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https://issues.apache.org/jira/browse/MAPREDUCE-3475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Foley updated MAPREDUCE-3475:
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    Target Version/s: 1.0.0, 0.22.1  (was: 1.0.0)
       Fix Version/s: 1.0.0

Taking Owen's comment for a +1, I have committed this patch to 1.0.0 and 
branch-1.
Leaving the jira open with the expectation that this same fix is needed in 
v0.22.
                
> JT can't renew its own tokens
> -----------------------------
>
>                 Key: MAPREDUCE-3475
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3475
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.20.205.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>             Fix For: 1.0.0
>
>         Attachments: MAPREDUCE-3475-1.patch, MAPREDUCE-3475.patch
>
>
> When external systems submit jobs whose tasks need to submit additional jobs 
> (such as oozie/pig), they include their own MR token used to submit the job.  
> The token's renewer may not allow the JT to renew the token.  The JT log will 
> include very long SASL/GSSAPI exceptions when the job is submitted.  It is 
> also dubious for the JT to renew its token because it renders the expiry as 
> meaningless since the JT will renew its own token until the max lifetime is 
> exceeded.
> After speaking with Owen & Jitendra, the immediate solution is for the JT to 
> not attempt to renew its own tokens.

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