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https://issues.apache.org/jira/browse/MAPREDUCE-3639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182942#comment-13182942
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Daryn Sharp commented on MAPREDUCE-3639:
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I think you can use {{NetUtils.addStaticResolution}} to dummy out the lookups
of "host".
bq. That check should not be present. getCanonicalServiceName will return null
for filesystems like viewfs. With that additional check - TokenCache will not
get tokens for the underlying filesystems.
Sigh, that's right, and one of the things I was trying to fix in an alt patch.
The view fs token caching is getting quite murky, but this at least makes it
work better, so +1...
> 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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