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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HIVE-336) TBinaryProtocol blow up the data size between map-reduce boundary
Date Tue, 24 Mar 2009 23:49:50 GMT

     [ https://issues.apache.org/jira/browse/HIVE-336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao resolved HIVE-336.
-----------------------------

       Resolution: Fixed
    Fix Version/s: 0.3.0
     Hadoop Flags: [Reviewed]

As part of HIVE-337, we changed the SerDe to LazySimpleSerDe, for the value part in the key-value
pair between map and reduce.


> TBinaryProtocol blow up the data size between map-reduce boundary
> -----------------------------------------------------------------
>
>                 Key: HIVE-336
>                 URL: https://issues.apache.org/jira/browse/HIVE-336
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>    Affects Versions: 0.2.0, 0.3.0
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>            Priority: Blocker
>             Fix For: 0.3.0
>
>
> TBinaryProtocol is very space-inefficient. We've seen the data blown up several times
between the map-reduce boundary because of it.
> We should change it to simple delimited format (backed by LazySimpleSerDe).

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