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Posted to dev@drill.apache.org by "Chun Chang (JIRA)" <ji...@apache.org> on 2015/03/04 22:59:38 UTC
[jira] [Created] (DRILL-2385) count on complex objects failed with
missing function implementation
Chun Chang created DRILL-2385:
---------------------------------
Summary: count on complex objects failed with missing function implementation
Key: DRILL-2385
URL: https://issues.apache.org/jira/browse/DRILL-2385
Project: Apache Drill
Issue Type: Bug
Components: Execution - Data Types
Affects Versions: 0.8.0
Reporter: Chun Chang
Assignee: Daniel Barclay (Drill)
#Wed Mar 04 01:23:42 EST 2015
git.commit.id.abbrev=71b6bfe
Have a complex type looks like the following:
{code}
0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.sia from `complex.json` t limit 1;
+------------+
| sia |
+------------+
| [1,11,101,1001] |
+------------+
{code}
A count on the complex type will fail with missing function implementation:
{code}
0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.gbyi, count(t.sia) countsia from `complex.json` t group by t.gbyi;
Query failed: RemoteRpcException: Failure while running fragment., Schema is currently null. You must call buildSchema(SelectionVectorMode) before this container can return a schema. [ 12856530-3133-45be-bdf4-ef8cc784f7b3 on qa-node119.qa.lab:31010 ]
[ 12856530-3133-45be-bdf4-ef8cc784f7b3 on qa-node119.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}
drillbit.log
{code}
2015-03-04 13:44:51,383 [2b08832b-9247-e90c-785d-751f02fc1548:frag:2:0] ERROR o.a.drill.exec.ops.FragmentContext - Fragment Context received failure.
org.apache.drill.exec.exception.SchemaChangeException: Failure while materializing expression.
Error in expression at index 0. Error: Missing function implementation: [count(BIGINT-REPEATED)]. Full expression: null.
at org.apache.drill.exec.physical.impl.aggregate.HashAggBatch.createAggregatorInternal(HashAggBatch.java:210) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.aggregate.HashAggBatch.createAggregator(HashAggBatch.java:158) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.aggregate.HashAggBatch.buildSchema(HashAggBatch.java:101) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:130) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:67) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.partitionsender.PartitionSenderRootExec.innerNext(PartitionSenderRootExec.java:114) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:57) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:121) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:303) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_45]
at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
2015-03-04 13:44:51,383 [2b08832b-9247-e90c-785d-751f02fc1548:frag:2:0] WARN o.a.d.e.w.fragment.FragmentExecutor - Error while initializing or executing fragment
java.lang.NullPointerException: Schema is currently null. You must call buildSchema(SelectionVectorMode) before this container can return a schema.
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:208) ~[guava-14.0.1.jar:na]
at org.apache.drill.exec.record.VectorContainer.getSchema(VectorContainer.java:261) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.record.AbstractRecordBatch.getSchema(AbstractRecordBatch.java:155) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.getSchema(IteratorValidatorBatchIterator.java:75) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.partitionsender.PartitionSenderRootExec.sendEmptyBatch(PartitionSenderRootExec.java:276) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.partitionsender.PartitionSenderRootExec.innerNext(PartitionSenderRootExec.java:131) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:57) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:121) ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:303) [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_45]
at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
{code}
physical plan:
{code}
0: jdbc:drill:schema=dfs.drillTestDirComplexJ> explain plan for select t.gbyi, count(t.sia) countsia from `complex.json` t group by t.gbyi;
+------------+------------+
| text | json |
+------------+------------+
| 00-00 Screen
00-01 Project(gbyi=[$0], countsia=[$1])
00-02 UnionExchange
01-01 HashAgg(group=[{0}], countsia=[$SUM0($1)])
01-02 HashToRandomExchange(dist0=[[$0]])
02-01 HashAgg(group=[{0}], countsia=[COUNT($1)])
02-02 Project(gbyi=[$1], sia=[$0])
02-03 Scan(groupscan=[EasyGroupScan [selectionRoot=/drill/testdata/complex_type/json/complex.json, numFiles=1, columns=[`gbyi`, `sia`], files=[maprfs:/drill/testdata/complex_type/json/complex.json]]])
{code}
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