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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-521) Move size, if, isnull, isnotnull to GenericUDF
Date Wed, 27 May 2009 21:15:46 GMT
Move size, if, isnull, isnotnull to GenericUDF

                 Key: HIVE-521
                 URL: https://issues.apache.org/jira/browse/HIVE-521
             Project: Hadoop Hive
          Issue Type: Improvement
    Affects Versions: 0.4.0
            Reporter: Zheng Shao
             Fix For: 0.4.0

See HIVE-511 for an example of the move.

size, if, isnull, isnotnull are all implemented with UDF but they are actually working on
variable types of objects. We should move them to GenericUDF for better type handling.

This also helps to clean up the hack in doing type matching/type conversion in UDF.

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