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From "Ahmed Radwan (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4129) Lots of unneeded counters log messages
Date Wed, 11 Apr 2012 02:38:17 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_rev2.patch

Thanks Tom for reviewing this! You are right. Also checking they are different doesn't seem
to be sufficient, because the name could have been cut because of the length limits. I have
updated the patch to check if the name was found in the legacyMap before printing the log
message. Please let me know if you have further comments.
                
> 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, MAPREDUCE-4129_rev2.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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