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Tom White commented on MAPREDUCE-4129:
--------------------------------------
In your patch, the warning is printed every time a new group is created, even if the old and
new names are the same. Don't you need to check that they are different?
> 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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