[SPARK-34565] Collapse Window nodes with Project between them

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 3.2.0
• Component/s: SQL
• Assignee: Tanel Kiis
• Reporter: Tanel Kiis
• Created: 27/Feb/21 22:44
• Updated: 21/Jun/21 13:11
• Resolved: 21/Jun/21 13:11

Description

The CollapseWindow optimizer rule can be improved to also collapse Window nodes, that have a Project between them. This sort of Window - Project - Window chains will happen when chaining the dataframe.withColumn calls.

Issue Links

• links to: [Github] Pull Request #31677 (tanelk)
• links to: [Github] Pull Request #31677 (tanelk)