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Posted to mapreduce-issues@hadoop.apache.org by "Harsh J (JIRA)" <ji...@apache.org> on 2012/07/09 04:30:34 UTC
[jira] [Resolved] (MAPREDUCE-1109) ConcurrentModificationException
in jobtracker.jsp
[ https://issues.apache.org/jira/browse/MAPREDUCE-1109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harsh J resolved MAPREDUCE-1109.
--------------------------------
Resolution: Not A Problem
I've not seen this CME occur on the JT UI in 1.x nor heard any further reports of it either. I'm resolving as Not a Problem for now.
> 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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