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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-113) support of distribute by and sort by
Date Thu, 04 Dec 2008 20:28:46 GMT

     [ https://issues.apache.org/jira/browse/HIVE-113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao updated HIVE-113:
----------------------------

    Attachment: HIVE-113-2.patch

Corrected one testcase output.

> 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
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         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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