Bug #77209 Update may use index merge without any reason (increasing chances for deadlock)
Submitted: 1 Jun 2015 11:31 Modified: 25 Feb 2016 18:38
Reporter: Andrii Nikitin Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:5.6.24 OS: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: