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https://issues.apache.org/jira/browse/MAPREDUCE-3614?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated MAPREDUCE-3614:
-----------------------------------------------

       Fix Version/s: 0.23.2
    Target Version/s: 0.23.2  (was: 0.23.1)
              Status: Open  (was: Patch Available)

 - FindBugs warning is still not fixed as Jenkins reports.
 - Not sure why you need all the magic with the FileSystem objects, can you 
explain?
 - You can make {{MRAppMaster.MRAppMasterShutdownHook}} extend 
{{CompositeServiceShutdownHook}}
 - RMCommunicator: It seems unnatural to set killed final state if the job was 
running. I think you should set a flag with RMCommunicator similar to 
JobHistoryEventHandler.

JobHistoryEventHandler (JHEH):
 - Trivial: {{isSigTermed == false}} can be written as {{!isSigTermed}}
 - Again trivial: The sigterm flag will never go back to false from true. So 
the code snippet "while (isSigTermed && jobIt.hasNext()) .." can be rewritten 
as "if (isSigTermed) { while .. }"
 - For the same snippet, can you simply add a comment saying, we are doing this 
so as to drain everything and only write finish-events to shutdown as fast as 
possible.

The test seems very wired into the code. Can we instead do something like this:
 - Send 4 history events to JHEH and properly shutdown it and verify that 4 
events are logged.
 - Send 4 history events to JHEH and shut it down via SIGTERM and verify that 
only 1 job-finish event is logged.

bq. Is there a compelling need to maintain a parallel set of JobIds? Why not 
check the fileMap values to see if the writer is open?
+1.
                
>  finalState UNDEFINED if AM is killed by hand
> ---------------------------------------------
>
>                 Key: MAPREDUCE-3614
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3614
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Ravi Prakash
>            Assignee: Ravi Prakash
>             Fix For: 0.23.2
>
>         Attachments: MAPREDUCE-3614.branch-0.23.patch, MAPREDUCE-3614.patch, 
> MAPREDUCE-3614.patch, MAPREDUCE-3614.patch, MAPREDUCE-3614.patch
>
>
> Courtesy [~dcapwell]
> {quote}
> If the AM is running and you kill the process (sudo kill #pid), the State in 
> Yarn would be FINISHED and FinalStatus is UNDEFINED.  The Tracking UI would 
> say "History" and point to the proxy url (which will redirect to the history 
> server).
> The state should be more descriptive that the job failed and the tracker url 
> shouldn't point to the history server.
> {quote}

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