org.jboss.netty.channel.ChannelException: Failed to open a socket.

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    • org.jboss.netty.channel.ChannelException: Failed to open a socket. at org.jboss.netty.channel.socket.nio.NioClientSocketChannel.newSocket(NioClientSocketChannel.java:43)[netty-3.10.4.Final.jar:?] at org.jboss.netty.channel.socket.nio.NioClientSocketChannel.<init>(NioClientSocketChannel.java:82)[netty-3.10.4.Final.jar:?] at org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory.newChannel(NioClientSocketChannelFactory.java:212)[netty-3.10.4.Final.jar:?] at org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory.newChannel(NioClientSocketChannelFactory.java:82)[netty-3.10.4.Final.jar:?] at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:212)[netty-3.10.4.Final.jar:?] at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:182)[netty-3.10.4.Final.jar:?] at com.metamx.http.client.pool.ChannelResourceFactory.generate(ChannelResourceFactory.java:84)[http-client-1.0.4.jar:?] at com.metamx.http.client.pool.ChannelResourceFactory.generate(ChannelResourceFactory.java:41)[http-client-1.0.4.jar:?] at com.metamx.http.client.pool.ResourcePool$ImmediateCreationResourceHolder.get(ResourcePool.java:188)[http-client-1.0.4.jar:?] at com.metamx.http.client.pool.ResourcePool.take(ResourcePool.java:76)[http-client-1.0.4.jar:?] at com.metamx.http.client.NettyHttpClient.go(NettyHttpClient.java:133)[http-client-1.0.4.jar:?] at com.metamx.http.client.AbstractHttpClient.go(AbstractHttpClient.java:14)[http-client-1.0.4.jar:?] at io.druid.client.DirectDruidClient.run(DirectDruidClient.java:326)[druid-server-0.9.0.jar:0.9.0] at io.druid.client.CachingClusteredClient$2.addSequencesFromServer(CachingClusteredClient.java:386)[druid-server-0.9.0.jar:0.9.0] at io.druid.client.CachingClusteredClient$2.get(CachingClusteredClient.java:316)[druid-server-0.9.0.jar:0.9.0] at io.druid.client.CachingClusteredClient$2.get(CachingClusteredClient.java:310)[druid-server-0.9.0.jar:0.9.0] at com.metamx.common.guava.LazySequence.toYielder(LazySequence.java:43)[java-util-0.27.7.jar:?] at io.druid.query.RetryQueryRunner$1.toYielder(RetryQueryRunner.java:105)[druid-processing-0.9.0.jar:0.9.0] at io.druid.common.guava.CombiningSequence.toYielder(CombiningSequence.java:79)[druid-common-0.9.0.jar:0.9.0] at com.metamx.common.guava.MappedSequence.toYielder(MappedSequence.java:46)[java-util-0.27.7.jar:?] at com.metamx.common.guava.MappedSequence.toYielder(MappedSequence.java:46)[java-util-0.27.7.jar:?] at io.druid.query.CPUTimeMetricQueryRunner$1.toYielder(CPUTimeMetricQueryRunner.java:93)[druid-processing-0.9.0.jar:0.9.0] at com.metamx.common.guava.Sequences$1.toYielder(Sequences.java:98)[java-util-0.27.7.jar:?] at io.druid.server.QueryResource.doPost(QueryResource.java:167)[druid-server-0.9.0.jar:0.9.0] at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.7.0_101] at java.lang.reflect.Method.invoke(Method.java:606)[?:1.7.0_101] at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)[jersey-server-1.19.jar:1.19] at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)[jersey-servlet-1.19.jar:1.19] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)[jersey-servlet-1.19.jar:1.19] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)[jersey-servlet-1.19.jar:1.19] at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)[javax.servlet-api-3.1.0.jar:3.1.0] at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:278)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:268)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:180)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:93)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:132)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:129)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:206)[guice-servlet-4.0-beta.jar:?] at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:129)[guice-servlet-4.0-beta.jar:?] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)[jetty-servlet-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83)[jetty-servlets-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:364)[jetty-servlets-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)[jetty-servlet-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)[jetty-servlet-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)[jetty-servlet-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1059)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.Server.handle(Server.java:497)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:248)[jetty-server-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)[jetty-io-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:620)[jetty-util-9.2.5.v20141112.jar:9.2.5.v20141112] at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)[jetty-util-9.2.5.v20141112.jar:9.2.5.v20141112] at java.lang.Thread.run(Thread.java:745)[?:1.7.0_101] Caused by: java.net.SocketException: Too many open files at sun.nio.ch.Net.socket0(Native Method)[?:1.7.0_101] at sun.nio.ch.Net.socket(Net.java:441)[?:1.7.0_101] at sun.nio.ch.Net.socket(Net.java:434)[?:1.7.0_101] at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:105)[?:1.7.0_101] at sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:60)[?:1.7.0_101] at java.nio.channels.SocketChannel.open(SocketChannel.java:142)[?:1.7.0_101] at org.jboss.netty.channel.socket.nio.NioClientSocketChannel.newSocket(NioClientSocketChannel.java:41)[netty-3.10.4.Final.jar:?] ... 71 more

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