Bug #74071 69097 has been fixed in 5.6.21 but not documented
Submitted: 25 Sep 2014 12:33 Modified: 30 Sep 2014 10:59
Reporter: Laurynas Biveinis (OCA) Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version:5.6.21 OS:Any
Assigned to: David Moss 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: