ddl: add index should limit the split/scatter speed to avoid duration spike in TiKV
Open
affects-8.5
report/customer
type/enhancement
- Dominant language
- Go
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Description
## Enhancement
As described in https://github.com/tikv/pd/issues/9334
Too much scatter will slow down the TiKV raftstore, leading to a spike in duration for foreground business.
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