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Date: Fri, 23 Jul 2010 05:33:58 -0400 (EDT)
From: "Carl Steinbach (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Updated: (HIVE-113) support of distribute by and sort by
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     [ https://issues.apache.org/jira/browse/HIVE-113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carl Steinbach updated HIVE-113:
--------------------------------

    Fix Version/s: 0.3.0
      Component/s: Query Processor

> support of distribute by and sort by
> ------------------------------------
>
>                 Key: HIVE-113
>                 URL: https://issues.apache.org/jira/browse/HIVE-113
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>             Fix For: 0.3.0
>
>         Attachments: HIVE-113-1.patch, HIVE-113-2.patch
>
>
> Currently Hive supports "cluster by" which puts the columns into map-reduce key.  Hadoop map-reduce actually allows different partitioning (we call distribute) keys and sorting keys.
> In Hive language, we will add "distribute by" for specifying the partition key, and "sort by" for specifying the sort key. "cluster by" will be a short-cut for "distribute by" and "sort by" with the same keys.

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