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https://issues.apache.org/jira/browse/DRILL-1646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201517#comment-14201517
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Venkata krishnan Sowrirajan commented on DRILL-1646:
----------------------------------------------------
If the second record has actual data, then its not failing. Its giving the
second record as result. I am seeing the same behavior as you said, the empty
column it didn't treat as an existing column.
Data
{
"a":[],
"b":[1,2,3]
}
0: jdbc:drill:> select * from `json/sample.json`;
+------------+
| b |
+------------+
| ["1","2","3"] |
+------------+
1 row selected (0.529 seconds)
> Drill cannot handle empty array/list types in JSON documents
> ------------------------------------------------------------
>
> Key: DRILL-1646
> URL: https://issues.apache.org/jira/browse/DRILL-1646
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Venkata krishnan Sowrirajan
>
> To reproduce
> JSON sample data:
> {
> "a":[]
> }
> Problem: Empty array
> Exception:
> java.lang.IllegalStateException: Incoming batch has an empty schema. This is
> not allowed
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