Bug #78943 EXPLAIN FORMAT="JSON" ignores FORCE INDEX for some output parts
Submitted: 23 Oct 2015 13:52 Modified: 26 Oct 2015 7:19
Reporter: Jan Kahoun Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:5.6.24-72.2-log, 5.6.27 OS:Ubuntu (14.04)
Assigned to: CPU Architecture:Any
Tags: explain, Optimizer, used_key_parts

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: