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Posted to dev@tinkerpop.apache.org by "Florian Hockmann (JIRA)" <ji...@apache.org> on 2019/03/14 16:04:00 UTC
[jira] [Closed] (TINKERPOP-2148) "no connection available!" is
being thrown despite lots of free connections
[ https://issues.apache.org/jira/browse/TINKERPOP-2148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Florian Hockmann closed TINKERPOP-2148.
---------------------------------------
Resolution: Fixed
Fix Version/s: 3.4.1
> "no connection available!" is being thrown despite lots of free connections
> ---------------------------------------------------------------------------
>
> Key: TINKERPOP-2148
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2148
> Project: TinkerPop
> Issue Type: Bug
> Components: dotnet
> Affects Versions: 3.4.0
> Environment: Windows 10, C#, .NET Core, CosmosDB Graph
> Reporter: Zaoshi
> Assignee: Florian Hockmann
> Priority: Minor
> Fix For: 3.4.1
>
>
> I am submitting multiple graph queries in parallel but in some cases it starts throwing this exception:
> {{Gremlin.Net.Driver.Exceptions.NoConnectionAvailableException : no connection available!}}
> {{ at Gremlin.Net.Driver.ConnectionPool.GetAvailableConnectionAsync()}}
> {{ at Gremlin.Net.Driver.GremlinClient.SubmitAsync[T](RequestMessage requestMessage)}}
> When GremlinClient is initialized with \{PoolSize = 1, MaxInProcessPerConnection = 8} everything works fine, however, with \{PoolSize = 8, MaxInProcessPerConnection = 1} it starts throwing those exceptions even though this connection pool should have same throughput. I have tried to increase pool to \{PoolSize = 128, MaxInProcessPerConnection = 1} but GremlinClient started to fail even more.
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