Bug #79148 Virtual columns makes mysqldump unusable.
Submitted: 6 Nov 2015 5:46 Modified: 9 Nov 2015 6:59
Reporter: Peter Laursen (Basic Quality Contributor) Email Updates:
Status: Can't repeat Impact on me:
None 
Category:MySQL Server: mysqldump Command-line Client Severity:S1 (Critical)
Version:5.7.8 OS:Windows (probably any)
Assigned to: CPU Architecture:Any

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: