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Posted to mapreduce-issues@hadoop.apache.org by "sam liu (JIRA)" <ji...@apache.org> on 2014/12/23 05:07:13 UTC

[jira] [Commented] (MAPREDUCE-6204) TestJobCounters should use new properties instead JobConf.MAPRED_TASK_JAVA_OPTS

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14256575#comment-14256575 ] 

sam liu commented on MAPREDUCE-6204:
------------------------------------

In Hadoop 2.x, the property JobConf.MAPRED_TASK_JAVA_OPTS is deprecated, and hadoop will ignore this property directly without replacing its new values(MAPRED_MAP_TASK_JAVA_OPTS and MAPRED_REDUCE_TASK_JAVA_OPTS). 

This issue will cause test TestJobCounters fail on PPC64 platform sometimes, as PPC64 JVM sometimes comsumes more memory when executing map/reduce tasks and might encounter JVM crashing issue once the default heap size is exhausted. 

> TestJobCounters should use new properties instead JobConf.MAPRED_TASK_JAVA_OPTS
> -------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6204
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6204
>             Project: Hadoop Map/Reduce
>          Issue Type: Test
>          Components: test
>    Affects Versions: 2.6.0
>            Reporter: sam liu
>            Assignee: sam liu
>            Priority: Minor
>




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