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https://issues.apache.org/jira/browse/HADOOP-4782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657842#action_12657842
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Eric Yang commented on HADOOP-4782:
-----------------------------------
Chukwa can figure out the file name because the absolute file name is given by
Hadoop to log4j. Chukwa interfaces with Log4j to obtain the file name.
Therefore, permission 710 would be sufficient.
> [HOD] HOD opens up directory permissions more than required
> -----------------------------------------------------------
>
> Key: HADOOP-4782
> URL: https://issues.apache.org/jira/browse/HADOOP-4782
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/hod
> Affects Versions: 0.20.0
> Reporter: Hemanth Yamijala
> Assignee: Peeyush Bishnoi
> Priority: Blocker
> Fix For: 0.20.0
>
> Attachments: hadoop-4782-revert-umask.txt, hadoop-4782.txt,
> hadoop-4782v1.txt
>
>
> In HADOOP-4705, we fixed hod to grant read access to all directories and
> files that HOD creates, and also set the umask such that files created by
> Hadoop also get read permissions to world. In shared clusters, this is
> opening up too much to the users. This issue is for resetting the permissions
> to be as constrained as possible, while still addressing the requirement
> raised in HADOOP-4705.
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