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From "Ahmed Radwan (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4129) Lots of unneeded counters log messages
Date Mon, 09 Apr 2012 23:53:17 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Ahmed Radwan updated MAPREDUCE-4129:

    Attachment: MAPREDUCE-4129.patch

Attaching a patch addressing this issue. The patch modifies the behavior to only write the
log message the first time the oldGroupName is found, instead of every time getGroup(..) is
I don't think we need a test case for this change as it is a straightforward change in message
> Lots of unneeded counters log messages
> --------------------------------------
>                 Key: MAPREDUCE-4129
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4129
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.1
>            Reporter: Ahmed Radwan
>            Assignee: Ahmed Radwan
>             Fix For: 0.23.2
>         Attachments: MAPREDUCE-4129.patch
> Huge number of the same WARN messages are written. We only need to write each distinct
message once. The messages are of the form:
> {code}
> 2012-04-05 03:55:04,166 WARN mapreduce.Counters: Group {oldGroup} is deprecated. Use
{newGroup} instead
> {code}

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