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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5765) Revert CHMOD on the new dirs created-LinuxContainerExecutor creates appcache and its subdirectories with wrong group owner.
Date Wed, 16 Nov 2016 10:46:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-5765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15670120#comment-15670120
] 

Naganarasimha G R commented on YARN-5765:
-----------------------------------------

Thanks for identifying the issue [~haibochen] and reviews from  [~haibochen], [~miklos.szegedi@cloudera.com]
& [~vvasudev]. 
Will put the patch some of the commnts from here to the parent jira !

> Revert CHMOD on the new dirs created-LinuxContainerExecutor creates appcache and its
subdirectories with wrong group owner.
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-5765
>                 URL: https://issues.apache.org/jira/browse/YARN-5765
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.8.0, 3.0.0-alpha1
>            Reporter: Haibo Chen
>            Assignee: Naganarasimha G R
>            Priority: Blocker
>         Attachments: YARN-5765.001.patch
>
>
> Earlier fix for YARN-5287 has been reverted due to this issue : LinuxContainerExecutor
creates usercache/\{userId\}/appcache/\{appId\} with wrong group owner, causing Log aggregation
and ShuffleHandler to fail because node manager process does not have permission to read the
files under the directory.
> This can be easily reproduced by enabling LCE and submitting a MR example job as a user
that does not belong to the same group that NM process belongs to. 



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