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https://issues.apache.org/jira/browse/MAPREDUCE-4565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439124#comment-13439124
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Siddharth Seth commented on MAPREDUCE-4565:
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+1
> Backport MR-2855 to branch-1: ResourceBundle lookup during counter name
> resolution takes a lot of time
> ------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4565
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4565
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 1.0.3
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Attachments: branch1-MR-4565.patch, branch1-MR-4565.patch
>
>
> Loading a job status page in trunk takes a lot of time, and it seems like
> most of the time is spent resolving counter names. Looking through the JDK
> source, ResourceBundle.getBundle(String) ends up calling getClassContext()
> which is not very efficient. I think if we pass our own classloader manually
> it will be faster. In Counters.incrAllCounters, we may also be able to avoid
> setting the counter name if one is already set.
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