[HIVE-8926] Projections that only swap input columns are identified incorrectly as identity projections

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.15.0
• Fix Version/s: 1.1.0
• Component/s: Logical Optimizer
• Assignee: Jesús Camacho Rodríguez
• Reporter: Jesús Camacho Rodríguez
• Created: 20/Nov/14 17:47
• Updated: 27/Feb/24 22:24
• Resolved: 23/Nov/14 06:32

Description

Projection operators that only swap the input columns in the tuples are identified as identity projections, and thus incorrectly deleted from the plan by the identity project removal optimization.

This bug was introduced in HIVE-8435.

Issue Links

• relates to: HIVE-8435 Add identity project remover optimization
• links to: RB request