Low kv request tidb instance report "cannot reserve enough tokens"
Open
affects-7.5
affects-8.1
affects-8.5
contribution
may-affects-6.5
may-affects-7.1
severity/major
type/bug
- Dominant language
- Go
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- Avg merge
- 5d 21h
- Merged PRs (30d)
- 36
Description
## Bug Report
### What did you do?
The “kv requests” initiated by TiDB are highly unbalanced among instances, while one TiDB instance with very low kv requests keep getting a large number of tokens but seemingly never get enough receive them, for there are many failures due to "cannot reserve enough tokens".
### What did you expect to see?
### What did you see instead?
### What version of PD are you using (`pd-server -V`)?
v7.5.6
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Assessment
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