Mehant Baid created DRILL-1278:
----------------------------------
Summary: Selecting individual fields from a map with a join fails
with IllegalStateException
Key: DRILL-1278
URL: https://issues.apache.org/jira/browse/DRILL-1278
Project: Apache Drill
Issue Type: Bug
Reporter: Mehant Baid
Assignee: Mehant Baid
I have the following json file
bug.json
{"col" : {"name" : "foo", "id": 1}, "col1": 1}
{"col" : {"name" : "bar", "id": 2}, "col1": 2}
Have the same data in another file bug1.json.
The following query succeeds and returns the right result.
select b.col from dfs.`bug.json` b, dfs.`bug1.json` b1 where b.col1 = b1.col1;
However selecting an individual field from the 'col' map fails.
select b.col.name from dfs.`bug.json` b, dfs.`bug1.json` b1 where b.col1 =
b1.col1;
Below is the stack trace
java.lang.IllegalStateException
Incoming batch has an empty schema. This is not allowed.
at
org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:128)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:75)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:65)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:45)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:120)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:95)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:116)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:59)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:98)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:49)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:105)
~[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-SNAPSHOT]
at
org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:250)
[drill-java-exec-0.5.0-incubating-SNAPSHOT-rebuffed.jar:0.5.0-incubating-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]
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