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From "Chun Chang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2366) Query nested lists causing IllegalArgumentException
Date Tue, 03 Mar 2015 23:04:05 GMT
Chun Chang created DRILL-2366:
---------------------------------

             Summary: 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: Daniel Barclay (Drill)


#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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