[jira] [Assigned] (OOZIE-3056) Implement new mechanism to specify ShareLibs for workflow actions

["Peter Cseh (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OOZIE-3056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Peter Cseh reassigned OOZIE-3056:
---------------------------------

    Assignee: Peter Cseh

> Implement new mechanism to specify ShareLibs for workflow actions
> -----------------------------------------------------------------
>
>                 Key: OOZIE-3056
>                 URL: https://issues.apache.org/jira/browse/OOZIE-3056
>             Project: Oozie
>          Issue Type: New Feature
>          Components: core
>    Affects Versions: 5.0.0
>            Reporter: Attila Sasvari
>            Assignee: Peter Cseh
>            Priority: Major
>             Fix For: 5.0.0
>
>
> OOZIE-2687 introduces the {{launcher}} element for workflows:
> {code}
> <launcher>
>             <memory>1024</memory>
>             <vcores>1</vcores>
>             <java-opts>-Dsome.property=true -XX:+RandomJVMSwitch</java-opts>
>             <env>key=value</env>
>             <queue>root.oozie</queue>
>             <sharelib>spark,hive</sharelib>
>         </launcher>
> {code}
> The purpose of this ticket is to discuss and implement new mechanism for handling ShareLib. 
> {{addActionShareLib}} in {{JavaActionExecutor}} should adjusted. Regarding "precedence order":
> if global and an action level {{launcher}} and {{configuration}} (e.g. {{oozie.action.sharelib.for.#ACTIONTYPE#}}) tries to override the sharelib the following should apply:
> {quote} 
> config properties defined in an action's <configuration> have priority over an action's <job-xml>, which has priority over the global section's <configuration> and <job-xml>, which has priority over the action defaults in oozie-site, and so on.
> {quote}
> Here we have multiple choices how to handle sharelib:
> - Alternative 1: override sharelib in a way that is consistent with current way of handling Oozie configuration settings.
> - Alternative 2: make sharelib additive
> -- For example, if there is a global {{launcher}} with {{sharelib}} element in a workflow that includes multiple ShareLibs (e.g. A,B), and  {{oozie.action.sharelib.for.#ACTIONTYPE#}} is also specified for an action's configuration (e.g. C,D), then we take the union of the specified entities (A,B,C,D would be included). 
> -- It's inconsistent with everything else



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