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Min Zhou commented on HIVE-322: ------------------------------- Hey Joydeep, I'll try to implement it, however, we will make our UDFs temporarily on Thrift Server mode, not CLI. That a great feature you mentioned! > 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 > Attachments: registerjars-v3.patch, registerjars1.patch, > registerjars2.patch > > > 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 make a patch soon. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.