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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-640) Add LazyBinarySerDe to Hive
Date Thu, 30 Jul 2009 22:34:15 GMT

    [ https://issues.apache.org/jira/browse/HIVE-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737334#action_12737334
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Zheng Shao commented on HIVE-640:
---------------------------------

Haven't finished the review yet. Here are some of the comments:

@HIVE-640.2.patch:

TestLazyBinarySerDe:hexString: Can you make TestBinarySortableSerDe:hexString static and remove
TestLazyBinarySerDe:hexString? In the future, we can move that function to a utility class,
but for now, let's at least use the same function to avoid code replication.
There are several other functions that we can make the same change.

TestLazyBinarySerDe:testShorterSchemaDeserialization etc: Can you extract some common code
and put into a function?


> Add LazyBinarySerDe to Hive
> ---------------------------
>
>                 Key: HIVE-640
>                 URL: https://issues.apache.org/jira/browse/HIVE-640
>             Project: Hadoop Hive
>          Issue Type: New Feature
>            Reporter: Zheng Shao
>            Assignee: Yuntao Jia
>         Attachments: HIVE-640.1.patch, HIVE-640.2.patch
>
>
> LazyBinarySerDe will serialize the data in binary format while supporting LazyDeserialization.
> This will be used as the SerDe for value between map and reduce, and also between different
map-reduce jobs.
> This will help improve the performance of Hive a lot.

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