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https://issues.apache.org/jira/browse/DRILL-2385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15333952#comment-15333952
]
ASF GitHub Bot commented on DRILL-2385:
---------------------------------------
Github user vdiravka commented on the issue:
https://github.com/apache/drill/pull/501
Squashing and rebasing to the master were done.
> 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: Functions - Drill
> Affects Versions: 0.8.0
> Reporter: Chun Chang
> Assignee: Vitalii Diravka
> Priority: Minor
> Fix For: 1.7.0
>
>
> #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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