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https://issues.apache.org/jira/browse/FLINK-16279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17046100#comment-17046100
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Till Rohrmann edited comment on FLINK-16279 at 2/28/20 12:42 PM:
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[~wenlong.lwl] Do you start the Yarn per-job cluster in attached/detached mode?
If it is the detached mode, i think the Flink cluster will always be destroyed
after the job goes in terminal state. For the attached mode, when the client
exits, i think we could not guarantee that the Flink cluster always could be
cleaned up successfully. The cli option {{\-sae,\-\-shutdownOnAttachedExit}}
could be used to make a best-effort clean-up.
was (Author: fly_in_gis):
[~wenlong.lwl] Do you start the Yarn per-job cluster in attached/detached mode?
If it is the detached mode, i think the Flink cluster will always be destroyed
after the job goes in terminal state. For the attached mode, when the client
exits, i think we could not guarantee that the Flink cluster always could be
cleaned up successfully. The cli option {{-sae,--shutdownOnAttachedExit}} could
be used to make a best-effort clean-up.
> Per job Yarn application leak in normal execution mode.
> -------------------------------------------------------
>
> Key: FLINK-16279
> URL: https://issues.apache.org/jira/browse/FLINK-16279
> Project: Flink
> Issue Type: Bug
> Components: Client / Job Submission, Runtime / Coordination
> Affects Versions: 1.10.0
> Reporter: Wenlong Lyu
> Priority: Major
>
> I run a job in yarn per job mode using {{env.executeAsync}}, the job failed
> but the yarn cluster didn't be destroyed.
> After some research on the code, I found that:
> when running in attached mode, MiniDispatcher will never set
> {{shutDownfuture}} before received a request from job client.
> {code}
> if (executionMode == ClusterEntrypoint.ExecutionMode.NORMAL) {
> // terminate the MiniDispatcher once we served the
> first JobResult successfully
> jobResultFuture.thenAccept((JobResult result) -> {
> ApplicationStatus status =
> result.getSerializedThrowable().isPresent() ?
> ApplicationStatus.FAILED :
> ApplicationStatus.SUCCEEDED;
> LOG.debug("Shutting down per-job cluster
> because someone retrieved the job result.");
> shutDownFuture.complete(status);
> });
> }
> {code}
> However, when running in async mode(submit job by env.executeAsync), there
> may be no request from job client because when a user find that the job is
> failed from job client, he may never request the result again.
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