[jira] [Created] (DRILL-4045) FLATTEN case in testNestedFlatten yields no rows (test didn't detect)

["Daniel Barclay (Drill) (JIRA)" <ji...@apache.org>]

Daniel Barclay (Drill) created DRILL-4045:
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             Summary: FLATTEN case in testNestedFlatten yields no rows (test didn't detect)
                 Key: DRILL-4045
                 URL: https://issues.apache.org/jira/browse/DRILL-4045
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Relational Operators
            Reporter: Daniel Barclay (Drill)


The case of using {{FLATTEN}} on nested lists appearing in {{TestComplexTypeReader.testNestedFlatten()}} yields no rows.

Part of the problem is that in the code generated by {{FlattenRecordBatch}}, the methods are empty.

(That test method doesn't check the results, so, previous to DRILL-2288 work, the problem was not detected. 

However, with DRILL-2288 fixes, the flatten problem causes an {{IllegalArgumentException}} (logically, an assertion exception) in RecordBatchLoader, so the test is being disabled (with @Ignore) as part of DRILL-2288.)





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