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Posted to mapreduce-issues@hadoop.apache.org by "Harsh J (Commented) (JIRA)" <ji...@apache.org> on 2011/12/26 07:58:30 UTC
[jira] [Commented] (MAPREDUCE-3598) Old combiner doesn't support
counter, progress
[ https://issues.apache.org/jira/browse/MAPREDUCE-3598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13175900#comment-13175900 ]
Harsh J commented on MAPREDUCE-3598:
------------------------------------
This should be fixed with MAPREDUCE-3376
> Old combiner doesn't support counter, progress
> ----------------------------------------------
>
> Key: MAPREDUCE-3598
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3598
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.205.0
> Reporter: Liyin Liang
> Priority: Blocker
>
> After HADOOP-5382, old combiner's reduce is invoked with Reporter.NULL. So all the features in Reporter, e.g. counter, progress are not supported any more. The related code is as follows:
> {code:}
> while (values.more()) {
> combiner.reduce(values.getKey(), values, combineCollector,
> Reporter.NULL);
> values.nextKey();
> }
> {code}
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