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https://issues.apache.org/jira/browse/HADOOP-3578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amar Kamat updated HADOOP-3578:
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Attachment: hadoop-3578-branch-20-example.patch
Attaching a sample patch for branch 0.20 not to be committed.
> mapred.system.dir should be accessible only to hadoop daemons
> --------------------------------------------------------------
>
> Key: HADOOP-3578
> URL: https://issues.apache.org/jira/browse/HADOOP-3578
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Amar Kamat
> Assignee: Amar Kamat
> Attachments: hadoop-3578-branch-20-example.patch,
> HADOOP-3578-v2.6.patch, HADOOP-3578-v2.7.patch
>
>
> Currently the jobclient accesses the {{mapred.system.dir}} to add job
> details. Hence the {{mapred.system.dir}} has the permissions of
> {{rwx-wx-wx}}. This could be a security loophole where the job files might
> get overwritten/tampered after the job submission.
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