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https://issues.apache.org/jira/browse/MAPREDUCE-3639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182871#comment-13182871
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Daryn Sharp commented on MAPREDUCE-3639:
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{{TokenCache#obtainTokensForNamenodesInternal}} needs the same null check on
{{getCanonicalServiceName}} as 205 does.
> TokenCache likely broken for FileSystems which don't issue delegation tokens
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-3639
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3639
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Priority: Blocker
> Attachments: MR3639.txt
>
>
> Ref HADOOP-7963.
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