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Message-ID: <1140897391.1236146276190.JavaMail.jira@brutus>
Date: Tue, 3 Mar 2009 21:57:56 -0800 (PST)
From: "Min Zhou (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Updated: (HIVE-322) cannot create temporary udf dynamically,
 with a ClassNotFoundException
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     [ https://issues.apache.org/jira/browse/HIVE-322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Min Zhou updated HIVE-322:
--------------------------

    Description: 
I found the ClassLoader cannot load my UDF when doing FunctionTask, because the ClassLoader hasnot append its classpaths on-the-fly yet.
The ExecDriver' s addToClassPath(String[] newPaths) method is the only entry for ClassLoader dynamically append its classhpaths (besides hadoop's GenericOptionsParser).
But that function wasnot called before FunctionTask getting my UDF class by class name. I think this is the reason why I came across that failure.

scenario description:

I set a peroperty in hive-site.xml to configure the classpath of my udf. 
<property>
  <name>hive.aux.jars.path</name>
  <value>/home/hadoop/hdpsoft/hive-auxs/zhoumin.jar</value>
</property>

but failed to register it with a ClassNotFoundException when creating udf through the sql command.
CREATE TEMPORARY FUNCTION strlen AS 'hadoop.hive.udf.UdfStringLength'

I'll patch that soon.



  was:
CREATE TEMPORARY FUNCTION strlen AS 'com.taobao.hadoop.hive.udf.UdfStringLength'
I found the ClassLoader cannot load my UDF when doing FunctionTask, because the ClassLoader hasnot append its classpaths on-the-fly yet.
The ExecDriver' s addToClassPath(String[] newPaths) method is the only entry for ClassLoader dynamically append its classhpaths (besides hadoop's GenericOptionsParser).
But that function wasnot called before FunctionTask getting my UDF class by class name. I think this is the reason why I came across that failure.

scenario description:

I set a peroperty in hive-site.xml to configure the classpath of my udf. 
<property>
  <name>hive.aux.jars.path</name>
  <value>/home/hadoop/hdpsoft/hive-auxs/zhoumin.jar</value>
</property>

but failed to register it with a ClassNotFoundException when creating udf through the sql command.

I'll patch that soon.




> cannot create temporary udf dynamically, with a ClassNotFoundException 
> -----------------------------------------------------------------------
>
>                 Key: HIVE-322
>                 URL: https://issues.apache.org/jira/browse/HIVE-322
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.3.0
>            Reporter: Min Zhou
>            Priority: Blocker
>
> I found the ClassLoader cannot load my UDF when doing FunctionTask, because the ClassLoader hasnot append its classpaths on-the-fly yet.
> The ExecDriver' s addToClassPath(String[] newPaths) method is the only entry for ClassLoader dynamically append its classhpaths (besides hadoop's GenericOptionsParser).
> But that function wasnot called before FunctionTask getting my UDF class by class name. I think this is the reason why I came across that failure.
> scenario description:
> I set a peroperty in hive-site.xml to configure the classpath of my udf. 
> <property>
>   <name>hive.aux.jars.path</name>
>   <value>/home/hadoop/hdpsoft/hive-auxs/zhoumin.jar</value>
> </property>
> but failed to register it with a ClassNotFoundException when creating udf through the sql command.
> CREATE TEMPORARY FUNCTION strlen AS 'hadoop.hive.udf.UdfStringLength'
> I'll patch that soon.

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