问题
I deployed 3 Kaa clusters follow the kaa Cluster setup guide document.
The databases are MongoDB and MariaDB. When I run C Client(I make a code change that every client can login in three kaa servers in random) firstly, it can login in kaa server and send or receive event. But after I stop the Client and start it secondly, it can not send or receive event.
Then I try to do it again and again. But almost it is bad. I will upload the server log and the Client log .
The error maybe caused by kaa cluster. I generated a Java and Android Client SDK.The problem would also take place while I run Java and Android Client .
来源：https://stackoverflow.com/questions/41057935/the-error-that-cant-send-and-receive-event-in-kaa-cluster