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https://issues.apache.org/jira/browse/YARN-10313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17134306#comment-17134306
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Youquan Lin commented on YARN-10313:
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my patch: [https://github.com/apache/hadoop/pull/2071]

> Add hadoop process id to the suffix of hadoop-unjar directory
> -------------------------------------------------------------
>
>                 Key: YARN-10313
>                 URL: https://issues.apache.org/jira/browse/YARN-10313
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: client
>    Affects Versions: 3.1.3
>            Reporter: Youquan Lin
>            Priority: Major
>
> We used azkaban to submit many yarn jobs, and the /tmp directory will have 
> many hadoop-unjar directories. Sometimes the hadoop-unjar directory on the 
> azkaban machine takes up a lot of space, but we do not know which process 
> generated this directory. In order to solve this problem, we add the hadoop 
> process id to the suffix of the hadoop-unjar directory



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