DRU_Complete").detail("BackupTag", printable(self->backupTag));
|
|
|
|
if (g_simulator.drAgents == ISimulator::BackupToDB) {
|
|
g_simulator.drAgents = ISimulator::NoBackupAgents;
|
|
}
|
|
} catch (Error& e) {
|
|
TraceEvent(SevError, "BackupAndRestoreCorrectnessError").error(e);
|
|
throw;
|
|
}
|
|
|
|
return Void();
|
|
}
|
|
};
|
|
|
|
WorkloadFactory<BackupToDBUpgradeWorkload> BackupToDBUpgradeWorkloadFactory("BackupToDBUpgrade");
|