[FLINK-30368] Fix calcite method RelMdUtil$numDistinctVals() wrongly return zero if the method input domainSize much larger than numSelected

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.17.0
• Fix Version/s: 1.17.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: Yunhong Zheng
• Reporter: Yunhong Zheng
• Created: 12/Dec/22 04:21
• Updated: 27/Dec/22 08:39
• Resolved: 27/Dec/22 08:39

Description

Fix calcite method RelMdUtil$numDistinctVals() wrongly return zero if the method input domainSize much larger than numSelected. This wrong zero value will affect the selection of join type。 

Issue Links

• is related to: CALCITE-5431 Method RelMdUtil$numDistinctVals() wrongly return zero if the method input domainSize is a very large value
• links to: GitHub Pull Request #21490