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https://issues.apache.org/jira/browse/HADOOP-4782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657708#action_12657708
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Hemanth Yamijala commented on HADOOP-4782:
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Sorry this is taking long. But I realized that in the 0.18 patch, the history
directory alone needs read permissions for group also. This is because the
history files created have random timestamps in them and chukwa will not be
able to read the files without knowing what the actual names are, and which
they don't know. So, instead of 710, the permissions on the history directory
should be 750. Can you please provide a new patch for 0.18 ?
> [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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