[DRILL-7491] Incorrect count() returned for complex types in parquet

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.16.0, 1.17.0
• Fix Version/s: 1.18.0
• Component/s: Functions - Drill, Functions - Hive, Storage - Parquet
• Labels: ready-to-commit
• Assignee: Igor Guzenko
• Reporter: Igor Guzenko
• Reviewer: Arina Ielchiieva
• Created: 19/Dec/19 11:22
• Updated: 31/Jan/20 05:21
• Resolved: 23/Jan/20 15:56

Description

To reproduce use the attached file for hive_alltypes.parquet (this is parquet file generated by Hive) and try count on columns c13 - c15.  For example, 

SELECT count(c13) FROM dfs.tmp.`hive_alltypes.parquet`

Expected result: 3
Actual result: 0

Issue Links

• links to: GitHub Pull Request #1955