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From Venugopal Krishnan <Venugopal_Krish...@mindtree.com>
Subject Accessing UDF function from hive jdbc
Date Fri, 01 Feb 2013 03:53:56 GMT
Hi,

I am having issues in accessing the UDF function from the hive queries using jdbc. Is it possible
to access UDF function from the jdbc? I will explain the steps below and also the error which
I am getting.

I had copied the jar which has the UDF class file in the directory /user/temp/folder on the
hadoop cluster

I am registering that jar using the below entry from the java file using spring Aspects.

DistributedCache.addFileToClassPath(new Path(hiveLibsPath + "/test.jar"), conf);

I am using the below syntax to create the function

CREATE TEMPORARY FUNCTION  test_123 'com.test.calculate' .  calculate the class file . I get
the below error

Query returned non-zero code: 9, cause: FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask

When I checked the jobdetails I get the exception as below.

java.lang.RuntimeException: Error in configuring object
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:387)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
        at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
        at org.apache.hadoop.mapred.Child.main(Child.java:264)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav
java.lang.RuntimeException: Error in configuring object
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:387)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
        at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
        at org.apache.hadoop.mapred.Child.main(Child.java:264)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav
java.lang.RuntimeException: Error in configuring object


Did I miss anything ??

The same is working well in Hive CLI.


Regards,
gopal


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