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https://issues.apache.org/jira/browse/HDFS-997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842017#action_12842017
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Konstantin Boudnik commented on HDFS-997:
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My comments for HADOOP-6566 are applicable here as well: if such a change is
introduced then an appropriate environment has to be set by the tests
beforehand.
> DataNode local directories should have narrow permissions
> ---------------------------------------------------------
>
> Key: HDFS-997
> URL: https://issues.apache.org/jira/browse/HDFS-997
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Fix For: 0.22.0
>
>
> DataNode's local directories (blocks et al) should have narrow 700
> permissions for security
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