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From "Ravi Prakash (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3936) Clients should not enforce counter limits
Date Tue, 12 Mar 2013 18:53:13 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600327#comment-13600327
] 

Ravi Prakash commented on MAPREDUCE-3936:
-----------------------------------------

bq. are you saying that we should remove the enforcement of limits in AMs, since the user
could choose to do that by modifying the AM themselves?

Yes! Lets not artficially create limits and enforce them.

I am also a lot less worried about the HS. Its the same case if as a user I created a job
with a billion tasks. The HS should handle that / degrade gracefully. 
                
> Clients should not enforce counter limits 
> ------------------------------------------
>
>                 Key: MAPREDUCE-3936
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3936
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv1
>            Reporter: Tom White
>            Assignee: Tom White
>         Attachments: MAPREDUCE-3936.patch, MAPREDUCE-3936.patch
>
>
> The code for enforcing counter limits (from MAPREDUCE-1943) creates a static JobConf
instance to load the limits, which may throw an exception if the client limit is set to be
lower than the limit on the cluster (perhaps because the cluster limit was raised from the
default).

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