Bug #68977 Documentation states that MRR cost optimizer is disabled by default
Submitted: 16 Apr 2013 21:50 Modified: 19 Apr 2013 17:00
Reporter: Justin Swanhart Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S5 (Performance)
Version:5.6.10 OS:Any
Assigned to: Paul DuBois 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: