FitRegion costs a lot after adding scatter range scheduler

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#3,594 opened on Apr 15, 2021 0 comments 0 reactions 0 assignees View on GitHub

type/enhancement

Description

FitRegion of placement rules costs a lot

![image](https://user-images.githubusercontent.com/19542290/114817990-8f2f8c00-9ded-11eb-859f-7c21bc73b04e.png)

![image](https://user-images.githubusercontent.com/19542290/114818044-a53d4c80-9ded-11eb-8ada-aa75d24e7902.png)

![image](https://user-images.githubusercontent.com/19542290/114817867-568fb280-9ded-11eb-956e-b652e1e931d0.png)

There are 33 stores and 800k peers in the cluster

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