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Posted to mapreduce-issues@hadoop.apache.org by "Harsh J (JIRA)" <ji...@apache.org> on 2012/05/12 14:54:49 UTC

[jira] [Commented] (MAPREDUCE-1109) ConcurrentModificationException in jobtracker.jsp

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13273977#comment-13273977 ] 

Harsh J commented on MAPREDUCE-1109:
------------------------------------

Nevermind the previous comment. Was meant for HADOOP-6801.
                
> ConcurrentModificationException in jobtracker.jsp
> -------------------------------------------------
>
>                 Key: MAPREDUCE-1109
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1109
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.20.1
>            Reporter: dhruba borthakur
>            Assignee: Harsh J
>         Attachments: MAPREDUCE-1109.patch, MAPREDUCE-1109.patch
>
>
> The jobtracker.jsp invoked methods tracker.runningJobs(), tracker.completedJobs() and tracker.failedJobs() but these methods are not synchronized and can cause ConcurrentModificationException if the JT is concurrently changing the contents of these datastructures.

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