[jira] [Created] (DRILL-1770) Flatten on top a subquery which applies flatten over kvgen results in a ClassCastException

[Rahul Challapalli (JIRA)]

Rahul Challapalli created DRILL-1770:
----------------------------------------

             Summary: Flatten on top a subquery which applies flatten over 
kvgen results in a ClassCastException
                 Key: DRILL-1770
                 URL: https://issues.apache.org/jira/browse/DRILL-1770
             Project: Apache Drill
          Issue Type: Bug
          Components: Functions - Drill, Storage - JSON
            Reporter: Rahul Challapalli


git.commit.id.abbrev=108d29f

Dataset :
{code}
{"map":{"rm": [ {"rptd": [{ "a": "foo"}]}]}}
{code}

Query :
{code}
select flatten(sub.fk.`value`) from (select flatten(kvgen(map)) fk from 
`nested.json`) sub;
Query failed: Failure while running fragment., 
org.apache.drill.exec.vector.NullableIntVector cannot be cast to 
org.apache.drill.exec.vector.RepeatedVector
{code}

Let me know if you need more information.



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