[DRILL-2366] Query nested lists causing IllegalArgumentException

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Component/s: Execution - Data Types
• Assignee: Chun Chang
• Reporter: Chun Chang
• Created: 03/Mar/15 23:03
• Updated: 27/Apr/15 20:55
• Resolved: 26/Mar/15 03:52

Description

#Wed Feb 25 17:07:31 EST 2015
git.commit.id.abbrev=f7ef5ec

I have nested array in a json file looks like this:

 "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"]] |
+------------+

When I drill down further, I got the following error:

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)

drillbit.log

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]

plan:

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]]])

Issue Links

• is depended upon by: DRILL-2375 project more than one column from nested array causes indexoutofbounds exception
• is related to: DRILL-2005 Create table fails to write out a parquet file created from hive- read works fine
• relates to: DRILL-2375 project more than one column from nested array causes indexoutofbounds exception
• links to: GitHub
• links to: ReviewBoard