Hi,--I am new to Gremlin/Titan/Cassandara.I am working on the POC. I am able to run the queries via gremlin console.Now i am trying to connect via gremlin java driver and getting below issue. Its a timeout exception. posted the exception below. I tried to run this sample class inside the server with standalone java and outside the server.both the places I am getting same exception. I have changed the websocketchannalizer in gremlin.server.yaml and restarted the server.1:54:39 [main] DEBUG io.netty.util.internal.JavassistTypeParameterMatcherGenerator - Generated: io.netty.util.internal.__matchers__.io.netty.handler.codec.http.websocketx.WebSocketFrameMatcher11:54:39 [gremlin-driver-loop-1] DEBUG io.netty.util.internal.JavassistTypeParameterMatcherGenerator - Generated: io.netty.util.internal.__matchers__.io.netty.handler.codec.http.HttpObjectMatcher11:54:39 [gremlin-driver-loop-1] DEBUG io.netty.util.ResourceLeakDetector - -Dio.netty.noResourceLeakDetection: false11:54:39 [gremlin-driver-loop-1] WARN io.netty.channel.ChannelInitializer - Failed to initialize a channel. Closing: [id: 0x2a4ed403]java.lang.NoSuchMethodError: io.netty.util.AttributeKey.valueOf(Ljava/lang/String;)Lio/netty/util/AttributeKey;at org.apache.tinkerpop.gremlin.driver.Handler$GremlinSaslAuthenticationHandler.<clinit>(Handler.java:67) ~[gremlin-driver-3.0.2-incubating.jar:3.0.2-incubating]at org.apache.tinkerpop.gremlin.driver.Channelizer$AbstractChannelizer.initChannel(Channelizer.java:140) ~[gremlin-driver-3.0.2-incubating.jar:3.0.2-incubating]at org.apache.tinkerpop.gremlin.driver.Channelizer$AbstractChannelizer.initChannel(Channelizer.java:81) ~[gremlin-driver-3.0.2-incubating.jar:3.0.2-incubating]at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:70) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRegistered(DefaultChannelHandlerContext.java:188) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.DefaultChannelHandlerContext.fireChannelRegistered(DefaultChannelHandlerContext.java:174) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.DefaultChannelPipeline.fireChannelRegistered(DefaultChannelPipeline.java:730) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:418) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.AbstractChannel$AbstractUnsafe.access$100(AbstractChannel.java:359) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:395) [netty-all-4.0.0.Final.jar:?]at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:353) [netty-all-4.0.0.Final.jar:?]at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:366) [netty-all-4.0.0.Final.jar:?]at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [netty-all-4.0.0.Final.jar:?]at java.lang.Thread.run(Thread.java:745) [?:1.8.0_65]11:54:39 [main] DEBUG org.apache.tinkerpop.gremlin.driver.Connection - Error opening connection on ws://155.111.203.23:8182/gremlin11:54:39 [main] DEBUG org.apache.tinkerpop.gremlin.driver.ConnectionPool - Could not initialize connections in pool for Host{address=155.111.203.23/155.111.203.23:8182, hostUri=ws://155.111.203.23:8182/gremlin} - pool size at 011:54:39 [main] WARN org.apache.tinkerpop.gremlin.driver.Client - Could not initialize connection pool for Host{address=155.111.203.23/155.111.203.23:8182, hostUri=ws://155.111.203.23:8182/gremlin} - will try laterIs connected=org.apache.tinkerpop.gremlin.driver.Client$ClusteredClient@45efd90f11:54:39 [main] DEBUG org.apache.tinkerpop.gremlin.driver.Client - Submitted RequestMessage{, requestId=58200417-abec-4ca3-83c5-5f2c30a0caa1, op='eval', processor='', args={batchSize=64, gremlin=g.V()}} to - connection not initializedjava.lang.RuntimeException: java.lang.RuntimeException: java.util.concurrent.TimeoutException: Timed out waiting for an available host.at org.apache.tinkerpop.gremlin.driver.Client.submit(Client.java:135)at org.apache.tinkerpop.gremlin.driver.Client.submit(Client.java:119)Thanks,Kalai.
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