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From "Uma Maheswara Rao G (JIRA)" <>
Subject [jira] [Commented] (HIVE-352) Make Hive support column based storage
Date Mon, 13 Aug 2012 05:46:38 GMT


Uma Maheswara Rao G commented on HIVE-352:

trying to specify or infer best compression technique per column much harder and something
that can be done later
Here we mentioned that, this improvement will be implemented later.
Could you please point me the right JIRA, where we started implementing this point or discuss?
> Make Hive support column based storage
> --------------------------------------
>                 Key: HIVE-352
>                 URL:
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>             Fix For: 0.4.0
>         Attachments: 4-22 performace2.txt, 4-22 performance.txt, 4-22 progress.txt, hive-352-2009-4-15.patch,
hive-352-2009-4-16.patch, hive-352-2009-4-17.patch, hive-352-2009-4-19.patch, hive-352-2009-4-22-2.patch,
hive-352-2009-4-22.patch, hive-352-2009-4-23.patch, hive-352-2009-4-27.patch, hive-352-2009-4-30-2.patch,
hive-352-2009-4-30-3.patch, hive-352-2009-4-30-4.patch, hive-352-2009-5-1-3.patch, hive-352-2009-5-1.patch,
HIve-352-draft-2009-03-28.patch, Hive-352-draft-2009-03-30.patch
> column based storage has been proven a better storage layout for OLAP. 
> Hive does a great job on raw row oriented storage. In this issue, we will enhance hive
to support column based storage. 
> Acctually we have done some work on column based storage on top of hdfs, i think it will
need some review and refactoring to port it to Hive.
> Any thoughts?

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