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Posted to mapreduce-issues@hadoop.apache.org by "Robert Kanter (JIRA)" <ji...@apache.org> on 2016/02/19 02:07:18 UTC

[jira] [Commented] (MAPREDUCE-6613) Change mapreduce.jobhistory.jhist.format default from json to binary

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15153476#comment-15153476 ] 

Robert Kanter commented on MAPREDUCE-6613:
------------------------------------------

+1 for 3.0.
Will commit tomorrow if nobody objects.

> Change mapreduce.jobhistory.jhist.format default from json to binary
> --------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6613
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6613
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>    Affects Versions: 2.8.0
>            Reporter: Ray Chiang
>            Assignee: Ray Chiang
>            Priority: Minor
>         Attachments: MAPREDUCE-6613.001.patch
>
>
> MAPREDUCE-6376 added a configuration setting to set up .jhist internal format:
> mapreduce.jobhistory.jhist.format
> Currently, the default is "json".  Changing the default to "binary" allows faster parsing, but with the downside of making the file not output friendly by using "hadoop fs cat".



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