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https://issues.apache.org/jira/browse/MAPREDUCE-181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773227#action_12773227
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Devaraj Das commented on MAPREDUCE-181:
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Forgot to mention - this patch is a modified version of Amar's last patch.
> Secure job submission
> ----------------------
>
> Key: MAPREDUCE-181
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-181
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Reporter: Amar Kamat
> Assignee: Devaraj Das
> Attachments: 181-1.patch, hadoop-3578-branch-20-example-2.patch,
> hadoop-3578-branch-20-example.patch, HADOOP-3578-v2.6.patch,
> HADOOP-3578-v2.7.patch, MAPRED-181-v3.32.patch, MAPRED-181-v3.8.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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