Bug #105077 As of 8.0.26, mysqldump substitutes utf8mb3 for utf8
Submitted: 29 Sep 2021 15:31 Modified: 30 Sep 2021 17:50
Reporter: Glen Peterson Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Charsets Severity:S3 (Non-critical)
Version:8.0.26 OS:Any
Assigned to: CPU Architecture:Any
Tags: utf8, utf8mb3, utf8mb4

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file: