[HIVE-9073] NPE when using custom windowing UDAFs

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.14.0, 1.0.0
• Fix Version/s: 1.2.0
• Component/s: UDF
• Assignee: Jason Dere
• Reporter: Jason Dere
• Created: 10/Dec/14 22:58
• Updated: 10/Aug/15 18:28
• Resolved: 07/Apr/15 23:14

Description

From the hive-user email group:

While executing a simple select query using a custom windowing UDAF I created I am constantly running into this error.
 
Error: java.lang.RuntimeException: Error in configuring object
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:109)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:75)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:133)
        at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:409)
        at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:392)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1594)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:106)
        ... 9 more
Caused by: java.lang.RuntimeException: Reduce operator initialization failed
        at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.configure(ExecReducer.java:173)
        ... 14 more
Caused by: java.lang.NullPointerException
        at org.apache.hadoop.hive.ql.exec.FunctionRegistry.getFunctionInfo(FunctionRegistry.java:647)
        at org.apache.hadoop.hive.ql.exec.FunctionRegistry.getWindowFunctionInfo(FunctionRegistry.java:1875)
        at org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.streamingPossible(WindowingTableFunction.java:150)
        at org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.setCanAcceptInputAsStream(WindowingTableFunction.java:221)
        at org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.initializeStreaming(WindowingTableFunction.java:266)
        at org.apache.hadoop.hive.ql.exec.PTFOperator$PTFInvocation.initializeStreaming(PTFOperator.java:292)
        at org.apache.hadoop.hive.ql.exec.PTFOperator.initializeOp(PTFOperator.java:86)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:376)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:460)
        at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:416)
        at org.apache.hadoop.hive.ql.exec.ExtractOperator.initializeOp(ExtractOperator.java:40)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:376)
        at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.configure(ExecReducer.java:166)
        ... 14 more
 
Just wanted to check if any of you have faced this earlier. Also when I try to run the Custom UDAF on another server it works fine. The only difference I can see it that the hive version I am using on my local machine is 0.13.1 where it is working and on the other machine it is 0.13.0 where I see the above mentioned error. I am not sure if this was a bug which was fixed in the later release but I just wanted to confirm the same.

Issue Links

• links to: https://reviews.apache.org/r/28921/