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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-352) Make Hive support column based storage
Date Mon, 30 Mar 2009 06:51:50 GMT

     [ https://issues.apache.org/jira/browse/HIVE-352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

He Yongqiang updated HIVE-352:
------------------------------

    Attachment: Hive-352-draft-2009-03-30.patch

An update version according Zheng's suggestions.
1) remove all usage of BytesWritable, and replace them with BytesRefWritable
2) change modifier of rowTypeInfo in LazySimpleSerDe to default
3) change modifer of uncheckedGetField in LazyStruct from private to protected, which can
allow subclasses to override its behaviour
4) several fixes of initial RCFile
5) a runnable TestRCFile (the TestRCFile in the previous attatched file can not even pass
the compile, my mistake.)

Thanks,Zheng.

> 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
>         Attachments: 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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