Bug #82774 Reasonably easy to generate mysqld semi-hang. Input file is 1K lines.
Submitted: 29 Aug 2016 3:13 Modified: 13 Apr 2017 22:01
Reporter: Roel Van de Paar Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Locking Severity:S3 (Non-critical)
Version:5.7.13 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:

[29 Aug 2016 3:17] Roel Van de Paar
out3.sql, pquery_h1, and full processlist

Attachment: 82774_bug_bundle.tar.gz (application/x-gzip, text), 2.00 MiB.