[DRILL-4233] count distinct on a non-existent dir1 column gives NPE

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Functions - Drill
• Assignee: Unassigned
• Reporter: Rahul Kumar Challapalli
• Created: 29/Dec/15 22:45
• Updated: 13/Jan/17 16:58

Description

git.commit.id.abbrev=6dea429

The below query gives an NPE (dir1 does not exist)

select count(distinct dir1) from `parquet/nested_dir/data/drill4192_1/level1`;
Error: SYSTEM ERROR: NullPointerException

Fragment 0:0

A similar query on a missing column returns 0

select count(distinct missing_column) from `parquet/nested_dir/data/drill4192_1/level1/*`;
+---------+
| EXPR$0  |
+---------+
| 0       |
+---------+

Below is the stacktrace for the NPE

Fragment 0:0

[Error Id: f686845f-9588-420d-ae3f-3217fd78c016 on qa-node190.qa.lab:31010]
org.apache.drill.common.exceptions.UserException: SYSTEM ERROR: NullPointerException

Fragment 0:0

[Error Id: f686845f-9588-420d-ae3f-3217fd78c016 on qa-node190.qa.lab:31010]
        at org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:534) ~[drill-common-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:321) [drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:184) [drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:290) [drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38) [drill-common-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_71]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_71]
        at java.lang.Thread.run(Thread.java:745) [na:1.7.0_71]
Caused by: java.lang.NullPointerException: null
        at io.netty.buffer.DrillBuf.getPossibleMemoryConsumed(DrillBuf.java:806) ~[drill-memory-base-1.5.0-SNAPSHOT.jar:4.0.27.Final]
        at org.apache.drill.exec.physical.impl.xsort.ExternalSortBatch.getBufferSize(ExternalSortBatch.java:603) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.xsort.ExternalSortBatch.innerNext(ExternalSortBatch.java:359) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:162) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:215) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.aggregate.StreamingAggBatch.innerNext(StreamingAggBatch.java:137) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:162) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:215) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.aggregate.StreamingAggBatch.innerNext(StreamingAggBatch.java:137) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:162) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:215) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:132) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:162) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:215) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:104) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:81) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:94) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:256) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:250) ~[drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0_71]
        at javax.security.auth.Subject.doAs(Subject.java:415) ~[na:1.7.0_71]
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1595) ~[hadoop-common-2.7.0-mapr-1506.jar:na]
        at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:250) [drill-java-exec-1.5.0-SNAPSHOT.jar:1.5.0-SNAPSHOT]
        ... 4 common frames omitted