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https://issues.apache.org/jira/browse/MAPREDUCE-217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-217.
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Resolution: Fixed
This is possible to do in YARN. Closing as fixed.
> Tasks to run on a different jvm version than the TaskTracker
> ------------------------------------------------------------
>
> Key: MAPREDUCE-217
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-217
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Environment: linux
> Reporter: Koji Noguchi
> Assignee: Amar Kamat
> Attachments: mapreduce-217-v1.0.patch, mapreduce-217-v1.1.patch
>
>
> We use 32-bit jvm for TaskTrackers.
> Sometimes our users want to call 64-bit JNI libraries from their tasks.
> This requires tasks to be running on 64-bit jvm.
> On Solaris, you can simply use -d32/-d64 to choose, but on Linux, it's on a
> completely different package.
> So far, tasks run on the same jvm version as the TaskTracker.
> {noformat}
> // use same jvm as parent
> File jvm = new File(new File(System.getProperty("java.home"), "bin"),
> "java");
> {noformat}
> Is it possible to let users provide a java home path
> or let them choose from a pre-selected list of paths?
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