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From "Carl Steinbach (JIRA)" <>
Subject [jira] Updated: (HIVE-113) support of distribute by and sort by
Date Fri, 23 Jul 2010 09:33:58 GMT


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:
>             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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