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https://issues.apache.org/jira/browse/MAPREDUCE-3639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182990#comment-13182990
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Vinod Kumar Vavilapalli commented on MAPREDUCE-3639:
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Argh.. this has become quite a mess. Seems like the underlying problem is that
{{FileSystem.getCanonicalServiceName()}} is null for Viewfs. Not sure of a
clean solution, but I can see that the current patch should let clients with
viewfs get delegation tokens correctly.
Let us separate the test-failure testGetTokensForHftpFS(), though if I
understand this whole mess correctly, that is caused by HADOOP-7808 itself.
> 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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