Description
If a connection cannot be established, the log message is along the lines of:
[5/31/18 11:48:45:495 MST] 0000009f SystemOut O 11:48:45.492 [RxComputationScheduler-9] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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Unfortunately, that does not identify the host/port or the timeout. Looking at the code, the underlying exception does return a string, but we don't include that in our log message. Also, we don't log the configured timeout, if any. It'd be great to improve this with more context.
A full log message from an environment where it's not understood what's happening at the moment is:
[5/31/18 11:48:45:495 MST] 0000009f SystemOut O 11:48:45.492 [RxComputationScheduler-9] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:45:496 MST] 000000a0 SystemOut O 11:48:45.492 [RxComputationScheduler-10] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:45:498 MST] 000001d3 SystemOut O 11:48:45.492 [RxComputationScheduler-20] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:45:500 MST] 0000009f SystemOut O 11:48:45.496 [RxComputationScheduler-9] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:45:502 MST] 000001d4 SystemOut O 11:48:45.495 [RxComputationScheduler-21] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:45:504 MST] 000000a0 SystemOut O 11:48:45.498 [RxComputationScheduler-10] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:45:506 MST] 000001d3 SystemOut O 11:48:45.500 [RxComputationScheduler-20] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:52:778 MST] 000000a1 SystemOut O 11:48:52.777 [RxComputationScheduler-11] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:52:780 MST] 000001d5 SystemOut O 11:48:52.777 [RxComputationScheduler-22] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:52:782 MST] 000000a2 SystemOut O 11:48:52.778 [RxComputationScheduler-12] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:52:783 MST] 000001d6 SystemOut O 11:48:52.777 [RxComputationScheduler-23] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Socket connect took longer than specified timeout..
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[5/31/18 11:48:52:785 MST] 000000a1 SystemOut O 11:48:52.780 [RxComputationScheduler-11] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:52:787 MST] 000001d5 SystemOut O 11:48:52.781 [RxComputationScheduler-22] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:52:788 MST] 000000a2 SystemOut O 11:48:52.783 [RxComputationScheduler-12] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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[5/31/18 11:48:52:790 MST] 000001d6 SystemOut O 11:48:52.785 [RxComputationScheduler-23] WARN c.c.client.core.endpoint.Endpoint - [][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 4096 MILLISECONDS: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: Connect callback did not return, hit safeguarding timeout.
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