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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-5306) Use new GenericUDF instead of basic UDF for UDFAbs class
Date Fri, 20 Sep 2013 10:44:53 GMT

    [ https://issues.apache.org/jira/browse/HIVE-5306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13772929#comment-13772929
] 

Hive QA commented on HIVE-5306:
-------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12604202/HIVE-5306.6.patch

{color:red}ERROR:{color} -1 due to 1 failed/errored test(s), 3134 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_reduce_deduplicate
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/839/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/839/console

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests failed with: TestsFailedException: 1 tests failed
{noformat}

This message is automatically generated.
                
> Use new GenericUDF instead of basic UDF for UDFAbs class
> --------------------------------------------------------
>
>                 Key: HIVE-5306
>                 URL: https://issues.apache.org/jira/browse/HIVE-5306
>             Project: Hive
>          Issue Type: Improvement
>          Components: UDF
>            Reporter: Mohammad Kamrul Islam
>            Assignee: Mohammad Kamrul Islam
>         Attachments: HIVE-5306.1.patch, HIVE-5306.2.patch, HIVE-5306.3.patch, HIVE-5306.4.patch,
HIVE-5306.5.patch, HIVE-5306.6.patch
>
>
> GenericUDF class is the latest  and recommended base class for any UDFs.
> This JIRA is to change the current UDFAbs class extended from GenericUDF.
> The general benefit of GenericUDF is described in comments as 
> "* The GenericUDF are superior to normal UDFs in the following ways: 1. It can
>  * accept arguments of complex types, and return complex types. 2. It can accept
>  * variable length of arguments. 3. It can accept an infinite number of function
>  * signature - for example, it's easy to write a GenericUDF that accepts
>  * array<int>, array<array<int>> and so on (arbitrary levels of nesting).
4. It
>  * can do short-circuit evaluations using DeferedObject."  

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