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https://issues.apache.org/jira/browse/MAPREDUCE-3942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228029#comment-13228029
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Siddharth Seth commented on MAPREDUCE-3942:
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The patch looks good. It needs to be upmerged though.
Is the additional synchronization in ApplicationTokenIdentifier really required
? Doesn't look like any of the synchronized methods are called concurrently.
> Randomize master key generation for ApplicationTokenSecretManager and roll it
> every so often
> --------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3942
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3942
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mrv2, security
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.23.2
>
> Attachments: MAPREDUCE-3942-20120307.1.txt,
> MAPREDUCE-3942-20120307.txt
>
>
> - Master key for authentication of AMs need to be automatically generated.
> - The key needs to be rolled every so often but AMs with old keys should
> continue to be able to talk to the RM.
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