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Posted to mapreduce-issues@hadoop.apache.org by "Mostafa Elhemali (JIRA)" <ji...@apache.org> on 2012/12/02 22:05:58 UTC

[jira] [Updated] (MAPREDUCE-3115) OOM When the value for the property "mapred.map.multithreadedrunner.class" is set to MultithreadedMapper instance.

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mostafa Elhemali updated MAPREDUCE-3115:
----------------------------------------

    Attachment: MAPREDUCE-3115.2.patch
    
> OOM When the value for the property "mapred.map.multithreadedrunner.class" is set to MultithreadedMapper instance.
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3115
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3115
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv1
>    Affects Versions: 0.23.0, 1.0.0
>         Environment: NA
>            Reporter: Bhallamudi Venkata Siva Kamesh
>         Attachments: MAPREDUCE-3115.2.patch, MAPREDUCE-3115.patch
>
>
> When we set the value for the property *mapred.map.multithreadedrunner.class* as instance of MultithreadedMapper, using MultithreadedMapper.setMapperClass(), it simply throws IllegalArgumentException.
> But when we set the same property, using job's conf object using job.getConfiguration().setClass(*mapred.map.multithreadedrunner.class*, MultithreadedMapper.class, Mapper.class), throws OOM.

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