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https://issues.apache.org/jira/browse/MAPREDUCE-3850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205761#comment-13205761
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Daryn Sharp commented on MAPREDUCE-3850:
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Failed test is not related to this patch, and it has been failing since
yesterday.
> Avoid redundant calls for tokens in TokenCache
> ----------------------------------------------
>
> Key: MAPREDUCE-3850
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3850
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: security
> Affects Versions: 0.23.1, 0.24.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Attachments: MAPREDUCE-3850.patch
>
>
> The {{TokenCache}} will repeatedly call the same filesystem for tokens. This
> is inefficient and can easily be changed to only call each filesystem once.
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