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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-352) Make Hive support column based storage
Date Thu, 26 Mar 2009 14:06:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689492#action_12689492
] 

He Yongqiang commented on HIVE-352:
-----------------------------------

{quote}
impose our own structure on the sequencefile record which can allow skipping unnecessary data
impose ur own layout inside this so that the ColumnarSerDe only needs to seek to and decompress
the relevant column
{quote}

Can you give a detailed intro about the "ur own layout"? Thanks!!

> Make Hive support column based storage
> --------------------------------------
>
>                 Key: HIVE-352
>                 URL: https://issues.apache.org/jira/browse/HIVE-352
>             Project: Hadoop Hive
>          Issue Type: New Feature
>            Reporter: He Yongqiang
>
> 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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