Yufei Gu updated YARN-8162:
    Attachment: YARN-8162.002.patch

> Remove Method DirectoryCollection#verifyDirUsingMkdir
> -----------------------------------------------------
>                 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, YARN-8162.002.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. 
> Because of that, it doesn't compatible with {{ReadWriteDiskValidator}} 
> because the validator will throw an exception if it isn't 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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