Fix UDAFPercentile ndexOutOfBoundsException
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Key: HIVE-1291
URL: https://issues.apache.org/jira/browse/HIVE-1291
Project: Hadoop Hive
Issue Type: Bug
Affects Versions: 0.6.0
Reporter: Zheng Shao
Assignee: Zheng Shao
The counts array can be empty. We should directly return null in that case.
{code}
org.apache.hadoop.hive.ql.metadata.HiveException: Unable to execute method
public org.apache.hadoop.hive.serde2.io.DoubleWritable
org.apache.hadoop.hive.ql.udf.UDAFPercentile$PercentileLongEvaluator.terminate()
on object
org.apache.hadoop.hive.ql.udf.udafpercentile$percentilelongevalua...@530d0eae
of class org.apache.hadoop.hive.ql.udf.UDAFPercentile$PercentileLongEvaluator
with arguments {} of size 0
at
org.apache.hadoop.hive.ql.exec.FunctionRegistry.invoke(FunctionRegistry.java:725)
at
org.apache.hadoop.hive.ql.udf.generic.GenericUDAFBridge$GenericUDAFBridgeEvaluator.terminate(GenericUDAFBridge.java:181)
at
org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.evaluate(GenericUDAFEvaluator.java:157)
at
org.apache.hadoop.hive.ql.exec.GroupByOperator.forward(GroupByOperator.java:838)
at
org.apache.hadoop.hive.ql.exec.GroupByOperator.closeOp(GroupByOperator.java:885)
at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:539)
at
org.apache.hadoop.hive.ql.exec.ExecReducer.close(ExecReducer.java:300)
at
org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:474)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:412)
at org.apache.hadoop.mapred.Child.main(Child.java:159)
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.hive.ql.exec.FunctionRegistry.invoke(FunctionRegistry.java:701)
... 9 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at
org.apache.hadoop.hive.ql.udf.UDAFPercentile.getPercentile(UDAFPercentile.java:97)
at
org.apache.hadoop.hive.ql.udf.UDAFPercentile.access$300(UDAFPercentile.java:44)
at
org.apache.hadoop.hive.ql.udf.UDAFPercentile$PercentileLongEvaluator.terminate(UDAFPercentile.java:196)
... 14 more
{code}
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