Yufei Gu updated YARN-8162:
    Attachment: YARN-8162.001.patch

> Method DirectoryCollection#verifyDirUsingMkdir isn't needed anymore
> -------------------------------------------------------------------
>                 Key: YARN-8162
>                 URL: https://issues.apache.org/jira/browse/YARN-8162
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 3.1.0
>            Reporter: Yufei Gu
>            Assignee: Yufei Gu
>            Priority: Major
>         Attachments: YARN-8162.001.patch
> First of all, DirectoryCollection#verifyDirUsingMkdir doesn't do what it 
> claims to do, it creates a file but its Java doc says it create a dir. What's 
> more, it is no longer needed after HADOOP-13738 (DiskChecker should perform 
> some disk IO). It duplicates what HADOOP-13738 does. We should remove it.

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