[
https://issues.apache.org/jira/browse/HIVE-8241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14146554#comment-14146554
]
Mostafa Mokhtar commented on HIVE-8241:
---------------------------------------
Looks like the wrong ObjectInspector is used when vectorization is on.
> With vectorization enabled count(distinct)) fails with ClassCastException
> -------------------------------------------------------------------------
>
> Key: HIVE-8241
> URL: https://issues.apache.org/jira/browse/HIVE-8241
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.14.0
> Environment: cn105
> Reporter: Mostafa Mokhtar
> Assignee: Matt McCline
> Fix For: 0.14.0
>
>
> Repro
> {code}
> set hive.vectorized.execution.enabled=true;
> select count(distinct(cint)) from alltypesorc;
> {code}
> Exception
> {code}
> Caused by: java.lang.ClassCastException:
> org.apache.hadoop.hive.serde2.objectinspector.StandardUnionObjectInspector$StandardUnion
> cannot be cast to org.apache.hadoop.io.IntWritable
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector.get(WritableIntObjectInspector.java:36)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.serialize(BinarySortableSerDe.java:654)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.serialize(BinarySortableSerDe.java:602)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.toHiveKey(ReduceSinkOperator.java:468)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorReduceSinkOperator.processOp(VectorReduceSinkOperator.java:283)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:800)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator.flushOutput(VectorGroupByOperator.java:918)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator.writeSingleRow(VectorGroupByOperator.java:891)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator.access$400(VectorGroupByOperator.java:63)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator$ProcessingModeHashAggregate.flush(VectorGroupByOperator.java:463)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator$ProcessingModeHashAggregate.checkHashModeEfficiency(VectorGroupByOperator.java:536)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator$ProcessingModeHashAggregate.processBatch(VectorGroupByOperator.java:363)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator.processOp(VectorGroupByOperator.java:851)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:800)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.processOp(VectorSelectOperator.java:139)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:800)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:95)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:800)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:43)
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
