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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10475) ConcurrentModificationException in AbstractDelegationTokenSelector.selectToken()
Date Thu, 10 Apr 2014 20:34:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13965807#comment-13965807
] 

Daryn Sharp commented on HADOOP-10475:
--------------------------------------

I don't think this patch fixes the problem.  The ArrayList constructor is also iterating over
the values in the token map to make a copy, so it too can encounter the CME.  The race is
now smaller but the problem remains.

> ConcurrentModificationException in AbstractDelegationTokenSelector.selectToken()
> --------------------------------------------------------------------------------
>
>                 Key: HADOOP-10475
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10475
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.4.0
>            Reporter: Arpit Gupta
>            Assignee: Jing Zhao
>             Fix For: 2.5.0
>
>         Attachments: HADOOP-10475.000.patch, HADOOP-10475.001.patch, HADOOP-10475.002.patch
>
>
> While running a hive job on a HA cluster saw ConcurrentModificationException in AbstractDelegationTokenSelector.selectToken()



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