[jira] [Created] (FLINK-6400) Lack of protection accessing masterHooks in CheckpointCoordinator#triggerCheckpoint

[Shang Yuanchun (Jira)]

Ted Yu created FLINK-6400:
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             Summary: Lack of protection accessing masterHooks in CheckpointCoordinator#triggerCheckpoint
                 Key: FLINK-6400
                 URL: https://issues.apache.org/jira/browse/FLINK-6400
             Project: Flink
          Issue Type: Bug
            Reporter: Ted Yu
            Priority: Minor


Here is related code:
{code}
    synchronized (triggerLock) {
...
      try {
        List<MasterState> masterStates = MasterHooks.triggerMasterHooks(masterHooks.values(),
{code}
masterHooks is protected by lock in other methods while triggerLock is only used in CheckpointCoordinator#triggerCheckpoint()



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