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https://issues.apache.org/jira/browse/FLINK-4540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15961070#comment-15961070
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ASF GitHub Bot commented on FLINK-4540:
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Github user MayerRoman closed the pull request at:
https://github.com/apache/flink/pull/3287
> Detached job execution may prevent cluster shutdown
> ---------------------------------------------------
>
> Key: FLINK-4540
> URL: https://issues.apache.org/jira/browse/FLINK-4540
> Project: Flink
> Issue Type: Bug
> Components: YARN
> Affects Versions: 1.2.0, 1.1.2
> Reporter: Maximilian Michels
> Assignee: Roman Maier
> Priority: Minor
>
> There is a problem with the detached execution of jobs. This can prevent
> cluster shutdown 1) when eager jobs are executed, i.e. the job calls
> `collect()/count()`, and 2) when the user jar doesn't contain a job.
> 1) For example, {{./flink -d -m yarn-cluster -yn 1
> ../examples/batch/WordCount.jar}} will throw an exception and only disconnect
> the YarnClusterClient afterwards. In detached mode, the code assumes the
> cluster is shutdown through the {{shutdownAfterJob}} method which ensures
> that the YarnJobManager shuts down after the job completes. Due to the
> exception thrown when executing eager jobs, the jobmanager never receives a
> job and thus never shuts down the cluster.
> 2) The same problem also occurs in detached execution when the user jar
> doesn't contain a job.
> A good solution would be to defer cluster startup until the job has been
> fully assembled.
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