Bug #90046 suspect error code in Pipeline_event::convert_log_event_to_packet
Submitted: 13 Mar 2018 13:24 Modified: 12 Apr 2018 5:52
Reporter: Shane Bester (Platinum Quality Contributor) Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: Group Replication Severity:S4 (Feature request)
Version:5.7 OS:Any
Assigned to: CPU Architecture:Any

[13 Mar 2018 13:24] Shane Bester 
Description:
Take a look in

.\mysql-5.7\rapid\plugin\group_replication\include\pipeline_interfaces.h

  int convert_log_event_to_packet()
  {
    int error= 0;
 ...
    if ((error= log_event->write(cache)))
    {
      log_message(MY_ERROR_LEVEL,
       "Unable to convert the event into a packet on the applier!"
        " Error: %d\n", error); /* purecov: inspected */
      return error; /* purecov: inspected */
    }

AFAIK log_event->write returns a bool.

In error logs these days we see things like:

[ERROR] Plugin group_replication reported: 'Unable to convert the event into a packet on the applier! Error: -7

So, what is -7 ?

How to repeat:
Don't treat bool as int.
[14 Mar 2018 4:36] MySQL Verification Team 
Hello Shane,

Thank you for the report and feature request!

Thanks,
Umesh
[12 Apr 2018 5:52] Erlend Dahl 
Duplicate of

Bug#87701 members are exited from GR when 1/3 node tried to rejoin after shutdown under he