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https://issues.apache.org/jira/browse/YARN-690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13660388#comment-13660388
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Vinod Kumar Vavilapalli commented on YARN-690:
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Bobby, the fix went in a little too fast for any of us to notice, you should
give others a bit of time to be able to look at it. Tx.
While this is a quick fix that should help, we should think of more long term
solutions - specifically looking for correct exceptions etc. After our recent
exception work, mainly after YARN-628 and MAPREDUCE-5254, we can look for
IOException specifically. Is that enough?
> RM exits on token cancel/renew problems
> ---------------------------------------
>
> Key: YARN-690
> URL: https://issues.apache.org/jira/browse/YARN-690
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 3.0.0, 0.23.7, 2.0.5-beta
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Blocker
> Fix For: 3.0.0, 2.0.5-beta, 0.23.8
>
> Attachments: YARN-690.patch, YARN-690.patch
>
>
> The DelegationTokenRenewer thread is critical to the RM. When a
> non-IOException occurs, the thread calls System.exit to prevent the RM from
> running w/o the thread. It should be exiting only on non-RuntimeExceptions.
> The problem is especially bad in 23 because the yarn protobuf layer converts
> IOExceptions into UndeclaredThrowableExceptions (RuntimeException) which
> causes the renewer to abort the process. An UnknownHostException takes down
> the RM...
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