Bug #93957 slave_compressed_protocol doesn't work with semi-sync replication in MySQL-5.7
Submitted: 17 Jan 2019 8:25 Modified: 1 Oct 2019 9:49
Reporter: Pavel Katiushyn Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: Replication Severity:S2 (Serious)
Version:5.7.24 OS:Any
Assigned to: CPU Architecture:Any
Tags: compression, protocol, replication, semisynchronous

[17 Jan 2019 8:25] Pavel Katiushyn 
Description:
Semi-synchronouse replication does not work, when slave_compressed_protocol is enabled.
The issue was reported and closed earlier: Bug #86230.
But I experienced the same problem on 5.7.24.

How to repeat:
See Bug #86230 for the steps.
Basically, install master and slave with 5.7.24.
Configure semi-sync replication according to documentation: https://dev.mysql.com/doc/refman/5.7/en/replication-semisync-installation.html

Enable slave_compressed_protocol=1 on slave, re-connect slave to master and try to write any data.
[17 Jan 2019 8:31] Pavel Katiushyn 
Forgot to add, that the tested case was with GTID replication enabled.
[17 Jan 2019 12:52] MySQL Verification Team 
Hello Pavel,

Thank you for the report.

regards,
Umesh
[5 May 2019 9:15] chaofei yu 
In which version will this problem be fixed?
[1 Oct 2019 9:49] Pavel Katiushyn 
Any updates on this?
[13 Jul 2023 3:11] Biao You 
my db is 5.7.28 still see the same ERROR messages...