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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-530) Map Join followup: optimize number of map-reduce jobs
Date Mon, 29 Jun 2009 17:24:47 GMT

    [ https://issues.apache.org/jira/browse/HIVE-530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12725259#action_12725259
] 

Namit Jain commented on HIVE-530:
---------------------------------

Thats right - I have changed the test to pass a correct configuration, and will load the new
patch soon

> Map Join followup: optimize number of map-reduce jobs
> -----------------------------------------------------
>
>                 Key: HIVE-530
>                 URL: https://issues.apache.org/jira/browse/HIVE-530
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.4.0
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.530.1.patch, hive.530.2.patch, hive.530.3.patch
>
>
> Instead of creating a temporary destination after every mapJoin, avoid where-ever possible.
> Also, replace the Select after MapJoin with a ForwardOperator

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