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Do not rollback while uncommitted sets exist

This commit is contained in:
Evan Tschannen 2018-10-15 15:09:12 -07:00 committed by GitHub
parent 88e8422511
commit d8dc8e83b9
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1 changed files with 11 additions and 5 deletions
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16
fdbserver/storageserver.actor.cpp
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@ -333,7 +333,7 @@ public:
CoalescedKeyRangeMap<bool, int64_t, KeyBytesMetric<int64_t>> byteSampleClears;
AsyncVar<bool> byteSampleClearsTooLarge;
Future<Void> byteSampleRecovery;
Future<Void> durable = Void();
Future<Void> durableInProgress;
AsyncMap<Key,bool> watches;
int64_t watchBytes;
@ -416,7 +416,7 @@ public:
: instanceID(g_random->randomUniqueID().first()),
storage(this, storage), db(db),
lastTLogVersion(0), lastVersionWithData(0), restoredVersion(0),
updateEagerReads(0),
durableInProgress(Void()), updateEagerReads(0),
shardChangeCounter(0),
fetchKeysParallelismLock(SERVER_KNOBS->FETCH_KEYS_PARALLELISM_BYTES),
shuttingDown(false), debug_inApplyUpdate(false), debug_lastValidateTime(0), watchBytes(0),
@ -2481,7 +2481,7 @@ ACTOR Future<Void> update( StorageServer* data, bool* pReceivedUpdate )
if (e.code() != error_code_worker_removed && e.code() != error_code_please_reboot) {
TraceEvent(SevError, "SSUpdateError", data->thisServerID).error(e).backtrace();
} else if (e.code() == error_code_please_reboot) {
Void _ = wait( data->durable );
Void _ = wait( data->durableInProgress );
}
throw e;
}
@ -2492,6 +2492,9 @@ ACTOR Future<Void> updateStorage(StorageServer* data) {
ASSERT( data->durableVersion.get() == data->storageVersion() );
Void _ = wait( data->desiredOldestVersion.whenAtLeast( data->storageVersion()+1 ) );
Void _ = wait( delay(0, TaskUpdateStorage) );
state Promise<Void> durableInProgress;
data->durableInProgress = durableInProgress.getFuture();
state Version startOldestVersion = data->storageVersion();
state Version newOldestVersion = data->storageVersion();
@ -2512,15 +2515,18 @@ ACTOR Future<Void> updateStorage(StorageServer* data) {
data->storage.makeVersionDurable( newOldestVersion );
debug_advanceMaxCommittedVersion( data->thisServerID, newOldestVersion );
data->durable = data->storage.commit();
state Future<Void> durable = data->storage.commit();
state Future<Void> durableDelay = Void();
if (bytesLeft > 0)
durableDelay = delay(SERVER_KNOBS->STORAGE_COMMIT_INTERVAL);
Void _ = wait( data->durable );
Void _ = wait( durable );
debug_advanceMinCommittedVersion( data->thisServerID, newOldestVersion );
durableInProgress.send(Void());
Void _ = wait( delay(0, TaskUpdateStorage) ); //Setting durableInProgess could cause the storage server to shut down, so delay to check for cancellation
// Taking and releasing the durableVersionLock ensures that no eager reads both begin before the commit was effective and
// are applied after we change the durable version.