Bug #88220 compressing and uncompressing InnoDB tables seems to be inconsistent
Submitted: 25 Oct 2017 8:28 Modified: 16 Jan 2018 5:45
Reporter: Simon Mudd (OCA) Email Updates:
Status: Won't fix Impact on me:
None 
Category:MySQL Server: Storage Engines Severity:S3 (Non-critical)
Version:5.7.18 OS:Any
Assigned to: CPU Architecture:Any
Tags: compression, innodb, key_block_size

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: