[jira] [Commented] (FLINK-11631) TaskExecutorITCase#testJobReExecutionAfterTaskExecutorTermination unstable on Travis

["Till Rohrmann (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-11631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16880411#comment-16880411 ] 

Till Rohrmann commented on FLINK-11631:
---------------------------------------

Another instance: https://api.travis-ci.org/v3/job/554991836/log.txt

> TaskExecutorITCase#testJobReExecutionAfterTaskExecutorTermination unstable on Travis
> ------------------------------------------------------------------------------------
>
>                 Key: FLINK-11631
>                 URL: https://issues.apache.org/jira/browse/FLINK-11631
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination, Tests
>    Affects Versions: 1.8.0
>            Reporter: Till Rohrmann
>            Priority: Critical
>              Labels: test-stability
>
> The {{TaskExecutorITCase#testJobReExecutionAfterTaskExecutorTermination}} is unstable on Travis. It fails with 
> {code}
> 16:12:04.644 [ERROR] testJobReExecutionAfterTaskExecutorTermination(org.apache.flink.runtime.taskexecutor.TaskExecutorITCase)  Time elapsed: 1.257 s  <<< ERROR!
> org.apache.flink.util.FlinkException: Could not close resource.
> 	at org.apache.flink.runtime.taskexecutor.TaskExecutorITCase.teardown(TaskExecutorITCase.java:83)
> Caused by: org.apache.flink.util.FlinkException: Error while shutting the TaskExecutor down.
> Caused by: org.apache.flink.util.FlinkException: Could not properly shut down the TaskManager services.
> Caused by: java.lang.IllegalStateException: NetworkBufferPool is not empty after destroying all LocalBufferPools
> {code} 
> https://api.travis-ci.org/v3/job/493221318/log.txt
> The problem seems to be caused by the {{TaskExecutor}} not properly waiting for the termination of all running {{Tasks}}. Due to this, there is a race condition which causes that not all buffers are returned to the {{BufferPool}}.



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