You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@drill.apache.org by "Hanifi Gunes (JIRA)" <ji...@apache.org> on 2015/02/17 20:02:12 UTC
[jira] [Created] (DRILL-2256) Flatten on an empty list fails.
Hanifi Gunes created DRILL-2256:
-----------------------------------
Summary: Flatten on an empty list fails.
Key: DRILL-2256
URL: https://issues.apache.org/jira/browse/DRILL-2256
Project: Apache Drill
Issue Type: Bug
Reporter: Hanifi Gunes
Running
{code}
select flatten(empty) from data.json
{code}
on
{code:title=data.json}
{"empty": [ [] ] }
{code}
fails with
{code}
java.lang.NullPointerException
at org.apache.drill.exec.vector.complex.RepeatedListVector$RepeatedListTransferPair.<init>(RepeatedListVector.java:273) ~[classes/:na]
at org.apache.drill.exec.vector.complex.RepeatedListVector$RepeatedListTransferPair.<init>(RepeatedListVector.java:265) ~[classes/:na]
at org.apache.drill.exec.vector.complex.RepeatedListVector.makeTransferPair(RepeatedListVector.java:322) ~[classes/:na]
at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.setupNewSchema(ProjectRecordBatch.java:406) ~[classes/:na]
at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:78) ~[classes/:na]
at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:134) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142) ~[classes/:na]
at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:99) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:89) ~[classes/:na]
at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51) ~[classes/:na]
at org.apache.drill.exec.physical.impl.flatten.FlattenRecordBatch.innerNext(FlattenRecordBatch.java:122) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142) ~[classes/:na]
at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:99) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:89) ~[classes/:na]
at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51) ~[classes/:na]
at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:134) ~[classes/:na]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142) ~[classes/:na]
at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118) ~[classes/:na]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:67) ~[classes/:na]
at org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:97) ~[classes/:na]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:57) ~[classes/:na]
at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:116) ~[classes/:na]
at org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:303) [classes/:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_65]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_65]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]
{code}
I believe, flatten should have output as many nulls as the number of existing records/rows.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)