[DRILL-6223] Drill fails on Schema changes

• Type: Improvement
• Status: Reviewable
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.10.0, 1.12.0
• Component/s: Execution - Relational Operators
• Assignee: Salim Achouche
• Reporter: Salim Achouche
• Created: 08/Mar/18 16:56
• Updated: 12/Nov/18 08:31

Description

Drill Query Failing when selecting all columns from a Complex Nested Data File (Parquet) Set). There are differences in Schema among the files:

• The Parquet files exhibit differences both at the first level and within nested data types
• A select * will not cause an exception but using a limit clause will
• Note also this issue seems to happen only when multiple Drillbit minor fragments are involved (concurrency higher than one)

Issue Links

• is duplicated by: DRILL-6222 Drill fails on Schema changes
• links to: GitHub Pull Request #1170
• links to: GitHub Pull Request #1170