Hello,
I'm using Java Driver Rx (v1.2.0) with MongoDB (v3.2.1).
I'm caching Mongo clients. When the first call to db is made, the client is created and makes the call.
Then, when Mongo goes down and I try to use this cached client, all subsequent requests are "hanging" (because they're queued in the client). This behaviour causes hystrix command timeout.
Since it doesn't timeout or throw any exceptions (it just hangs), therefore the circuit breaker won't open.