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https://issues.apache.org/jira/browse/OOZIE-2909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16169852#comment-16169852
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Peter Cseh commented on OOZIE-2909:
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[~rkanter], [~pbacsko], [~asasvari] please review my last changeset.
> LauncherAM: rewrite UGI calls
> -----------------------------
>
> Key: OOZIE-2909
> URL: https://issues.apache.org/jira/browse/OOZIE-2909
> Project: Oozie
> Issue Type: Sub-task
> Reporter: Peter Bacsko
> Assignee: Peter Cseh
> Priority: Blocker
> Attachments: OOZIE-2909-001.patch, OOZIE-2909-002.patch,
> OOZIE-2909-003.patch, OOZIE-2909-004.patch, OOZIE-2909-005.patch,
> OOZIE-2909-006.patch, OOZIE-2909-007.patch
>
>
> There are two problems in LauncherAM:
> 1) In a kerberized cluster, we have to use {{UGI.getLoginUser()}} even though
> a call to {{createRemoteUser()}} should be enough, just like in
> {{MRAppMaster.java}}. Reference code:
> https://github.com/apache/hadoop/blob/3ed3062fe3979ff55a411b730a8eee2b2c96d6b3/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java#L1718-L1726
> 2) It's enough if we wrap the whole LauncherAM logic in a single {{doAs()}}
> call. No need for multiple {{doAs()}}, just makes the whole thing more
> complicated.
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