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Posted to dev@hive.apache.org by "Ashish Thusoo (JIRA)" <ji...@apache.org> on 2008/12/01 18:01:50 UTC

[jira] Updated: (HIVE-9) [hive] redundant columns being passed in group by stage 1

     [ 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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