[jira] [Commented] (HIVE-3072) Hive List Bucketing - DDL support

["Lefty Leverenz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-3072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14049667#comment-14049667 ] 

Lefty Leverenz commented on HIVE-3072:
--------------------------------------

This is documented in the wiki here:

* [Language Manual -- DDL -- Skewed Tables | https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-SkewedTables]

> Hive List Bucketing - DDL support
> ---------------------------------
>
>                 Key: HIVE-3072
>                 URL: https://issues.apache.org/jira/browse/HIVE-3072
>             Project: Hive
>          Issue Type: New Feature
>          Components: SQL
>            Reporter: Gang Tim Liu
>            Assignee: Gang Tim Liu
>             Fix For: 0.10.0
>
>         Attachments: HIVE-3072.patch, HIVE-3072.patch.1, HIVE-3072.patch.2, HIVE-3072.patch.3, HIVE-3072.patch.4, HIVE-3072.patch.5, HIVE-3072.patch.6, HIVE-3072.patch.7
>
>
> If a hive table column has skewed keys, query performance on non-skewed key is always impacted. Hive List Bucketing feature will address it:
> https://cwiki.apache.org/Hive/listbucketing.html
> This jira issue will track DDL change for the feature. It's for both single skewed column and multiple columns.



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