[jira] [Reopened] (OOZIE-2869) Ability to add/remove MapReduce jars from action classpath.

["Andras Piros (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OOZIE-2869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andras Piros reopened OOZIE-2869:
---------------------------------
      Assignee: Andras Piros  (was: Peter Cseh)

On real clusters, {{launcherConf}} might not be populated. We fall back to {{ConfigurationService.get().getConf()}} in such cases.

Also, by default Hive2 and Java actions should also load MapReduce sharelib files.

> Ability to add/remove MapReduce jars from action classpath.
> -----------------------------------------------------------
>
>                 Key: OOZIE-2869
>                 URL: https://issues.apache.org/jira/browse/OOZIE-2869
>             Project: Oozie
>          Issue Type: Sub-task
>          Components: action
>    Affects Versions: 5.0.0
>            Reporter: Andras Piros
>            Assignee: Andras Piros
>             Fix For: 5.0.0b1
>
>         Attachments: OOZIE-2869.001.patch
>
>
> Since Oozie On YARN doesn't fire a map only job to fire all the other applications (hence the transition from {{LauncherMapper}} to {{LauncherAM}}), no need to bundle the MapReduce JARs within Oozie's default sharelib.
> Nevertheless, it's a common, but discouraged use case that MapReduce tasks are fired using Java Action. So we need some default {{mapreduce}} sharelib that can be used by customers after OOZIE-2601 will have been implemented:
> # by default, create a sharelib named {{mapreduce}} which will contain the MR jars using local paths as those jars are on every machine
> # users can add mapreduce jars to any action using {{oozie.action.sharelib.for.ACTION}} just like now. They could add MR jars into Java, Spark or Shell actions easily



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