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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (HIVE-270) Add a lazy-deserialized SerDe for space and cpu efficient serialization of rows with primitive types
Date Wed, 04 Feb 2009 06:29:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670257#action_12670257
] 

zshao edited comment on HIVE-270 at 2/3/09 10:29 PM:
----------------------------------------------------------

This SerDe should support the quoting (ENCLOSED BY) and escaping (ESCAPED BY) as MySQL does
for "LOAD DATA" and "SELECT INTO OUTFILE".

http://dev.mysql.com/doc/refman/5.0/en/load-data.html

Note that neither the quoting nor the escaping in the MySQL way supports String.split().


      was (Author: zshao):
    This SerDe should support the quoting (ENCLOSED BY) and escaping (ESCAPED BY) as MySQL
does for "LOAD DATA" and "SELECT INTO OUTFILE".

http://dev.mysql.com/doc/refman/5.0/en/load-data.html

  
> Add a lazy-deserialized SerDe for space and cpu efficient serialization of rows with
primitive types
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-270
>                 URL: https://issues.apache.org/jira/browse/HIVE-270
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Serializers/Deserializers
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>
> We want to add a lazy-deserialized SerDe for space and cpu efficient serialization of
rows with primitive types.
> This SerDe will share the same format as MetadataTypedColumnsetSerDe/TCTLSeparatedProtocol
to be backward compatible.
> This SerDe will be used to replace the default table SerDe.
> For simplicity, we don't plan to support nested structure with this SerDe.

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