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From "Chinna Rao Lalam (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2495) set mapred.reduce.tasks does not work
Date Tue, 15 Nov 2011 13:41:52 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150487#comment-13150487
] 

Chinna Rao Lalam commented on HIVE-2495:
----------------------------------------

I have verified with trunk code if set a value for "mapred.reduce.tasks" this property it
will take effect and it will start that many reducers.

Can u add u r scenario with little more details.

What is the suggested value for setting number of reducers is
http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/mapred/JobConf.html#setNumReduceTasks(int).
                
> set mapred.reduce.tasks does not work
> -------------------------------------
>
>                 Key: HIVE-2495
>                 URL: https://issues.apache.org/jira/browse/HIVE-2495
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Jander G
>
> Setting mapred.reduce.tasks does not work. In my opinion, we should provider a property
(eg. mapred.reduce.tasks.force) to make "mapred.reduce.tasks" working. Thus there is a way
to set a constant reduce for experienced people.

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