salim achouche created DRILL-6528:
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Summary: Planner setting the wrong number of records to read
(Parquet Reader)
Key: DRILL-6528
URL: https://issues.apache.org/jira/browse/DRILL-6528
Project: Apache Drill
Issue Type: Bug
Components: Query Planning & Optimization
Reporter: salim achouche
- Recently fixed the Flat Parquet reader to honor the number of records to read
- Though few tests failed:
TestUnionDistinct.testUnionDistinctEmptySides:356 Different number of records
returned expected:<5> but was:<1>
TestUnionAll.testUnionAllEmptySides:355 Different number of records returned
expected:<5> but was:<1>
- I debugged one of them and realized the Planner was setting the wrong number
of rows to read (in this case, one)
- You can put a break point and see this happening:
Class: ParquetGroupScan
Method: updateRowGroupInfo(long maxRecords)
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