[
https://issues.apache.org/jira/browse/OOZIE-2983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110783#comment-16110783
]
Andras Piros commented on OOZIE-2983:
-------------------------------------
[~rkanter] +1 on the original approach, your patch seems pretty advanced (apart
from TODOs). I like the idea of Oozie being able to stream the launcher AM logs
on its own, rather than relying on a running JobHistoryServer and the client's
capability of following redirects in the first place.
I'd be curious how Spark does that, though. [~wilfreds] can you point to the
Spark sources where Spark does the redirect? I [might be
missing|https://github.com/apache/spark/blob/6735433cde44b3430fb44edfff58ef8149c66c13/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala#L376-L380]
the place.
> Stream the Launcher AM Logs
> ---------------------------
>
> Key: OOZIE-2983
> URL: https://issues.apache.org/jira/browse/OOZIE-2983
> Project: Oozie
> Issue Type: Sub-task
> Affects Versions: 5.0.0
> Reporter: Robert Kanter
> Assignee: Andras Piros
> Attachments: OOZIE-2983.001.patch
>
>
> Because OYA will get rid of the MR-based Launcher Job and have a custom AM
> instead, the Launcher Job info and logs will no longer show up in the JHS. It
> will show up in the ATSv2, however, the ATSv2 isn't quite ready yet and that
> doesn't help users on older versions of Hadoop. Launcher Jobs will stil show
> up in the RM, but the RM doesn't remember things forever (and can be quite
> short depending on cluster busyness and configs).
> We should have Oozie serve those logs itself (which would also be a nice
> thing to have anyway, as the launcher logs are typically the most useful).
> The code for reading those files is pretty easy to call. The yarn CLI, JHS,
> and this [Aggregated Log Files
> Exploder|https://github.com/rkanter/ALFExploder] tool I wrote all use it; the
> latter proves that you can do it outside of Hadoop.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
