[jira] [Created] (FLINK-4631) NullPointerException during stream task cleanup

[Shang Yuanchun (Jira)]

Avihai Berkovitz created FLINK-4631:
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             Summary: NullPointerException during stream task cleanup
                 Key: FLINK-4631
                 URL: https://issues.apache.org/jira/browse/FLINK-4631
             Project: Flink
          Issue Type: Bug
    Affects Versions: 1.1.2
         Environment: Ubuntu server 12.04.5 64 bit
java version "1.8.0_40"
Java(TM) SE Runtime Environment (build 1.8.0_40-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b25, mixed mode)
            Reporter: Avihai Berkovitz


If a streaming job failed during startup (in my case, due to lack of network buffers), all the tasks are being cancelled before they started. This causes many instances of the following exception:
{noformat}
2016-09-18 14:17:12,177 ERROR org.apache.flink.streaming.runtime.tasks.StreamTask           - Error during cleanup of stream task
java.lang.NullPointerException
        at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.cleanup(OneInputStreamTask.java:73)
        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:323)
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:584)
        at java.lang.Thread.run(Thread.java:745)
{noformat}



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