[HIVE-17874] Parquet vectorization fails on tables with complex columns when there are no projected columns

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.4.0, 3.0.0
• Assignee: Vihang Karajgaonkar
• Reporter: Vihang Karajgaonkar
• Created: 22/Oct/17 23:11
• Updated: 22/May/18 23:14
• Resolved: 06/Nov/17 22:26

Description

When a parquet table contains an unsupported type like Map, LIST or UNION simple queries like select count from table fails with unsupported type exception even though vectorized reader doesn't really need read the complex type into batches.