[jira] [Created] (FLINK-6945) TaskCancelAsyncProducerConsumerITCase.testCancelAsyncProducerAndConsumer instable test case

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-6945:
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             Summary: TaskCancelAsyncProducerConsumerITCase.testCancelAsyncProducerAndConsumer instable test case
                 Key: FLINK-6945
                 URL: https://issues.apache.org/jira/browse/FLINK-6945
             Project: Flink
          Issue Type: Bug
          Components: Tests
    Affects Versions: 1.3.1, 1.4.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann
            Priority: Critical
             Fix For: 1.3.2, 1.4.0


The test case {{TaskCancelAsyncProducerConsumerITCase.testCancelAsyncProducerAndConsumer}} sometimes fails with a {{NullPointerException}} [1]. The reason is that contains a race condition between a check and the initialization logic of a {{Thread}}.

[1] https://s3.amazonaws.com/archive.travis-ci.org/jobs/243036022/log.txt



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