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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-352) Make Hive support column based storage
Date Wed, 15 Apr 2009 04:42:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12699050#action_12699050
] 

Zheng Shao commented on HIVE-352:
---------------------------------

Please try a simple test for writing/reading using the new SerDe and file format:

{code}
CREATE table columnTable (key STRING, value STRING)
ROW FORMAT SERDE
  'org.apache.hadoop.hive.serde.columnar.ColumnarSerDe'
STORED AS
  INPUTFORMAT 'org.apache.hadoop.hive.serde.columnar.RCFIleInputFormat'
  OUTPUTFORMAT 'org.apache.hadoop.hive.serde.columnar.RCFIleOutputFormat';

INSERT OVERWRITE TABLE columnTable
SELECT src.*
FROM src;

SELECT *
FROM columnTable;
{code}


> 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-352-2009-4-15.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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