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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3010) ConcurrentModificationException from org.apache.hadoop.ipc.Server$Responder in JobTracker
Date Thu, 03 Apr 2008 17:56:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585216#action_12585216
] 

Raghu Angadi commented on HADOOP-3010:
--------------------------------------

I just commented this. Unit Test omission is explained in the 4th comment above.

> ConcurrentModificationException from org.apache.hadoop.ipc.Server$Responder in JobTracker
> -----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3010
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3010
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 0.16.1
>            Reporter: Amar Kamat
>            Assignee: Raghu Angadi
>             Fix For: 0.17.0
>
>         Attachments: HADOOP-3010.patch
>
>
> I see lot of these in my JobTracker log 
> {noformat}
> WARN org.apache.hadoop.ipc.Server: Exception in Responder java.util.ConcurrentModificationException
>         at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
>         at java.util.HashMap$KeyIterator.next(HashMap.java:827)
>         at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1010)
>         at org.apache.hadoop.ipc.Server$Responder.run(Server.java:475)
> {noformat}

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