Redis集群迁移槽点报错：[WARNING] Node xx.xx.xx.xx:6379 has slots in importing state 306

1、现象

Redis集群迁移数据，分配槽点时遇到以下报错：
[root@sink ~]# redis-cli --cluster rebalance --cluster-use-empty-masters 172.0.1.1:6379

Performing Cluster Check (using node 172.0.1.1:6379)
[ERR] Nodes don't agree about configuration!
Check for open slots…
[WARNING] Node 172.0.1.1:6379 has slots in importing state 306.
[WARNING] The following slots are open: 306.
Check slots coverage…
[OK] All 16384 slots covered.
*** Please fix your cluster problems before rebalancing

2、原因

迁移过程中，迁移得槽点数过多，或者有bigkey导致源节点堵塞，引发源主从切换，导致迁移失败

3、解决

登录 172.0.1.1:6379 此节点，使用redis命令取消slots迁移，然后重新修复下集群

# redis-cli -h 172.0.1.1 -p 6379
> cluster setslot 306 stable
# redis-cli --cluster fix 172.0.1.1:6379