[jira] [Updated] (MAPREDUCE-4565) Backport MR-2855 to branch-1: ResourceBundle lookup during counter name resolution takes a lot of time

["Karthik Kambatla (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated MAPREDUCE-4565:
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     Target Version/s:   (was: 0.23.2)
    Affects Version/s:     (was: 0.23.0)
                       1.0.3
        Fix Version/s:     (was: 0.23.2)
               Labels:   (was: mrv2)
           Issue Type: Improvement  (was: Bug)
         Hadoop Flags:   (was: Reviewed)
    
> 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: Siddharth Seth
>
> 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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