[HIVE-5124] group by without map aggregation lead to mapreduce exception

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.11.0
• Component/s: Query Processor
• Assignee: Unassigned Assign to me
• Reporter: cyril liao
• Created: 20/Aug/13 06:31
• Updated: 28/Jan/14 05:20

Description

On my environment, the same query but diffent by seting hive.map.aggr with true or flase,produce different result.
With hive.map.aggr=false,tasktracker report the following exception:
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.ReduceTask.runOldReducer(ReduceTask.java:485)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:420)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
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:1083)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
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.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
... 9 more
Caused by: java.lang.RuntimeException: Reduce operator initialization failed
at org.apache.hadoop.hive.ql.exec.ExecReducer.configure(ExecReducer.java:160)
... 14 more
Caused by: java.lang.RuntimeException: cannot find field value from [0:_col0, 1:_col1, 2:_col2, 3:_col3]
at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardStructFieldRef(ObjectInspectorUtils.java:366)
at org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector.getStructFieldRef(StandardStructObjectInspector.java:143)
at org.apache.hadoop.hive.ql.exec.ExprNodeColumnEvaluator.initialize(ExprNodeColumnEvaluator.java:82)
at org.apache.hadoop.hive.ql.exec.GroupByOperator.initializeOp(GroupByOperator.java:299)
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:451)
at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:407)
at org.apache.hadoop.hive.ql.exec.SelectOperator.initializeOp(SelectOperator.java:62)
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:451)
at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:407)
at org.apache.hadoop.hive.ql.exec.GroupByOperator.initializeOp(GroupByOperator.java:438)
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
at org.apache.hadoop.hive.ql.exec.ExecReducer.configure(ExecReducer.java:153)