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foundationdb/fdbserver/workloads/BackupCorrectness.actor.cpp

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/*
* BackupCorrectness.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2018 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 "fdbrpc/simulator.h"
#include "fdbclient/BackupAgent.actor.h"
#include "fdbclient/BackupContainer.h"
#include "fdbserver/workloads/workloads.actor.h"
#include "fdbserver/workloads/BulkSetup.actor.h"
#include "flow/actorcompiler.h" // This must be the last #include.
//A workload which test the correctness of backup and restore process
struct BackupAndRestoreCorrectnessWorkload : TestWorkload {
double backupAfter, restoreAfter, abortAndRestartAfter;
double backupStartAt, restoreStartAfterBackupFinished, stopDifferentialAfter;
Key backupTag;
int backupRangesCount, backupRangeLengthMax;
bool differentialBackup, performRestore, agentRequest;
Standalone<VectorRef<KeyRangeRef>> backupRanges;
static int backupAgentRequests;
bool locked;
bool allowPauses;
bool shareLogRange;
BackupAndRestoreCorrectnessWorkload(WorkloadContext const& wcx)
: TestWorkload(wcx) {
locked = sharedRandomNumber % 2;
backupAfter = getOption(options, LiteralStringRef("backupAfter"), 10.0);
restoreAfter = getOption(options, LiteralStringRef("restoreAfter"), 35.0);
performRestore = getOption(options, LiteralStringRef("performRestore"), true);
backupTag = getOption(options, LiteralStringRef("backupTag"), BackupAgentBase::getDefaultTag());
backupRangesCount = getOption(options, LiteralStringRef("backupRangesCount"), 5);
backupRangeLengthMax = getOption(options, LiteralStringRef("backupRangeLengthMax"), 1);
abortAndRestartAfter = getOption(options, LiteralStringRef("abortAndRestartAfter"), g_random->random01() < 0.5 ? g_random->random01() * (restoreAfter - backupAfter) + backupAfter : 0.0);
differentialBackup = getOption(options, LiteralStringRef("differentialBackup"), g_random->random01() < 0.5 ? true : false);
stopDifferentialAfter = getOption(options, LiteralStringRef("stopDifferentialAfter"),
differentialBackup ? g_random->random01() * (restoreAfter - std::max(abortAndRestartAfter,backupAfter)) + std::max(abortAndRestartAfter,backupAfter) : 0.0);
agentRequest = getOption(options, LiteralStringRef("simBackupAgents"), true);
allowPauses = getOption(options, LiteralStringRef("allowPauses"), true);
shareLogRange = getOption(options, LiteralStringRef("shareLogRange"), false);
KeyRef beginRange;
KeyRef endRange;
UID randomID = g_nondeterministic_random->randomUniqueID();
if (shareLogRange) {
bool beforePrefix = sharedRandomNumber & 1;
if (beforePrefix)
backupRanges.push_back_deep(backupRanges.arena(), KeyRangeRef(normalKeys.begin, LiteralStringRef("\xfe\xff\xfe")));
else
backupRanges.push_back_deep(backupRanges.arena(), KeyRangeRef(strinc(LiteralStringRef("\x00\x00\x01")), normalKeys.end));
} else if (backupRangesCount <= 0) {
backupRanges.push_back_deep(backupRanges.arena(), normalKeys);
} else {
// Add backup ranges
std::set<std::string> rangeEndpoints;
while (rangeEndpoints.size() < backupRangesCount * 2) {
rangeEndpoints.insert(g_random->randomAlphaNumeric(g_random->randomInt(1, backupRangeLengthMax + 1)));
}
// Create ranges from the keys, in order, to prevent overlaps
std::vector<std::string> sortedEndpoints(rangeEndpoints.begin(), rangeEndpoints.end());
sort(sortedEndpoints.begin(), sortedEndpoints.end());
for (auto i = sortedEndpoints.begin(); i != sortedEndpoints.end(); ++i) {
const std::string &start = *i++;
backupRanges.push_back_deep(backupRanges.arena(), KeyRangeRef(start, *i));
// Track the added range
TraceEvent("BARW_BackupCorrectnessRange", randomID).detail("RangeBegin", (beginRange < endRange) ? printable(beginRange) : printable(endRange))
.detail("RangeEnd", (beginRange < endRange) ? printable(endRange) : printable(beginRange));
}
}
}
virtual std::string description() {
return "BackupAndRestoreCorrectness";
}
virtual Future<Void> setup(Database const& cx) {
return Void();
}
virtual Future<Void> start(Database const& cx) {
if (clientId != 0)
return Void();
TraceEvent(SevInfo, "BARW_Param").detail("Locked", locked);
TraceEvent(SevInfo, "BARW_Param").detail("BackupAfter", backupAfter);
TraceEvent(SevInfo, "BARW_Param").detail("RestoreAfter", restoreAfter);
TraceEvent(SevInfo, "BARW_Param").detail("PerformRestore", performRestore);
TraceEvent(SevInfo, "BARW_Param").detail("BackupTag", printable(backupTag).c_str());
TraceEvent(SevInfo, "BARW_Param").detail("BackupRangesCount", backupRangesCount);
TraceEvent(SevInfo, "BARW_Param").detail("BackupRangeLengthMax", backupRangeLengthMax);
TraceEvent(SevInfo, "BARW_Param").detail("AbortAndRestartAfter", abortAndRestartAfter);
TraceEvent(SevInfo, "BARW_Param").detail("DifferentialBackup", differentialBackup);
TraceEvent(SevInfo, "BARW_Param").detail("StopDifferentialAfter", stopDifferentialAfter);
TraceEvent(SevInfo, "BARW_Param").detail("AgentRequest", agentRequest);
return _start(cx, this);
}
virtual Future<bool> check(Database const& cx) {
return true;
}
virtual void getMetrics(vector<PerfMetric>& m) {
}
ACTOR static Future<Void> changePaused(Database cx, FileBackupAgent* backupAgent) {
loop {
wait( backupAgent->taskBucket->changePause(cx, true) );
wait( delay(30*g_random->random01()) );
wait( backupAgent->taskBucket->changePause(cx, false) );
wait( delay(120*g_random->random01()) );
}
}
ACTOR static Future<Void> statusLoop(Database cx, std::string tag) {
state FileBackupAgent agent;
loop {
std::string status = wait(agent.getStatus(cx, true, tag));
puts(status.c_str());
wait(delay(2.0));
}
}
ACTOR static Future<Void> doBackup(BackupAndRestoreCorrectnessWorkload* self, double startDelay, FileBackupAgent* backupAgent, Database cx,
Key tag, Standalone<VectorRef<KeyRangeRef>> backupRanges, double stopDifferentialDelay, Promise<Void> submittted) {
state UID randomID = g_nondeterministic_random->randomUniqueID();
state Future<Void> stopDifferentialFuture = delay(stopDifferentialDelay);
wait( delay( startDelay ));
if (startDelay || BUGGIFY) {
TraceEvent("BARW_DoBackupAbortBackup1", randomID).detail("Tag", printable(tag)).detail("StartDelay", startDelay);
try {
wait(backupAgent->abortBackup(cx, tag.toString()));
}
catch (Error& e) {
TraceEvent("BARW_DoBackupAbortBackupException", randomID).error(e).detail("Tag", printable(tag));
if (e.code() != error_code_backup_unneeded)
throw;
}
}
TraceEvent("BARW_DoBackupSubmitBackup", randomID).detail("Tag", printable(tag)).detail("StopWhenDone", stopDifferentialDelay ? "False" : "True");
state std::string backupContainer = "file://simfdb/backups/";
state Future<Void> status = statusLoop(cx, tag.toString());
try {
wait(backupAgent->submitBackup(cx, StringRef(backupContainer), g_random->randomInt(0, 100), tag.toString(), backupRanges, stopDifferentialDelay ? false : true));
}
catch (Error& e) {
TraceEvent("BARW_DoBackupSubmitBackupException", randomID).error(e).detail("Tag", printable(tag));
if (e.code() != error_code_backup_unneeded && e.code() != error_code_backup_duplicate)
throw;
}
submittted.send(Void());
// Stop the differential backup, if enabled
if (stopDifferentialDelay) {
TEST(!stopDifferentialFuture.isReady()); //Restore starts at specified time
wait(stopDifferentialFuture);
TraceEvent("BARW_DoBackupWaitToDiscontinue", randomID).detail("Tag", printable(tag)).detail("DifferentialAfter", stopDifferentialDelay);
try {
if (BUGGIFY) {
state KeyBackedTag backupTag = makeBackupTag(tag.toString());
TraceEvent("BARW_DoBackupWaitForRestorable", randomID).detail("Tag", backupTag.tagName);
// Wait until the backup is in a restorable state and get the status, URL, and UID atomically
state Reference<IBackupContainer> lastBackupContainer;
state UID lastBackupUID;
state int resultWait = wait(backupAgent->waitBackup(cx, backupTag.tagName, false, &lastBackupContainer, &lastBackupUID));
state bool restorable = false;
if(lastBackupContainer) {
state Future<BackupDescription> fdesc = lastBackupContainer->describeBackup();
wait(ready(fdesc));
if(!fdesc.isError()) {
state BackupDescription desc = fdesc.get();
wait(desc.resolveVersionTimes(cx));
printf("BackupDescription:\n%s\n", desc.toString().c_str());
restorable = desc.maxRestorableVersion.present();
}
}
TraceEvent("BARW_LastBackupContainer", randomID)
.detail("BackupTag", printable(tag))
.detail("LastBackupContainer", lastBackupContainer ? lastBackupContainer->getURL() : "")
.detail("LastBackupUID", lastBackupUID).detail("WaitStatus", resultWait).detail("Restorable", restorable);
// Do not check the backup, if aborted
if (resultWait == BackupAgentBase::STATE_ABORTED) {
}
// Ensure that a backup container was found
else if (!lastBackupContainer) {
TraceEvent(SevError, "BARW_MissingBackupContainer", randomID).detail("LastBackupUID", lastBackupUID).detail("BackupTag", printable(tag)).detail("WaitStatus", resultWait);
printf("BackupCorrectnessMissingBackupContainer tag: %s status: %d\n", printable(tag).c_str(), resultWait);
}
// Check that backup is restorable
else if(!restorable) {
TraceEvent(SevError, "BARW_NotRestorable", randomID).detail("LastBackupUID", lastBackupUID).detail("BackupTag", printable(tag))
.detail("BackupFolder", lastBackupContainer->getURL()).detail("WaitStatus", resultWait);
printf("BackupCorrectnessNotRestorable: tag: %s\n", printable(tag).c_str());
}
// Abort the backup, if not the first backup because the second backup may have aborted the backup by now
if (startDelay) {
TraceEvent("BARW_DoBackupAbortBackup2", randomID).detail("Tag", printable(tag))
.detail("WaitStatus", resultWait)
.detail("LastBackupContainer", lastBackupContainer ? lastBackupContainer->getURL() : "")
.detail("Restorable", restorable);
wait(backupAgent->abortBackup(cx, tag.toString()));
}
else {
TraceEvent("BARW_DoBackupDiscontinueBackup", randomID).detail("Tag", printable(tag)).detail("DifferentialAfter", stopDifferentialDelay);
wait(backupAgent->discontinueBackup(cx, tag));
}
}
else {
TraceEvent("BARW_DoBackupDiscontinueBackup", randomID).detail("Tag", printable(tag)).detail("DifferentialAfter", stopDifferentialDelay);
wait(backupAgent->discontinueBackup(cx, tag));
}
}
catch (Error& e) {
TraceEvent("BARW_DoBackupDiscontinueBackupException", randomID).error(e).detail("Tag", printable(tag));
if (e.code() != error_code_backup_unneeded && e.code() != error_code_backup_duplicate)
throw;
}
}
// Wait for the backup to complete
TraceEvent("BARW_DoBackupWaitBackup", randomID).detail("Tag", printable(tag));
state int statusValue = wait(backupAgent->waitBackup(cx, tag.toString(), true));
state std::string statusText;
std::string _statusText = wait( backupAgent->getStatus(cx, 5, tag.toString()) );
statusText = _statusText;
// Can we validate anything about status?
TraceEvent("BARW_DoBackupComplete", randomID).detail("Tag", printable(tag))
.detail("Status", statusText).detail("StatusValue", statusValue);
return Void();
}
/**
This actor attempts to restore the database without clearing the keyspace.
*/
ACTOR static Future<Void> attemptDirtyRestore(BackupAndRestoreCorrectnessWorkload* self, Database cx, FileBackupAgent* backupAgent, Standalone<StringRef> lastBackupContainer, UID randomID) {
state Transaction tr(cx);
state int rowCount = 0;
loop{
try {
Standalone<RangeResultRef> existingRows = wait(tr.getRange(normalKeys, 1));
rowCount = existingRows.size();
break;
}
catch (Error &e) {
wait(tr.onError(e));
}
}
// Try doing a restore without clearing the keys
if (rowCount > 0) {
try {
wait(success(backupAgent->restore(cx, self->backupTag, KeyRef(lastBackupContainer), true, -1, true, normalKeys, Key(), Key(), self->locked)));
TraceEvent(SevError, "BARW_RestoreAllowedOverwrittingDatabase", randomID);
ASSERT(false);
}
catch (Error &e) {
if (e.code() != error_code_restore_destination_not_empty) {
throw;
}
}
}
return Void();
}
ACTOR static Future<Void> _start(Database cx, BackupAndRestoreCorrectnessWorkload* self) {
state FileBackupAgent backupAgent;
state Future<Void> extraBackup;
state bool extraTasks = false;
TraceEvent("BARW_Arguments").detail("BackupTag", printable(self->backupTag)).detail("PerformRestore", self->performRestore)
.detail("BackupAfter", self->backupAfter).detail("RestoreAfter", self->restoreAfter)
.detail("AbortAndRestartAfter", self->abortAndRestartAfter).detail("DifferentialAfter", self->stopDifferentialAfter);
state UID randomID = g_nondeterministic_random->randomUniqueID();
if(self->allowPauses && BUGGIFY) {
state Future<Void> cp = changePaused(cx, &backupAgent);
}
// Increment the backup agent requets
if (self->agentRequest) {
BackupAndRestoreCorrectnessWorkload::backupAgentRequests ++;
}
try{
state Future<Void> startRestore = delay(self->restoreAfter);
// backup
wait(delay(self->backupAfter));
TraceEvent("BARW_DoBackup1", randomID).detail("Tag", printable(self->backupTag));
state Promise<Void> submitted;
state Future<Void> b = doBackup(self, 0, &backupAgent, cx, self->backupTag, self->backupRanges, self->stopDifferentialAfter, submitted);
if (self->abortAndRestartAfter) {
TraceEvent("BARW_DoBackup2", randomID).detail("Tag", printable(self->backupTag)).detail("AbortWait", self->abortAndRestartAfter);
wait(submitted.getFuture());
b = b && doBackup(self, self->abortAndRestartAfter, &backupAgent, cx, self->backupTag, self->backupRanges, self->stopDifferentialAfter, Promise<Void>());
}
TraceEvent("BARW_DoBackupWait", randomID).detail("BackupTag", printable(self->backupTag)).detail("AbortAndRestartAfter", self->abortAndRestartAfter);
try {
wait(b);
} catch( Error &e ) {
if(e.code() != error_code_database_locked)
throw;
if(self->performRestore)
throw;
return Void();
}
TraceEvent("BARW_DoBackupDone", randomID).detail("BackupTag", printable(self->backupTag)).detail("AbortAndRestartAfter", self->abortAndRestartAfter);
state KeyBackedTag keyBackedTag = makeBackupTag(self->backupTag.toString());
UidAndAbortedFlagT uidFlag = wait(keyBackedTag.getOrThrow(cx));
state UID logUid = uidFlag.first;
state Key destUidValue = wait(BackupConfig(logUid).destUidValue().getD(cx));
state Reference<IBackupContainer> lastBackupContainer = wait(BackupConfig(logUid).backupContainer().getD(cx));
// Occasionally start yet another backup that might still be running when we restore
if (!self->locked && BUGGIFY) {
TraceEvent("BARW_SubmitBackup2", randomID).detail("Tag", printable(self->backupTag));
try {
extraBackup = backupAgent.submitBackup(cx, LiteralStringRef("file://simfdb/backups/"), g_random->randomInt(0, 100), self->backupTag.toString(), self->backupRanges, true);
}
catch (Error& e) {
TraceEvent("BARW_SubmitBackup2Exception", randomID).error(e).detail("BackupTag", printable(self->backupTag));
if (e.code() != error_code_backup_unneeded && e.code() != error_code_backup_duplicate)
throw;
}
}
TEST(!startRestore.isReady()); //Restore starts at specified time
wait(startRestore);
if (lastBackupContainer && self->performRestore) {
if (g_random->random01() < 0.5) {
wait(attemptDirtyRestore(self, cx, &backupAgent, StringRef(lastBackupContainer->getURL()), randomID));
}
wait(runRYWTransaction(cx, [=](Reference<ReadYourWritesTransaction> tr) -> Future<Void> {
for (auto &kvrange : self->backupRanges)
tr->clear(kvrange);
return Void();
}));
// restore database
TraceEvent("BARW_Restore", randomID).detail("LastBackupContainer", lastBackupContainer->getURL()).detail("RestoreAfter", self->restoreAfter).detail("BackupTag", printable(self->backupTag));
auto container = IBackupContainer::openContainer(lastBackupContainer->getURL());
BackupDescription desc = wait( container->describeBackup() );
Version targetVersion = -1;
if(desc.maxRestorableVersion.present()) {
if( g_random->random01() < 0.1 ) {
targetVersion = desc.minRestorableVersion.get();
}
else if( g_random->random01() < 0.1 ) {
targetVersion = desc.maxRestorableVersion.get();
}
else if( g_random->random01() < 0.5 ) {
targetVersion = g_random->randomInt64(desc.minRestorableVersion.get(), desc.contiguousLogEnd.get());
}
}
state std::vector<Future<Version>> restores;
state std::vector<Standalone<StringRef>> restoreTags;
state int restoreIndex;
for (restoreIndex = 0; restoreIndex < self->backupRanges.size(); restoreIndex++) {
auto range = self->backupRanges[restoreIndex];
Standalone<StringRef> restoreTag(self->backupTag.toString() + "_" + std::to_string(restoreIndex));
restoreTags.push_back(restoreTag);
restores.push_back(backupAgent.restore(cx, restoreTag, KeyRef(lastBackupContainer->getURL()), true, targetVersion, true, range, Key(), Key(), self->locked));
}
// Sometimes kill and restart the restore
if(BUGGIFY) {
wait(delay(g_random->randomInt(0, 10)));
for(restoreIndex = 0; restoreIndex < restores.size(); restoreIndex++) {
FileBackupAgent::ERestoreState rs = wait(backupAgent.abortRestore(cx, restoreTags[restoreIndex]));
// The restore may have already completed, or the abort may have been done before the restore
// was even able to start. Only run a new restore if the previous one was actually aborted.
if (rs == FileBackupAgent::ERestoreState::ABORTED) {
wait(runRYWTransaction(cx, [=](Reference<ReadYourWritesTransaction> tr) -> Future<Void> {
tr->clear(self->backupRanges[restoreIndex]);
return Void();
}));
restores[restoreIndex] = backupAgent.restore(cx, restoreTags[restoreIndex], KeyRef(lastBackupContainer->getURL()), true, -1, true, self->backupRanges[restoreIndex], Key(), Key(), self->locked);
}
}
}
wait(waitForAll(restores));
for (auto &restore : restores) {
assert(!restore.isError());
}
}
if (extraBackup.isValid()) {
TraceEvent("BARW_WaitExtraBackup", randomID).detail("BackupTag", printable(self->backupTag));
extraTasks = true;
try {
wait(extraBackup);
}
catch (Error& e) {
TraceEvent("BARW_ExtraBackupException", randomID).error(e).detail("BackupTag", printable(self->backupTag));
if (e.code() != error_code_backup_unneeded && e.code() != error_code_backup_duplicate)
throw;
}
TraceEvent("BARW_AbortBackupExtra", randomID).detail("BackupTag", printable(self->backupTag));
try {
wait(backupAgent.abortBackup(cx, self->backupTag.toString()));
}
catch (Error& e) {
TraceEvent("BARW_AbortBackupExtraException", randomID).error(e);
if (e.code() != error_code_backup_unneeded)
throw;
}
}
state Key backupAgentKey = uidPrefixKey(logRangesRange.begin, logUid);
state Key backupLogValuesKey = destUidValue.withPrefix(backupLogKeys.begin);
state Key backupLatestVersionsPath = destUidValue.withPrefix(backupLatestVersionsPrefix);
state Key backupLatestVersionsKey = uidPrefixKey(backupLatestVersionsPath, logUid);
state int displaySystemKeys = 0;
// Ensure that there is no left over key within the backup subspace
loop {
state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(cx));
TraceEvent("BARW_CheckLeftoverKeys", randomID).detail("BackupTag", printable(self->backupTag));
try {
tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
// Check the left over tasks
// We have to wait for the list to empty since an abort and get status
// can leave extra tasks in the queue
TraceEvent("BARW_CheckLeftoverTasks", randomID).detail("BackupTag", printable(self->backupTag));
state int64_t taskCount = wait( backupAgent.getTaskCount(tr) );
state int waitCycles = 0;
if ((taskCount) && false) {
TraceEvent("BARW_EndingNonzeroTaskCount", randomID).detail("BackupTag", printable(self->backupTag)).detail("TaskCount", taskCount).detail("WaitCycles", waitCycles);
printf("EndingNonZeroTasks: %ld\n", (long) taskCount);
wait(TaskBucket::debugPrintRange(cx, LiteralStringRef("\xff"), StringRef()));
}
loop {
waitCycles ++;
TraceEvent("BARW_NonzeroTaskWait", randomID).detail("BackupTag", printable(self->backupTag)).detail("TaskCount", taskCount).detail("WaitCycles", waitCycles);
printf("%.6f %-10s Wait #%4d for %lld tasks to end\n", now(), randomID.toString().c_str(), waitCycles, (long long) taskCount);
wait(delay(5.0));
tr->commit();
tr = Reference<ReadYourWritesTransaction>(new ReadYourWritesTransaction(cx));
int64_t _taskCount = wait( backupAgent.getTaskCount(tr) );
taskCount = _taskCount;
if (!taskCount) {
break;
}
}
if (taskCount) {
displaySystemKeys ++;
TraceEvent(SevError, "BARW_NonzeroTaskCount", randomID).detail("BackupTag", printable(self->backupTag)).detail("TaskCount", taskCount).detail("WaitCycles", waitCycles);
printf("BackupCorrectnessLeftOverLogTasks: %ld\n", (long) taskCount);
}
Standalone<RangeResultRef> agentValues = wait(tr->getRange(KeyRange(KeyRangeRef(backupAgentKey, strinc(backupAgentKey))), 100));
// Error if the system keyspace for the backup tag is not empty
if (agentValues.size() > 0) {
displaySystemKeys ++;
printf("BackupCorrectnessLeftOverMutationKeys: (%d) %s\n", agentValues.size(), printable(backupAgentKey).c_str());
TraceEvent(SevError, "BackupCorrectnessLeftOverMutationKeys", randomID).detail("BackupTag", printable(self->backupTag))
.detail("LeftOverKeys", agentValues.size()).detail("KeySpace", printable(backupAgentKey));
for (auto & s : agentValues) {
TraceEvent("BARW_LeftOverKey", randomID).detail("Key", printable(StringRef(s.key.toString()))).detail("Value", printable(StringRef(s.value.toString())));
printf(" Key: %-50s Value: %s\n", printable(StringRef(s.key.toString())).c_str(), printable(StringRef(s.value.toString())).c_str());
}
}
else {
printf("No left over backup agent configuration keys\n");
}
Optional<Value> latestVersion = wait(tr->get(backupLatestVersionsKey));
if (latestVersion.present()) {
TraceEvent(SevError, "BackupCorrectnessLeftOverVersionKey", randomID).detail("BackupTag", printable(self->backupTag)).detail("BackupLatestVersionsKey", backupLatestVersionsKey.printable()).detail("DestUidValue", destUidValue.printable());
} else {
printf("No left over backup version key\n");
}
Standalone<RangeResultRef> versions = wait(tr->getRange(KeyRange(KeyRangeRef(backupLatestVersionsPath, strinc(backupLatestVersionsPath))), 1));
if (!self->shareLogRange || !versions.size()) {
Standalone<RangeResultRef> logValues = wait(tr->getRange(KeyRange(KeyRangeRef(backupLogValuesKey, strinc(backupLogValuesKey))), 100));
// Error if the log/mutation keyspace for the backup tag is not empty
if (logValues.size() > 0) {
displaySystemKeys ++;
printf("BackupCorrectnessLeftOverLogKeys: (%d) %s\n", logValues.size(), printable(backupLogValuesKey).c_str());
TraceEvent(SevError, "BackupCorrectnessLeftOverLogKeys", randomID).detail("BackupTag", printable(self->backupTag))
.detail("LeftOverKeys", logValues.size()).detail("KeySpace", printable(backupLogValuesKey));
}
else {
printf("No left over backup log keys\n");
}
}
break;
}
catch (Error &e) {
TraceEvent("BARW_CheckException", randomID).error(e);
wait(tr->onError(e));
}
}
if (displaySystemKeys) {
wait(TaskBucket::debugPrintRange(cx, LiteralStringRef("\xff"), StringRef()));
}
TraceEvent("BARW_Complete", randomID).detail("BackupTag", printable(self->backupTag));
// Decrement the backup agent requets
if (self->agentRequest) {
BackupAndRestoreCorrectnessWorkload::backupAgentRequests --;
}
// SOMEDAY: Remove after backup agents can exist quiescently
if ((g_simulator.backupAgents == ISimulator::BackupToFile) && (!BackupAndRestoreCorrectnessWorkload::backupAgentRequests)) {
g_simulator.backupAgents = ISimulator::NoBackupAgents;
}
}
catch (Error& e) {
TraceEvent(SevError, "BackupAndRestoreCorrectness").error(e).GetLastError();
throw;
}
return Void();
}
};
int BackupAndRestoreCorrectnessWorkload::backupAgentRequests = 0;
WorkloadFactory<BackupAndRestoreCorrectnessWorkload> BackupAndRestoreCorrectnessWorkloadFactory("BackupAndRestoreCorrectness");
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