You are viewing a plain text version of this content. The canonical link for it is here.

Posted to mapreduce-issues@hadoop.apache.org by "Bikas Saha (Assigned) (JIRA)" <ji...@apache.org> on 2012/02/21 20:21:46 UTC

[jira] [Assigned] (MAPREDUCE-3755) Add the equivalent of JobStatus to end of JobHistory file

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikas Saha reassigned MAPREDUCE-3755:
-------------------------------------

    Assignee: Bikas Saha
    
> Add the equivalent of JobStatus to end of JobHistory file 
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-3755
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3755
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobhistoryserver, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Arun C Murthy
>            Assignee: Bikas Saha
>            Priority: Critical
>             Fix For: 0.23.2
>
>
> In MR1 we have the notion of CompletedJobStatus store to aid fast responses to job.getStatus. We need the equivalent for MR2, an option is to add the jobStatus to the end of the JobHistory file to which the JHS can easily jump ahead to and serve the query, it should also cache this for a fair number of recently completed jobs.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira