[CALCITE-5431] Method RelMdUtil$numDistinctVals() wrongly return zero if the method input domainSize is a very large value

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.33.0
• Fix Version/s: 1.33.0
• Component/s: core
• Assignee: Unassigned
• Reporter: Yunhong Zheng
• Created: 13/Dec/22 01:56
• Updated: 04/Jan/23 20:20
• Resolved: 04/Jan/23 20:20

Description

Method RelMdUtil$numDistinctVals() wrongly return zero if the method input domainSize is a very large value. If domainSize is a very large value (like 2 x 10^16), Math.log(1.0 - 1.0 / dSize) will return 0, and domainSize will be set to 0, which is unreasonable in this scenario.

Issue Links

• duplicates: CALCITE-4351 RelMdUtil#numDistinctVals always returns 0 for large inputs
• is related to: CALCITE-4351 RelMdUtil#numDistinctVals always returns 0 for large inputs
• relates to: FLINK-30368 Fix calcite method RelMdUtil$numDistinctVals() wrongly return zero if the method input domainSize much larger than numSelected