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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-1037) SerDe & ObjectInspector for RowContainer mismatch with the input data
Date Fri, 08 Jan 2010 21:29:54 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12798187#action_12798187
] 

Namit Jain commented on HIVE-1037:
----------------------------------

+1

will commit if the tests pass

> SerDe & ObjectInspector for RowContainer mismatch with the input data
> ---------------------------------------------------------------------
>
>                 Key: HIVE-1037
>                 URL: https://issues.apache.org/jira/browse/HIVE-1037
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>            Priority: Blocker
>             Fix For: 0.5.0
>
>         Attachments: HIVE-1037.patch
>
>
> In CommonJoinOperator, RowContainer is created for each input table with the SerDe and
ObjectInspector to serialize/deserialize that row to persistent storage. The serde/OI could
be null in the case of the value columns are pruned by column pruner. An example query is
> select count(1) from A join B on A.key=B.key;
> Another case of mismatch is that the tableDesc was initialized at compile time before
the column pruner take place. This could cause inconsistency in the SerDe/OI with the input
data. This should be moved to execution time when the join operator is initialized. 

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