The remote side disconnected the endpoint unexpectedly - warn in Java sdk 3.0 + couchbase server 6.5.1

Couchbase Server
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@Poltar as far as your issue with the messages RE “circuitBreaker”:“DISABLED” as I also got in my test setup

Jun 12, 2020 9:29:32 AM com.couchbase.client.core.cnc.LoggingEventConsumer$JdkLogger warn
WARNING: [com.couchbase.endpoint][UnexpectedEndpointDisconnectedEvent] The remote side disconnected the endpoint unexpectedly {"circuitBreaker":"DISABLED","coreId":"0x15ed0a3e00000001","local":"192.168.3.249:50781","remote":"192.168.3.150:8093","type":"QUERY"}

the new Java SDK seems to have lowered a key server setting from 30 seconds down to 5 seconds adjusting idleHttpConnectionTimeout to 4 seconds will eliminate the messages you see.

Note setting the other item to 12 i.e. queryThreshold seems to clean up another log file message that I see in my specific test jig you may or may not need this.

ClusterEnvironment env = ClusterEnvironment.builder()
			.ioConfig(IoConfig.idleHttpConnectionTimeout(Duration.ofSeconds(4)))
			.requestTracer(ThresholdRequestTracer.builder(null)
			.queryThreshold(Duration.ofSeconds(12)).build())
			.build();

Sorry I can’t provide the internal details on the why and how this works. I only got the messages suppressed/cleaned up with some help from @daschl

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