Bug #72439 Deadlock using SELECT … FOR UPDATE in MySQL
Submitted: 24 Apr 2014 13:42 Modified: 13 Nov 2014 8:00
Reporter: Joaquin Cuenca Abela Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Locking Severity:S3 (Non-critical)
Version:5.5.35 OS:Any
Assigned to: CPU Architecture:Any
Tags: deadlock, locks

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: