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https://issues.apache.org/jira/browse/MAPREDUCE-5275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13673560#comment-13673560
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Daryn Sharp commented on MAPREDUCE-5275:
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It's been annotated, although commented out, as far back as branch-0.20.203.
The annotations are not commented out in branch-21 and later.
A number of methods in the TC were added in Jan 2010 to branch-21 via
MAPREDUCE-143. The methods were annotated private. The backport of the patch
to branch-20 commented out the annotations, as seemed somewhat common at the
time - probably dependency issues.
If you agree there's not a compelling reason to restore broken methods never
intended to be public, could you please revert the patch?
> Mapreduce API: TokenCache incompatibility issues with MR1
> ---------------------------------------------------------
>
> Key: MAPREDUCE-5275
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5275
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Reporter: Zhijie Shen
> Assignee: Mayank Bansal
> Fix For: 2.1.0-beta
>
> Attachments: MAPREDUCE-5275-trunk-1.patch,
> MAPREDUCE-5275-trunk-2.patch, MAPREDUCE-5275-trunk-3.patch,
> MAPREDUCE-5275-trunk-4.patch
>
>
> There're following incompatibility issues:
> * Token<DelegationTokenIdentifier> getDelegationToken(Credentials, String) is
> removed
> * Credentials loadTokens(String, Configuration) changes to Credentials
> loadTokens(String, JobConf)
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