We received “NodeUnavailableException: The node xx.xxx.xx.xx:11210 that the key was mapped to is either down or unreachable. The SDK will continue to try to connect every 1000ms. Until it can connect every operation routed to it will fail with this exception”
We started receiving at 3:00:18.044 PM until 3:02:07.569 PM. Our team was doing maintenance work on the cluster machines but after gracefully shutting it down, adding it back and then rebalancing one-by-one. The bucket is of memcached type and there are 2 machines involved in the cluster.
However, we were expecting the .NET SDK client v2.4.8 to read the cache from the other functioning nodes in this scenario as per https://developer.couchbase.com/documentation/server/3.x/developer/dev-guide-3.0/failover.html
Is there any parameter (SendTimeout, NodeAvailableCheckInterval, IOErrorThreshold etc.) that we can tweak to fix this kind of error?
Any help is appreciated.