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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-331) [hive] implement co-group
Date Tue, 10 Mar 2009 00:55:50 GMT

    [ https://issues.apache.org/jira/browse/HIVE-331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12680342#action_12680342
] 

Namit Jain commented on HIVE-331:
---------------------------------

The idea was to merge different rows:

For eg:

A  1 2
A  3 4
A  5


should yield 1 row

A 1 2 3 4 5


I was mistaken about co-group. I thought, it did that. I agree, the user can always write
a custom reducer for that. The idea was to make it simpler.
But, after looking at the documentation of co-group, this is redundant




> [hive] implement co-group
> -------------------------
>
>                 Key: HIVE-331
>                 URL: https://issues.apache.org/jira/browse/HIVE-331
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>
> Equivalent of co-group should be supported in Hive

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