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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-1037) SerDe & ObjectInspector for RowContainer mismatch with the input data
Date Fri, 08 Jan 2010 05:51:00 GMT
SerDe & ObjectInspector for RowContainer mismatch with the input data
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                 Key: HIVE-1037
                 URL: https://issues.apache.org/jira/browse/HIVE-1037
             Project: Hadoop Hive
          Issue Type: Bug
            Reporter: Ning Zhang
            Assignee: Ning Zhang


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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