[jira] Resolved: (HIVE-521) Move size, if, isnull, isnotnull to GenericUDF

["Zheng Shao (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zheng Shao resolved HIVE-521.
-----------------------------

      Resolution: Fixed
    Release Note: HIVE-521. Move size, if, isnull, isnotnull to GenericUDF. (Min Zhou via zshao)
    Hadoop Flags: [Reviewed]

Committed. Thanks Min!

> 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
>            Assignee: Min Zhou
>             Fix For: 0.4.0
>
>         Attachments: HIVE-521-all-v1.patch, HIVE-521-all-v2.patch, HIVE-521-all-v3.patch, HIVE-521-all-v4.patch, HIVE-521-all-v5.patch, HIVE-521-all-v6.patch, HIVE-521-all-v7.patch, HIVE-521-IF-2.patch, HIVE-521-IF-3.patch, HIVE-521-IF-4.patch, HIVE-521-IF-5.patch, HIVE-521-IF.patch
>
>
> 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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