Bug #70737 MySQL's dirs tree is a bit different from what the docs says
Submitted: 26 Oct 2013 22:57 Modified: 12 Jan 2018 0:25
Reporter: Federico Razzoli Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version:5.6 OS:Windows (XP)
Assigned to: Christine Cole 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: