BR restore: memory usage optimization for large number of tables

Open

#38,892 opened on Nov 4, 2022 0 comments 0 reactions 1 assignee Claimed by @3pointer View on GitHub

component/br type/enhancement

Description

## Enhancement
br restore 100k tables, with total 20m rows for 100k tables.

It takes 13G memory to restore 100k tables. There is potential to optimize the memory usage.

![img_v2_a0e285f1-d8bd-412a-943f-15d1e4c96b5g](https://user-images.githubusercontent.com/2316425/199911773-c56b36b4-b72b-495a-b02d-5769a5619b0f.png)

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