You are viewing a plain text version of this content. The canonical link for it is here.
Posted to mapreduce-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2013/07/03 16:40:21 UTC
[jira] [Commented] (MAPREDUCE-5221) Reduce side Combiner is not
used when using the new API
[ https://issues.apache.org/jira/browse/MAPREDUCE-5221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13699029#comment-13699029 ]
Karthik Kambatla commented on MAPREDUCE-5221:
---------------------------------------------
bq. Should we merge these patches into one patch?
Merging them into one patch/JIRA will make it a lot easier to comprehend. Thanks.
> Reduce side Combiner is not used when using the new API
> -------------------------------------------------------
>
> Key: MAPREDUCE-5221
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5221
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.0.4-alpha
> Reporter: Siddharth Seth
> Assignee: Tsuyoshi OZAWA
> Attachments: MAPREDUCE-5221.1.patch, MAPREDUCE-5221.2.patch, MAPREDUCE-5221.3.patch, MAPREDUCE-5221.4.patch
>
>
> If a combiner is specified using o.a.h.mapreduce.Job.setCombinerClass - this will silently ignored on the reduce side since the reduce side usage is only aware of the old api combiner.
> This doesn't fail the job - since the new combiner key does not deprecate the old key.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira