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Add more tracing to move keys locking events

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This commit is contained in:
Jingyu Zhou 2019-09-24 13:08:18 -07:00
parent f13039e6d4
commit 2bbc6d68ba
1 changed files with 21 additions and 9 deletions
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30
fdbserver/MoveKeys.actor.cpp
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@ -67,12 +67,11 @@ ACTOR Future<MoveKeysLock> takeMoveKeysLock( Database cx, UID ddId ) {
loop {
try {
state MoveKeysLock lock;
state UID txnId;
tr.setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
if( !g_network->isSimulated() ) {
UID id(deterministicRandom()->randomUniqueID());
TraceEvent("TakeMoveKeysLockTransaction", ddId)
.detail("TransactionUID", id);
tr.debugTransaction( id );
txnId = deterministicRandom()->randomUniqueID();
tr.debugTransaction(txnId);
}
{
Optional<Value> readVal = wait( tr.get( moveKeysLockOwnerKey ) );
@ -83,6 +82,11 @@ ACTOR Future<MoveKeysLock> takeMoveKeysLock( Database cx, UID ddId ) {
lock.prevWrite = readVal.present() ? BinaryReader::fromStringRef<UID>(readVal.get(), Unversioned()) : UID();
}
lock.myOwner = deterministicRandom()->randomUniqueID();
TraceEvent("TakeMoveKeysLockTransaction", ddId)
.detail("TransactionUID", txnId)
.detail("PrevOwner", lock.prevOwner.toString())
.detail("PrevWrite", lock.prevWrite.toString())
.detail("MyOwner", lock.myOwner.toString());
tr.set(moveKeysLockOwnerKey, BinaryWriter::toValue(lock.myOwner, Unversioned()));
wait(tr.commit());
return lock;
@ -111,11 +115,19 @@ ACTOR Future<Void> checkMoveKeysLock( Transaction* tr, MoveKeysLock lock, bool i
}
// Take the lock
if(isWrite) {
BinaryWriter wrMyOwner(Unversioned()); wrMyOwner << lock.myOwner;
tr->set( moveKeysLockOwnerKey, wrMyOwner.toValue() );
BinaryWriter wrLastWrite(Unversioned()); wrLastWrite << deterministicRandom()->randomUniqueID();
tr->set( moveKeysLockWriteKey, wrLastWrite.toValue() );
if (isWrite) {
BinaryWriter wrMyOwner(Unversioned());
wrMyOwner << lock.myOwner;
tr->set(moveKeysLockOwnerKey, wrMyOwner.toValue());
BinaryWriter wrLastWrite(Unversioned());
UID lastWriter = deterministicRandom()->randomUniqueID();
wrLastWrite << lastWriter;
tr->set(moveKeysLockWriteKey, wrLastWrite.toValue());
TraceEvent("CheckMoveKeysLock")
.detail("PrevOwner", lock.prevOwner.toString())
.detail("PrevWrite", lock.prevWrite.toString())
.detail("MyOwner", lock.myOwner.toString())
.detail("Writer", lastWriter.toString());
}
return Void();