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https://issues.apache.org/jira/browse/HDFS-2470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16909144#comment-16909144
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Siddharth Wagle commented on HDFS-2470:
---------------------------------------
On second thought, HBase still relies on short circuit reads AFAIK, so setting
default permissions would be dangerous, at the least we would need to default
to "750". The current patch however with nulls doesn't have side effects for DN
storage.
> NN should automatically set permissions on dfs.namenode.*.dir
> -------------------------------------------------------------
>
> Key: HDFS-2470
> URL: https://issues.apache.org/jira/browse/HDFS-2470
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.0.0-alpha
> Reporter: Aaron T. Myers
> Assignee: Siddharth Wagle
> Priority: Major
> Attachments: HDFS-2470.01.patch, HDFS-2470.02.patch,
> HDFS-2470.03.patch, HDFS-2470.04.patch, HDFS-2470.05.patch,
> HDFS-2470.06.patch, HDFS-2470.07.patch
>
>
> Much as the DN currently sets the correct permissions for the
> dfs.datanode.data.dir, the NN should do the same for the
> dfs.namenode.(name|edit).dir.
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