[jira] [Created] (FLINK-4701) Unprotected access to cancelables in StreamTask

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[jira] [Created] (FLINK-4701) Unprotected access to cancelables in StreamTask

Shang Yuanchun (Jira)
Ted Yu created FLINK-4701:
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             Summary: Unprotected access to cancelables in StreamTask
                 Key: FLINK-4701
                 URL: https://issues.apache.org/jira/browse/FLINK-4701
             Project: Flink
          Issue Type: Bug
            Reporter: Ted Yu
            Priority: Minor


In performCheckpoint():
{code}
                                AsyncCheckpointRunnable asyncCheckpointRunnable = new AsyncCheckpointRunnable(
                                                "checkpoint-" + checkpointId + "-" + timestamp,
                                                this,
                                                cancelables,
                                                chainedStateHandles,
                                                keyGroupsStateHandleFuture,
                                                checkpointId,
                                                bytesBufferedAlignment,
                                                alignmentDurationNanos,
                                                syncDurationMillis,
                                                endOfSyncPart);

                                synchronized (cancelables) {
                                        cancelables.add(asyncCheckpointRunnable);
                                }
{code}
Construction of AsyncCheckpointRunnable should be put under the synchronized block of cancelables.



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