codis+pika主从同步失败

[chenjing7232]

codis版本：codis-pika-v1.1.0.tar.bz2
pika版本：3.3.6
操作：codis web上主从同步操作
报错如下：
images.githubusercontent.com/14304247/109583389-cd713480-7b3a-11eb-93d8-328ea4d43062.png">
2021/03/02 09:31:50 topom_group.go:496: [WARN] redis ***:9221 set master to ***:9221 failed
[error]: ERR This command is not supported in current configuration
4 /home/spinlock/.gopath/src/github.com/CodisLabs/codis/pkg/utils/redis/redis.go:55
github.com/CodisLabs/codis/pkg/utils/redis.(*Client).Do
3 /home/spinlock/.gopath/src/github.com/CodisLabs/codis/pkg/utils/redis/redis.go:141
github.com/CodisLabs/codis/pkg/utils/redis.(*Client).SetMaster
2 /home/spinlock/.gopath/src/github.com/CodisLabs/codis/pkg/topom/topom_group.go:495
github.com/CodisLabs/codis/pkg/topom.(*Topom).newSyncActionExecutor.func1
1 /home/spinlock/.gopath/src/github.com/CodisLabs/codis/pkg/topom/topom_action.go:73
github.com/CodisLabs/codis/pkg/topom.(*Topom).ProcessSyncAction
0 /home/spinlock/.gopath/src/github.com/CodisLabs/codis/pkg/topom/topom.go:230
github.com/CodisLabs/codis/pkg/topom.(*Topom).Start.func4

sharding模式下不支持slaveof命令吗？但官方文档上是说codis+pika，是要使用sharidng模式的，求大佬告知问题出在哪里？跪谢！

127.0.0.1:9221> config get instance-mode

1. "instance-mode"
2. "sharding"
   127.0.0.1:9221> slaveof 10.81.75.4 9221
   (error) ERR This command is not supported in current configuration

[kernelai]

原版codis发送主从同步采用事务的方式，pika是不支持事务的，因此需要修改下官方codis的少量代码。参考https://github.com/Qihoo360/pika/wiki/Support-Cluster-Slots