pingcap / pingcap/tidb

After executing an INSERT statement in TiDB, the memory usage remains high and is not released.

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#64,256 0 comments 0 reactions 0 assignees View on GitHub
affects-8.5 contribution severity/moderate sig/execution 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)
When importing data using Navicat, a large number of 'INSERT INTO ... VALUES' SQL statements are executed. However, even after the import is completed, the TiDB server’s memory remains high for many hours and does not automatically release.
dashboard chart:

Image

and tidb server flame graph

Image

### 2. What did you expect to see? (Required)

tidb server memory release

### 3. What did you see instead (Required)

### 4. What is your TiDB version? (Required)
v8.5.1

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