pingcap / pingcap/tidb

br: fine grained backup always use 4 thread , it should use concurrency config

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#44,124 0 comments 0 reactions 0 assignees View on GitHub
component/br severity/moderate type/bug
Dominant language
Go
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Description

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)
1. full backup
2. fine grained backup 1 range

### 2. What did you expect to see? (Required)
### 3. What did you see instead (Required)
fine grained backup always in 4 goroutine, and backup speed is slow
https://github.com/pingcap/tidb/blob/1b4e842542c956517bac617c07a5a83ad2944e57/br/pkg/backup/client.go#L1067-L1090
### 4. What is your TiDB version? (Required)

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