Redis cluster slots missing when master goes down and slave becomes master

[Sonal Kumar]

Hi Team,

I have a redis setup with 3 master nodes in my redis cluster.

I was testing for redis master-slave setup.
so I created a new node and added it to existing cluster and made it a slave of one of the masters.
so now I have 3 masters and 1 slave.
It looks something like this 



Now to test redis cluster failover, I shutdown the 6379 node 
so now its slave 6382 should become master.

6382 became master but in this cluster some nodes showed status as fail while some nodes as ok
also 6379 node has released slots in some node while in some it shows its disconnected but still holding on slots.
For ex: 
port 6382


while port 6380 


I am unable to identify why not all nodes are able to sync the same status
and why is cluster failing.

Can someone help me identify the issue which I am missing.

Regards,
Sonal