[ https://issues.apache.org/jira/browse/DRILL-726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13997043#comment-13997043
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Chun Chang commented on DRILL-726:
----------------------------------
trace:
java.lang.ClassCastException: org.apache.drill.exec.vector.NullableIntVector cannot be cast
to org.apache.drill.exec.vector.NullableVarBinaryVector
org.apache.drill.exec.test.generated.MergingReceiverGeneratorBaseGen136.doCopy(MergingReceiverTemplate.java:345)
~[na:na]
org.apache.drill.exec.physical.impl.mergereceiver.MergingRecordBatch.copyRecordToOutgoingBatch(MergingRecordBatch.java:633)
~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
org.apache.drill.exec.physical.impl.mergereceiver.MergingRecordBatch.next(MergingRecordBatch.java:226)
~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:111)
~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.next(ScreenCreator.java:80)
~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:91) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_45]
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_45]
java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
> order by fails when a column has null value
> -------------------------------------------
>
> Key: DRILL-726
> URL: https://issues.apache.org/jira/browse/DRILL-726
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Chun Chang
>
> postgres:
> foodmart=# select c_row, c_groupby from data order by c_row;
> c_row | c_groupby
> -------+-----------
> 1 | a
> 2 | ab
> 3 | abc
> 4 |
> 5 |
> 6 | abc
> 7 | ab
> 8 | a
> 9 | a
> 10 | ab
> 11 | abc
> 12 |
> 13 |
> 14 | abc
> 15 | ab
> 16 | a
> 17 | a
> 18 | ab
> 19 | abc
> 20 |
> 21 |
> 22 | abc
> 23 | ab
> (23 rows)
> drill:
> 0: jdbc:drill:schema=dfs> select c_row, c_groupby from data order by c_row;
> Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id:
"8dcb47ec-9c27-4a04-8b48-61e2aad2ad19"
> endpoint {
> address: "qa-node120.qa.lab"
> user_port: 31010
> control_port: 31011
> data_port: 31012
> }
> error_type: 0
> message: "Failure while running fragment. < ClassCastException:[ org.apache.drill.exec.vector.NullableIntVector
cannot be cast to org.apache.drill.exec.vector.NullableVarBinaryVector ]"
> ]
> Error: exception while executing query (state=,code=0)
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