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

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.

Forgot to add, that the tested case was with GTID replication enabled.

Hello Pavel,

Thank you for the report.

regards,
Umesh

In which version will this problem be fixed?

Any updates on this?

my db is 5.7.28 still see the same ERROR messages...

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