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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6687) Allow specifing java home via job configuration
Date Wed, 27 Apr 2016 12:59:13 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15260083#comment-15260083

Jason Lowe commented on MAPREDUCE-6687:

This can already be accomplished by setting the appropriate value for JAVA_HOME in mapreduce.map.env
and mapreduce.reduce.env or mapred.child.env for the tasks and yarn.app.mapreduce.am.env for
the ApplicationMaster.

> Allow specifing java home via job configuration
> -----------------------------------------------
>                 Key: MAPREDUCE-6687
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6687
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: applicationmaster
>            Reporter: He Tianyi
>            Priority: Minor
> Suggest allowing user to use a preferred JVM implementation (or version) by specifying
java home via JobConf, to launch Map/Reduce tasks. 
> Especially useful for running A/B tests on real workload or benchmark between JVM implementations.

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