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https://issues.apache.org/jira/browse/OOZIE-1461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13715835#comment-13715835
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Rohini Palaniswamy commented on OOZIE-1461:
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bq. why do we need #3? I think this is not necessary. If you want a performance
boost just use #2. If you are using sharelibs, you can just set the config for
#2 and it will work, nothing additional to do.
Two reasons. One - deploying to sharelib now falls on the admin or the
startup script. Two - which is the primary reason is that every time the
sharelib jars are replaced the jobs that are running will fail because the jar
with which localization (DistributedCache) was done has changed. We cannot keep
asking users to rerun their jobs every time oozie server is restarted. And long
running jobs failing will impact SLAs heavily which many teams cannot afford.
> provide an option to auto-deploy launcher jar onto HDFS system libpath
> ----------------------------------------------------------------------
>
> Key: OOZIE-1461
> URL: https://issues.apache.org/jira/browse/OOZIE-1461
> Project: Oozie
> Issue Type: Bug
> Affects Versions: trunk
> Reporter: Ryota Egashira
> Assignee: Ryota Egashira
> Fix For: trunk
>
>
> after OOZIE-1311, 1315, when oozie.action.ship.launcher.jar is false,
> launcher jar is shipped from sharelib, but it requires manual process for
> admin people to upload jar files onto the sharelib at server-start time,
> before actually starting running workflow actions. This JIRA to provide an
> option to remove the manual process, and make oozie server (ActionService) to
> automatically create and upload launcher jar files onto HDFS (tmp directory
> under oozie.service.WorkflowAppService.system.libpath), and allow workflow
> actions to consume from there. every time oozie server starts, it
> automatically creates a new directory to upload launcher jars to, and also
> purges stale directories previously created (older than 7 days,
> configurable).
> if false (which is current default). the behavior is the same with previous,
> launcher jars provided from sharelib (when
> oozie.action.ship.launcher.jar=false) or each workflow action creates and
> ships launcher jar (when oozie.action.ship.launcher.jar=true)
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