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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-270) Add a lazy-deserialized SerDe for space and cpu efficient serialization of rows with primitive types
Date Thu, 12 Feb 2009 03:55:59 GMT

     [ https://issues.apache.org/jira/browse/HIVE-270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao updated HIVE-270:
----------------------------

    Attachment: HIVE-270.4.patch

After looking at the code again, I decided to postpone the change of serialization until we
move from String to Text.

With that change, we will be able to get rid of all UTF-8 encoding in the serialization.

This patch incorporates all other comments from Joydeep.


> 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
>         Attachments: HIVE-270.1.patch, HIVE-270.3.patch, HIVE-270.4.patch
>
>
> 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, and the SerDe used to communicate
with user scripts.
> For simplicity, we don't plan to support nested structure with this SerDe.

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