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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-5203) FunctionRegistry.getMethodInternal() should prefer method arguments with closer affinity to the original argument types
Date Sat, 07 Sep 2013 02:43:58 GMT

    [ https://issues.apache.org/jira/browse/HIVE-5203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13760883#comment-13760883
] 

Hudson commented on HIVE-5203:
------------------------------

FAILURE: Integrated in Hive-trunk-hadoop2-ptest #85 (See [https://builds.apache.org/job/Hive-trunk-hadoop2-ptest/85/])
HIVE-5203 : FunctionRegistry.getMethodInternal() should prefer method arguments with closer
affinity to the original argument types (Jason Dere via Ashutosh Chauhan) (hashutosh: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1520413)
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/exec/TestFunctionRegistry.java
* /hive/trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/PrimitiveObjectInspectorUtils.java
* /hive/trunk/serde/src/test/org/apache/hadoop/hive/serde2/objectinspector/primitive
* /hive/trunk/serde/src/test/org/apache/hadoop/hive/serde2/objectinspector/primitive/TestPrimitiveObjectInspectorUtils.java

                
> FunctionRegistry.getMethodInternal() should prefer method arguments with closer affinity
to the original argument types
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-5203
>                 URL: https://issues.apache.org/jira/browse/HIVE-5203
>             Project: Hive
>          Issue Type: Bug
>          Components: Types, UDF
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>             Fix For: 0.12.0
>
>         Attachments: HIVE-5203.1.patch, HIVE-5203.2.patch
>
>
> When the function registry is trying to determine the best version of UDF evaluate()
to use based on a set of arguments passed in, it should prefer methods where the argument
types are more related to the original types. For example if varchar is used with UDFFromUnixTime(),
varchar is convertible to both the double and string versions of evaluate() for that UDF.
 In this case we would prefer that the function registry select the string version over the
double version, since varchar and string are both string types.
> This doesn't really affect any of the existing types, but comes into play with the addition
of the varchar type (HIVE-4844).

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