Ted Yu created FLINK-4482:
-----------------------------
Summary: numUnsuccessfulCheckpointsTriggers is accessed without
holding triggerLock
Key: FLINK-4482
URL: https://issues.apache.org/jira/browse/FLINK-4482
Project: Flink
Issue Type: Bug
Reporter: Ted Yu
Priority: Minor
In CheckpointCoordinator#stopCheckpointScheduler() :
{code}
synchronized (lock) {
...
numUnsuccessfulCheckpointsTriggers = 0;
{code}
triggerLock is not held in the above operation.
See comment for triggerLock earlier in triggerCheckpoint():
{code}
// we lock with a special lock to make sure that trigger requests do not
overtake each other.
// this is not done with the coordinator-wide lock, because the
'checkpointIdCounter'
// may issue blocking operations. Using a different lock than teh
coordinator-wide lock,
// we avoid blocking the processing of 'acknowledge/decline' messages
during that time.
synchronized (triggerLock) {
{code}
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