br: checksum too slow after restore 1 million tables

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#60,203 opened on Mar 21, 2025 1 comment 0 reactions 0 assignees View on GitHub

component/br may-affects-6.1 may-affects-6.5 may-affects-7.1 may-affects-7.5 may-affects-8.1 may-affects-8.5 severity/major type/bug

Description

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)
1. open logbackup task
2. restore 1 milltion tables(500000 dbs, 2 tables per db)

### 2. What did you expect to see? (Required)
no issue
### 3. What did you see instead (Required)
checksum is too slow (5h+)

![Image](https://github.com/user-attachments/assets/4dc84860-0296-4020-b2c1-2450e123364c)

### 4. What is your TiDB version? (Required)
v9.0

This issue has not been assessed yet.