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Posted to mapreduce-issues@hadoop.apache.org by "Chris Douglas (JIRA)" <ji...@apache.org> on 2009/10/14 09:28:31 UTC

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

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Douglas reopened MAPREDUCE-1109:
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This still exists in 0.20, right? Sorry, I only mentioned MAPREDUCE-679 because this was fixed as a detour in that issue and the fix should either be backported or changed to match whatever approach is agreed on here.

> 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: dhruba borthakur
>
> 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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