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https://issues.apache.org/jira/browse/YARN-9401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806357#comment-16806357
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Yufei Gu commented on YARN-9401:
--------------------------------

Thank [~jiwq] for working on this. 
Looking more deeply, the hdfs command just uses VersionInfo. This is never a 
big issue likely due to YARN and HDFS never be released separately. Besides, I 
didn't see why we need the class YarnVersionInfo. Hi [~wangda], do you happen 
to know why we need class YarnVersionInfo?

> Fix `yarn version` print the version info is the same as `hadoop version`
> -------------------------------------------------------------------------
>
>                 Key: YARN-9401
>                 URL: https://issues.apache.org/jira/browse/YARN-9401
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>            Reporter: Wanqiang Ji
>            Assignee: Wanqiang Ji
>            Priority: Minor
>         Attachments: YARN-9401.001.patch, YARN-9401.002.patch
>
>
> It's caused by in `yarn` shell used `org.apache.hadoop.util.VersionInfo` 
> instead of `org.apache.hadoop.yarn.util.YarnVersionInfo` as the 
> `HADOOP_CLASSNAME` by mistake.



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