Bug #77390 Manual does not explain a "deadlock" case of online ALTER
Submitted: 17 Jun 2015 12:54 Modified: 12 Apr 2017 16:27
Reporter: Valeriy Kravchuk Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version:5.6 OS:Any
Assigned to: CPU Architecture:Any
Tags: alter, innodb, metadata, missing manual

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: