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Posted to dev@hive.apache.org by "Gang Tim Liu (JIRA)" <ji...@apache.org> on 2012/12/01 01:03:58 UTC
[jira] [Work started] (HIVE-3073) Hive List Bucketing - DML support
[ https://issues.apache.org/jira/browse/HIVE-3073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HIVE-3073 started by Gang Tim Liu.
> Hive List Bucketing - DML support
> ----------------------------------
>
> Key: HIVE-3073
> URL: https://issues.apache.org/jira/browse/HIVE-3073
> Project: Hive
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 0.10.0
> Reporter: Gang Tim Liu
> Assignee: Gang Tim Liu
> Attachments: HIVE-3073.patch.12, HIVE-3073.patch.13, HIVE-3073.patch.15, HIVE-3073.patch.18, HIVE-3073.patch.19, HIVE-3073.patch.21
>
>
> 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 DML change for the feature:
> 1. single skewed column
> 2. manual load data
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