Failed to get value by int key from map nested into struct

  @Test
  public void structWithMapByIntKey() throws Exception {
    testBuilder()
        .sqlQuery("SELECT rid, t.str_map.m[1] bk FROM hive.struct_tbl_p t")
        .unOrdered()
        .baselineColumns("rid", "bk")
        .baselineValues(1, 0)
        .baselineValues(2, 3)
        .baselineValues(3, 4)
        .go();
  }

java.lang.IllegalArgumentException: You tried to read a [RepeatedInt] type when you are using a field reader of type [SingleDictReaderImpl].
	at org.apache.drill.exec.vector.complex.impl.AbstractFieldReader.fail(AbstractFieldReader.java:989) ~[classes/:na]
	at org.apache.drill.exec.vector.complex.impl.AbstractFieldReader.read(AbstractFieldReader.java:399) ~[classes/:na]
	at org.apache.drill.exec.test.generated.ProjectorGen1.doEval(ProjectorTemplate.java:28) ~[na:na]
	at org.apache.drill.exec.test.generated.ProjectorGen1.projectRecords(ProjectorTemplate.java:67) ~[na:na]
	at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.doWork(ProjectRecordBatch.java:229) ~[classes/:na]
	at org.apache.drill.exec.record.AbstractUnaryRecordBatch.innerNext(AbstractUnaryRecordBatch.java:117) ~[classes/:na]
	at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:141) ~[classes/:na]
	at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:186) ~[classes/:na]
	at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:237) ~[classes/:na]
	at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:104) ~[classes/:na]
	at org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:83) ~[classes/:na]
	at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:94) ~[classes/:na]
	at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:296) ~[classes/:na]
	at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:283) ~[classes/:na]
	at .......(:0) ~[na:na]
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1746) ~[hadoop-common-2.7.4.jar:na]
	at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:283) ~[classes/:na]
	at org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38) ~[classes/:na]
	at .......(:0) ~[na:na]