[jira] [Commented] (OOZIE-2601) Ability to use local paths for the sharelib

["Rohini Palaniswamy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OOZIE-2601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16291532#comment-16291532 ] 

Rohini Palaniswamy commented on OOZIE-2601:
-------------------------------------------

I think this can be simplified a lot by just adding file:///usr/lib/hive/lib/* directly to yarn classpath setting. Listing all the jars in that directory from the Oozie node and adding that to classpath seems wasteful.

> Ability to use local paths for the sharelib
> -------------------------------------------
>
>                 Key: OOZIE-2601
>                 URL: https://issues.apache.org/jira/browse/OOZIE-2601
>             Project: Oozie
>          Issue Type: New Feature
>    Affects Versions: oya
>            Reporter: Robert Kanter
>            Assignee: Attila Sasvari
>             Fix For: oya, 5.0.0b1
>
>         Attachments: OOZIE-2601-01.patch, OOZIE-2601-03.patch, OOZIE-2601-05.patch, OOZIE-2601-06.patch, OOZIE-2601-07.patch, OOZIE-2601-09.patch, OOZIE-2601-10.patch, OOZIE-2601-11.patch
>
>
> With OOZIE-2590, as part of OOZIE-1770 Oozie on Yarn work, Oozie now has full control over the classpath given to the Launcher AM.  In a cluster where all nodes have everything installed locally (in the same paths), it should be possible to have the Launcher AM reference the local jars instead of having to localize them from HDFS.
> For example, if you have Hive installed on all nodes at {{/usr/lib/hive/}} and all Hive jars under {{/usr/lib/hive/lib/}}, we could have the Launcher AM add {{/usr/lib/hive/lib}} to its classpath.  This saves on the overhead of localizing the same jars from the hive sharelib in HDFS.  
> I think the best way to implement this is to augment the [Sharelib Mapping File|https://oozie.apache.org/docs/4.2.0/AG_Install.html#Oozie_Share_Lib] feature to accept {{file:///}} paths.
> If we had this also work with the "oozie" sharelib and the Oozie jars in the individual sharelibs (e.g. have the Mapping file take comma-separated dirs/jars), then in a cluster with everything installed on all of the nodes, you wouldn't need to bother with the sharelib at all!



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