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https://issues.apache.org/jira/browse/FLINK-1362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14322159#comment-14322159
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Stephan Ewen commented on FLINK-1362:
-------------------------------------

Sounds good. Feel free to close the issue then.

> Spurious errors in execution state messaging between TaskManager and 
> JobManager
> -------------------------------------------------------------------------------
>
>                 Key: FLINK-1362
>                 URL: https://issues.apache.org/jira/browse/FLINK-1362
>             Project: Flink
>          Issue Type: Bug
>          Components: Distributed Runtime
>    Affects Versions: 0.9
>            Reporter: Stephan Ewen
>
> In various tasks, it is possible that a notification from the TaskManager to 
> the JobManager fails with the following exception:
> {code}
> Exception in thread "<task thread>" java.lang.NullPointerException
>       at 
> org.apache.flink.runtime.taskmanager.TaskManager.notifyExecutionStateChange(TaskManager.scala:281)
>       at org.apache.flink.runtime.taskmanager.Task.markFailed(Task.java:199)
>       at 
> org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:307)
>       at java.lang.Thread.run(Thread.java:745)
> {code}



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