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

["Robert Kanter (JIRA)" <ji...@apache.org>]

Robert Kanter created OOZIE-2601:
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             Summary: 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
             Fix For: oya


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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