[HIVE-11252] CBO (Calcite Return Path): DUMMY project in plan

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: CBO
• Assignee: Jesús Camacho Rodríguez
• Reporter: Jesús Camacho Rodríguez
• Created: 14/Jul/15 13:56
• Updated: 27/Feb/24 22:12
• Resolved: 14/Jul/15 18:27

Description

When the return path is on, we might end up with a Project with DUMMY column in the plan; thus, we need to run the ProjectMergeRule after the column trimmer runs for the second time. To reproduce it, we can run interval_udf.q with the return path on.