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Posted to mapreduce-issues@hadoop.apache.org by "zhangyubiao (JIRA)" <ji...@apache.org> on 2017/08/23 09:20:00 UTC

[jira] [Commented] (MAPREDUCE-5641) History for failed Application Masters should be made available to the Job History Server

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16138124#comment-16138124 ] 

zhangyubiao commented on MAPREDUCE-5641:
----------------------------------------

Though timelineserver show the application history  but  the killjob hdfs://user/readuser//.staging/job_1496915015540_XXXX  still left  in the fold.  So we can deal with this in the applicationhistory ? [~zjshen]

> History for failed Application Masters should be made available to the Job History Server
> -----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5641
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5641
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: applicationmaster, jobhistoryserver
>    Affects Versions: 2.2.0
>            Reporter: Robert Kanter
>         Attachments: MAPREDUCE-5641.patch, MAPREDUCE-5641.patch
>
>
> Currently, the JHS has no information about jobs whose AMs have failed.  This is because the History is written by the AM to the intermediate folder just before finishing, so when it fails for any reason, this information isn't copied there.  However, it is not lost as its in the AM's staging directory.  To make the History available in the JHS, all we need to do is have another mechanism to move the History from the staging directory to the intermediate directory.  The AM also writes a "Summary" file before exiting normally, which is also unavailable when the AM fails.  



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