GracefulMasterTakeover ERROR

[wp741]

hi,there is a [bug]

i closed 176:13306
and then,the topological graph like this：

i closed 177:13306
and then,the topological graph like this：

i closed 175:13306

now,i started 175:13306
176:13306
177:13306
recovery master and slave
and then,the topological graph like this：

now,curl -s http://192.168.11.161:3000/api/graceful-master-takeover/ms02/192.168.11.177/13306

{"Code":"ERROR","Message":"invalid connection","Details":null}

[wp741]

Is this a bug in the program?
Have you tested this scenario?

[jackiesre721]

@wp741 View down http://192.168.11.161:3000/web/cluster/alias/ms02

[jackiesre721]

@wp741 master_info_repository = ‘TABLE’ #778

[wp741]

@liuqian1990

all of mysql servers

[jackiesre721]

@wp741 error log

[jackiesre721]

@wp741 mysql -e -h192.168.11.175 -p13306 -e "show slave status\G"

[wp741]

@liuqian1990 175:13306 is the master

i checked all the servers,not found any error.

[wp741]

when i restarted orchestrator,i can do it success.
so i think this is a bug.

[wp741]

the logs like this：

[martini] Started GET /api/graceful-master-takeover/ms03/192.168.11.175/33306 for 192.168.11.161:41746
2019-03-08 14:53:32 INFO GracefulMasterTakeover: designated master instructed to be 192.168.11.175:33306
2019-03-08 14:53:32 INFO GracefulMasterTakeover: Will let 192.168.11.175:33306 take over its siblings
2019-03-08 14:53:32 INFO moveReplicasViaGTID: Will move 1 replicas below 192.168.11.175:33306 via GTID
[mysql] 2019/03/08 14:53:32 packets.go:36: unexpected EOF
2019-03-08 14:53:32 ERROR Relocating 1 replicas of 192.168.11.177:33306 below 192.168.11.175:33306 turns to be too complex; please do it manually
[martini] Completed 500 Internal Server Error in 17.188608ms

[wp741]

"MySQLConnectionLifetimeSeconds" : 10,