[jira] [Commented] (MAPREDUCE-5487) In task processes, JobConf is unnecessarily loaded again in Limits

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753970#comment-13753970 ] 

Hadoop QA commented on MAPREDUCE-5487:
--------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12600640/MAPREDUCE-5487.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3971//console

This message is automatically generated.
                
> In task processes, JobConf is unnecessarily loaded again in Limits
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5487
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5487
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: performance, task
>    Affects Versions: 2.1.0-beta
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: MAPREDUCE-5487.patch
>
>
> Limits statically loads a JobConf, which incurs costs of reading files from disk and parsing XML.  The contents of this JobConf are identical to the one loaded by YarnChild (before adding job.xml as a resource).  Allowing Limits to initialize with the JobConf loaded in YarnChild would reduce task startup time.

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