[jira] [Created] (FLINK-5486) Lack of synchronization in BucketingSink#handleRestoredBucketState()

[Shang Yuanchun (Jira)]

Ted Yu created FLINK-5486:
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             Summary: Lack of synchronization in BucketingSink#handleRestoredBucketState()
                 Key: FLINK-5486
                 URL: https://issues.apache.org/jira/browse/FLINK-5486
             Project: Flink
          Issue Type: Bug
            Reporter: Ted Yu


Here is related code:
{code}
      handlePendingFilesForPreviousCheckpoints(bucketState.pendingFilesPerCheckpoint);

      synchronized (bucketState.pendingFilesPerCheckpoint) {
        bucketState.pendingFilesPerCheckpoint.clear();
      }
{code}
The handlePendingFilesForPreviousCheckpoints() call should be enclosed inside the synchronization block. Otherwise during the processing of handlePendingFilesForPreviousCheckpoints(), some entries of the map may be cleared.



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