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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-690) RM exits on token cancel/renew problems
Date Thu, 16 May 2013 20:21:16 GMT

     [ https://issues.apache.org/jira/browse/YARN-690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daryn Sharp updated YARN-690:
-----------------------------

    Attachment: YARN-690.patch

1-line change to a catch.  No test added due to difficulty of testing calls to System.exit.
                
> 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
>         Attachments: 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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