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https://issues.apache.org/jira/browse/DRILL-2366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14380335#comment-14380335
]
Mehant Baid commented on DRILL-2366:
------------------------------------
+1
> Query nested lists causing IllegalArgumentException
> ---------------------------------------------------
>
> Key: DRILL-2366
> URL: https://issues.apache.org/jira/browse/DRILL-2366
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types
> Affects Versions: 0.8.0
> Reporter: Chun Chang
> Assignee: Mehant Baid
> Priority: Blocker
> Fix For: 0.9.0
>
> Attachments: DRILL-2366.1.patch.txt
>
>
> #Wed Feb 25 17:07:31 EST 2015
> git.commit.id.abbrev=f7ef5ec
> I have nested array in a json file looks like this:
> {code}
> "aaa":[[["aa0 1"], ["ab0 1"]], [["ba0 1"], ["bb0 1"]],[["ca0 1", "ca1
> 1"],["cb0 1", "cb1 1", "cb2 1"]]]
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.aaa from
> `complex.json` t limit 1;
> +------------+
> | aaa |
> +------------+
> | [[["aa0 1"],["ab0 1"]],[["ba0 1"],["bb0 1"]],[["ca0 1","ca1 1"],["cb0
> 1","cb1 1","cb2 1"]]] |
> +------------+
> 1 row selected (0.251 seconds)
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.aaa[0] from
> `complex.json` t limit 1;
> +------------+
> | EXPR$0 |
> +------------+
> | [["aa0 1"],["ab0 1"]] |
> +------------+
> {code}
> When I drill down further, I got the following error:
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.aaa[0][0] from
> `complex.json` t limit 1;
> Query failed: RemoteRpcException: Failure while running fragment., You tried
> to read a [CopyAsValueList] type when you are using a field reader of type
> [RepeatedVarCharReaderImpl]. [ 32a45935-dd76-4044-9924-1ec0c5e22c2e on
> qa-node120.qa.lab:31010 ]
> [ 32a45935-dd76-4044-9924-1ec0c5e22c2e on qa-node120.qa.lab:31010 ]
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> {code}
> drillbit.log
> {code}
> 2015-03-03 14:49:04,925 [2b09c59e-b3e7-2bc1-cca3-a398a805119b:frag:0:0] WARN
> o.a.d.e.w.fragment.FragmentExecutor - Error while initializing or executing
> fragment
> java.lang.IllegalArgumentException: You tried to read a [CopyAsValueList]
> type when you are using a field reader of type [RepeatedVarCharReaderImpl].
> at
> org.apache.drill.exec.vector.complex.impl.AbstractFieldReader.fail(AbstractFieldReader.java:806)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.vector.complex.impl.AbstractFieldReader.copyAsValue(AbstractFieldReader.java:269)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.test.generated.ProjectorGen79382.doEval(ProjectorTemplate.java:82)
> ~[na:na]
> at
> org.apache.drill.exec.test.generated.ProjectorGen79382.projectRecords(ProjectorTemplate.java:62)
> ~[na:na]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.doWork(ProjectRecordBatch.java:174)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:93)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:134)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142)
> ~[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.record.AbstractRecordBatch.next(AbstractRecordBatch.java:99)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:89)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.limit.LimitRecordBatch.innerNext(LimitRecordBatch.java:113)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142)
> ~[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.record.AbstractRecordBatch.next(AbstractRecordBatch.java:99)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:89)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.svremover.RemovingRecordBatch.innerNext(RemovingRecordBatch.java:96)
> ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142)
> ~[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-SNN
> APSHOT-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.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:97)
> ~[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:115)
> ~[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}
> plan:
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> explain plan for select
> t.aaa[0][0] from `complex.json` t limit 1;
> +------------+------------+
> | text | json |
> +------------+------------+
> | 00-00 Screen
> 00-01 SelectionVectorRemover
> 00-02 Limit(fetch=[1])
> 00-03 Project(EXPR$0=[ITEM(ITEM($0, 0), 0)])
> 00-04 Scan(groupscan=[EasyGroupScan
> [selectionRoot=/drill/testdata/complex_type/json/complex.json, numFiles=1,
> columns=[`aaa`[0][0]],
> files=[maprfs:/drill/testdata/complex_type/json/complex.json]]])
> {code}
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