schedule: redudant schedule in large clusters when the number of regions is small #8184
Labels
affects-7.1
This bug affects the 7.1.x(LTS) versions.
report/customer
Customers have encountered this bug.
type/enhancement
The issue or PR belongs to an enhancement.
Enhancement Task
There are less than only 1000 regions
![image](https://private-user-images.githubusercontent.com/19542290/331214467-d5be8d86-301e-4867-9de2-7b8ceec9ccd8.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.aVFCVO8eBg92m-ZqnRbfSZL8lg5MQJPg_3Wipb3Nl4U)
![image](https://private-user-images.githubusercontent.com/19542290/331214436-e256dea9-36ff-4553-89bc-086e1c5d125f.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.-zf9oZPS0YnizDJmdlt2KKmFQlAdOK2iBykIv4Dmeco)
![image](https://private-user-images.githubusercontent.com/19542290/331214545-809c9ec2-7470-40fe-acd8-3f70f7bbead9.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.yOVqZP5gsXDMB7o5oNm9C0XCq79-xJdVWOA6HFNzrnU)
There are 100000 regions
![image](https://private-user-images.githubusercontent.com/19542290/331219503-0f433c4d-b794-4097-9fdf-833ba8a98ed2.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.TznaSF-Y-bDdg9ACjlpDWZM1b5PPCvWATUVBA9RnQL8)
![image](https://private-user-images.githubusercontent.com/19542290/331219641-31993314-40ee-4221-ba3b-5bb9cfb88417.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.W27yLMu6BZ3-koYnhiWiEFpnG2uYlIPcr7AXgBx69tM)
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