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Posted to dev@oozie.apache.org by "Alejandro Abdelnur (JIRA)" <ji...@apache.org> on 2013/04/19 22:49:15 UTC
[jira] [Commented] (OOZIE-1335) The launcher job should use uber
mode in Hadoop 2 by default
[ https://issues.apache.org/jira/browse/OOZIE-1335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636868#comment-13636868 ]
Alejandro Abdelnur commented on OOZIE-1335:
-------------------------------------------
Neat!!!!, this should be as simple as setting the uber flag in the core/src/main/conf/core-site.xml file, right?
> The launcher job should use uber mode in Hadoop 2 by default
> ------------------------------------------------------------
>
> Key: OOZIE-1335
> URL: https://issues.apache.org/jira/browse/OOZIE-1335
> Project: Oozie
> Issue Type: Bug
> Affects Versions: trunk
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Fix For: trunk
>
>
> In theory, running the launcher job in Hadoop 2's uber mode should make the overall action time faster because we don't need to launch as many JVMs.
> I tested this out on a few of the examples in a VM, and it seems to save about 10 - 50 seconds per action. While my testing wasn't scientific and was only on a single VM, setting the launcher job to run in uber mode by default is such a trivial change and should at least not make it slower that I think we should do it.
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