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https://issues.apache.org/jira/browse/MAPREDUCE-7298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17202859#comment-17202859
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Aasha Medhi commented on MAPREDUCE-7298:
----------------------------------------

1. UT added
2. Description added to Jira

[~shashikant] Job will get cleaned only if its a blocking call to run. If its a 
non blocking call, I don't see a way to get the job reference. How will that 
get cleaned up?

> Distcp doesn't close the job after the job is completed
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-7298
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7298
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>            Reporter: Aasha Medhi
>            Priority: Major
>         Attachments: MAPREDUCE-7298.01.patch
>
>
> Distcp doesn't close the job after the job is completed. This leads to leaked 
> Truststore Reloader Threads.
> The fix is to close the job once it is complete. job.close internally calls 
> yarnClient.close(), which then calls timelineConnector.serviceStop() . This 
> destroys the sslFactory cleaning up the ReloadingX509TrustManager.
> Without the patch for each distcp job, a new ReloadingX509TrustManager is 
> created which creates a new thread. These threads are never killed and they 
> remain like that till HS2 is restarted. With the close, the thread will be 
> cleaned up once the job is completed.



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