UpdateSentinelAddressList is failing with error: EndPoints must be unique #1430
Description
I am getting the following error attempting to use sentinel support. I'm guessing this is some sort of concurrency issue, but I'm not sure. I will try and get a repro together.
EndPoints must be unique (Parameter 'item')
System.ArgumentException: EndPoints must be unique (Parameter 'item')
at StackExchange.Redis.EndPointCollection.InsertItem(Int32 index, EndPoint item) in /_/src/StackExchange.Redis/EndPointCollection.cs:line 71
at StackExchange.Redis.ConnectionMultiplexer.UpdateSentinelAddressList(String serviceName) in /_/src/StackExchange.Redis/ConnectionMultiplexer.cs:line 2400
at StackExchange.Redis.ConnectionMultiplexer.SwitchMaster(EndPoint switchBlame, ConnectionMultiplexer connection, TextWriter log) in /_/src/StackExchange.Redis/ConnectionMultiplexer.cs:line 2376
at StackExchange.Redis.ConnectionMultiplexer.GetSentinelMasterConnection(ConfigurationOptions config, TextWriter log) in /_/src/StackExchange.Redis/ConnectionMultiplexer.cs:line 2255
at Exceptionless.Insulation.Bootstrapper.GetRedisConnection(Dictionary`2 options) in /app/src/Exceptionless.Insulation/Bootstrapper.cs:line 166