RE: UDAF:FAILED: Execution Error

[Matouk Iftissen]

Hello,

·         With UDF you do this :

package com.example.hive.udf;

import org.apache.hadoop.hive.ql.exec.UDF;



public final class Maclass extends UDF{.....}



·         then you generate your  jar  monjar.jar (for example) with java class 
(maclass)

·         you add you jar to hive:

hive> add jar Maclass.jar


·         you create then an UDF like:

hive> create temporary function mafonction as 'com.example.hive.udf.monjar';


·         and then use mafonction in hive query.

Hope that this help you

Best regard
Matouk.
De : Tamil A [mailto:4tamil...@gmail.com]
Envoyé : jeudi 6 septembre 2012 14:26
À : user@hive.apache.org
Objet : UDAF:FAILED: Execution Error

Hi Experts,

I have written an UDAF function and followed the below steps.

Step 1:
Export jar file

Step 2:
hive>ADD JAR /userdata/tamil/SumOfColumnTest/AvgOfColumn.jar;
(also tried with hive --auxpath /userdata/tamil/SumOfColumnTest/AvgOfColumn.jar;
                      export 
HADOOP_CLASSPATH=$HADOOP_CLASSPATH:/userdata/tamil/SumOfColumnTest/AvgOfColumn.jar)
hive>list jar;
/userdata/tamil/SumOfColumnTest/AvgOfColumn.jar

Step 3;
hive>CREATE TEMPORARY FUNCTION avge AS 'com.hadoopbook.hive.UDAFExampleAvg';

but after this got the below error,
FAILED: Execution Error, return code 1 from 
org.apache.hadoop.hive.ql.exec.FunctionTask

is the above procedure i followed is same for UDF and UDAF or some other 
changes are to be made for UDAF.


Please help me out,

Thanks & Regards,
Tamil