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From "Ashish Thusoo (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-9) [hive] redundant columns being passed in group by stage 1
Date Mon, 01 Dec 2008 17:01:50 GMT

     [ https://issues.apache.org/jira/browse/HIVE-9?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashish Thusoo updated HIVE-9:
-----------------------------

    Component/s: Query Processor

> [hive] redundant columns being passed in group by stage 1
> ---------------------------------------------------------
>
>                 Key: HIVE-9
>                 URL: https://issues.apache.org/jira/browse/HIVE-9
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>
> In the first map-reduce stage, all input columns are copied currently. Instead, we should
walk over the filter and projections for that destination and only copy columns which occur
there

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