[OOZIE-2909] LauncherAM: rewrite UGI calls

• Type: Sub-task
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 5.0.0b1
• Assignee: Andras Piros
• Reporter: Peter Bacsko
• Created: 18/May/17 12:56
• Updated: 21/Jun/21 07:34
• Resolved: 22/Sep/17 11:36

Description

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.

Issue Links

• is duplicated by: OOZIE-2971 Print out current tokens in LauncherAM
• links to: ReviewBoard