java.util.concurrent.RejectedExecutionException

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  • We see the following WARN when bouncing our app servers which use java-driver. This is confusing the users. Can we avoid this by checking if the factory.manager.executor is not shutdown before calling execute on it? {code} lggr=io.netty.util.concurrent.DefaultPromise coztop="java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)" cozappfrm="java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)" cozcls=java.util.concurrent.RejectedExecutionException cozmsg="Task com.datastax.driver.core.Connection$9$1@7c3084de rejected from java.util.concurrent.ThreadPoolExecutor@77717ba1[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 6215]" thwcls=java.util.concurrent.RejectedExecutionException thwmsg=SameAsCauseMessage at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047) at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369) at com.google.common.util.concurrent.MoreExecutors$ListeningDecorator.execute(MoreExecutors.java:550) at com.datastax.driver.core.Connection$9.operationComplete(Connection.java:558) at com.datastax.driver.core.Connection$9.operationComplete(Connection.java:534) at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680) at io.netty.util.concurrent.DefaultPromise.notifyLateListener(DefaultPromise.java:621) at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:138) at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:93) at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:28) at com.datastax.driver.core.Connection$Flusher.run(Connection.java:853) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) at java.lang.Thread.run(Thread.java:745) {code} ----- *_Final fix:_* Reintroduce grace period when shutting down event loop group + testing if executors are shutdown before submitting tasks.
    via by Vishy Kasar,
  • GitHub comment 2907#142746601
    via GitHub by zhiyanshao
    ,
  • GitHub comment 127#222979740
    via GitHub by gravis
    ,
  • GitHub comment 127#222993997
    via GitHub by gravis
    ,
  • {noformat} import com.datastax.driver.core.Cluster; import com.datastax.driver.core.Session; public class ConnectionTest { public static void main(String[] args) throws InterruptedException { Cluster cluster = new Cluster.Builder().addContactPoint("127.0.0.1").build(); for (int i = 0; i < 10000; i++) { Session session = cluster.connect(); session.close(); } Thread.sleep(100000); cluster.close(); } } {noformat} Attach jvisualvm when this program reaches Thread.sleep call and do a heap-dump. There will be 10000 instances of SessionManager and >10000 instances of SocketChannelImpl. The program suffers connection problems during the run: {noformat} ERROR 13:40:53,510 [Control connection] Cannot connect to any host, scheduling retry ERROR 13:40:53,510 [Control connection] Cannot connect to any host, scheduling retry ERROR 13:40:53,520 [Control connection] Cannot connect to any host, scheduling retry ERROR 13:40:53,520 [Control connection] Cannot connect to any host, scheduling retry ERROR 13:40:54,521 [Control connection] Cannot connect to any host, scheduling retry in 2000 milliseconds ERROR 13:40:56,522 [Control connection] Cannot connect to any host, scheduling retry in 4000 milliseconds ERROR 13:41:00,522 [Control connection] Cannot connect to any host, scheduling retry in 8000 milliseconds ERROR 13:41:08,523 [Control connection] Cannot connect to any host, scheduling retry in 16000 milliseconds ERROR 13:41:24,523 [Control connection] Cannot connect to any host, scheduling retry in 32000 milliseconds ERROR 13:41:56,524 [Control connection] Cannot connect to any host, scheduling retry in 64000 milliseconds 10-Jul-2014 13:42:54 org.jboss.netty.channel.DefaultChannelPipeline WARNING: An exception was thrown by a user handler while handling an exception event ([id: 0x1e3e1609] EXCEPTION: java.net.BindException: Cannot assign requested address) java.util.concurrent.RejectedExecutionException at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1774) at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:768) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:656) at com.google.common.util.concurrent.MoreExecutors$ListeningDecorator.execute(MoreExecutors.java:484) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:78) at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:50) at com.datastax.driver.core.Cluster$Manager.triggerOnDown(Cluster.java:1342) at com.datastax.driver.core.Cluster$Manager.signalConnectionFailure(Cluster.java:1550) at com.datastax.driver.core.Connection.defunct(Connection.java:247) at com.datastax.driver.core.Connection$Dispatcher.exceptionCaught(Connection.java:612) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipelineSink.java:131) at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:70) at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54) at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54) at org.jboss.netty.channel.Channels.connect(Channels.java:634) at org.jboss.netty.channel.AbstractChannel.connect(AbstractChannel.java:207) at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:229) at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:182) at com.datastax.driver.core.Connection.<init>(Connection.java:93) at com.datastax.driver.core.PooledConnection.<init>(PooledConnection.java:28) at com.datastax.driver.core.Connection$Factory.open(Connection.java:456) at com.datastax.driver.core.HostConnectionPool.<init>(HostConnectionPool.java:85) at com.datastax.driver.core.SessionManager$2.call(SessionManager.java:190) at com.datastax.driver.core.SessionManager$2.call(SessionManager.java:186) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) 10-Jul-2014 13:42:54 org.jboss.netty.channel.DefaultChannelPipeline WARNING: An exception was thrown by a user handler while handling an exception event ([id: 0x0757b1d4] EXCEPTION: java.net.BindException: Cannot assign requested address) java.util.concurrent.RejectedExecutionException at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1774) at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:768) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:656) at com.google.common.util.concurrent.MoreExecutors$ListeningDecorator.execute(MoreExecutors.java:484) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:78) at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:50) at com.datastax.driver.core.Cluster$Manager.triggerOnDown(Cluster.java:1342) at com.datastax.driver.core.Cluster$Manager.signalConnectionFailure(Cluster.java:1550) at com.datastax.driver.core.Connection.defunct(Connection.java:247) at com.datastax.driver.core.Connection$Dispatcher.exceptionCaught(Connection.java:612) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipelineSink.java:131) at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:70) at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54) at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54) at org.jboss.netty.channel.Channels.connect(Channels.java:634) at org.jboss.netty.channel.AbstractChannel.connect(AbstractChannel.java:207) at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:229) at org.jboss.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:182) at com.datastax.driver.core.Connection.<init>(Connection.java:93) at com.datastax.driver.core.PooledConnection.<init>(PooledConnection.java:28) at com.datastax.driver.core.Connection$Factory.open(Connection.java:456) at com.datastax.driver.core.HostConnectionPool.<init>(HostConnectionPool.java:85) at com.datastax.driver.core.SessionManager$2.call(SessionManager.java:190) at com.datastax.driver.core.SessionManager$2.call(SessionManager.java:186) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) 10-Jul-2014 13:42:54 org.jboss.netty.channel.DefaultChannelPipeline WARNING: An exception was thrown by a user handler while handling an exception event ([id: 0x8787bc74, /127.0.0.1:50027 :> /127.0.0.1:9042] EXCEPTION: java.lang.NullPointerException) java.lang.NullPointerException at com.datastax.driver.core.HostConnectionPool.discardAvailableConnections(HostConnectionPool.java:402) at com.datastax.driver.core.HostConnectionPool.closeAsync(HostConnectionPool.java:389) at com.datastax.driver.core.PooledConnection.notifyOwnerWhenDefunct(PooledConnection.java:48) at com.datastax.driver.core.Connection.defunct(Connection.java:248) at com.datastax.driver.core.Connection$Dispatcher.exceptionCaught(Connection.java:612) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) at org.jboss.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:48) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.cleanup(FrameDecoder.java:493) at org.jboss.netty.handler.codec.frame.FrameDecoder.channelClosed(FrameDecoder.java:371) at org.jboss.netty.channel.Channels.fireChannelClosed(Channels.java:468) at org.jboss.netty.channel.Channels$6.run(Channels.java:457) at org.jboss.netty.channel.socket.ChannelRunnableWrapper.run(ChannelRunnableWrapper.java:40) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:372) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:296) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) 10-Jul-2014 13:42:54 org.jboss.netty.channel.DefaultChannelPipeline WARNING: An exception was thrown by a user handler while handling an exception event ([id: 0xdeb37992, /127.0.0.1:55446 :> /127.0.0.1:9042] EXCEPTION: java.lang.NullPointerException) java.lang.NullPointerException at com.datastax.driver.core.HostConnectionPool.discardAvailableConnections(HostConnectionPool.java:402) at com.datastax.driver.core.HostConnectionPool.closeAsync(HostConnectionPool.java:389) at com.datastax.driver.core.PooledConnection.notifyOwnerWhenDefunct(PooledConnection.java:48) at com.datastax.driver.core.Connection.defunct(Connection.java:248) at com.datastax.driver.core.Connection$Dispatcher.exceptionCaught(Connection.java:612) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) at org.jboss.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:48) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.cleanup(FrameDecoder.java:493) at org.jboss.netty.handler.codec.frame.FrameDecoder.channelClosed(FrameDecoder.java:371) at org.jboss.netty.channel.Channels.fireChannelClosed(Channels.java:468) at org.jboss.netty.channel.Channels$6.run(Channels.java:457) at org.jboss.netty.channel.socket.ChannelRunnableWrapper.run(ChannelRunnableWrapper.java:40) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:372) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:296) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) 10-Jul-2014 13:42:54 org.jboss.netty.channel.DefaultChannelPipeline WARNING: An exception was thrown by a user handler while handling an exception event ([id: 0x87e23fce, /127.0.0.1:38588 :> /127.0.0.1:9042] EXCEPTION: java.lang.NullPointerException) java.lang.NullPointerException at com.datastax.driver.core.HostConnectionPool.discardAvailableConnections(HostConnectionPool.java:402) at com.datastax.driver.core.HostConnectionPool.closeAsync(HostConnectionPool.java:389) at com.datastax.driver.core.PooledConnection.notifyOwnerWhenDefunct(PooledConnection.java:48) at com.datastax.driver.core.Connection.defunct(Connection.java:248) at com.datastax.driver.core.Connection$Dispatcher.exceptionCaught(Connection.java:612) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) at org.jboss.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:48) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.cleanup(FrameDecoder.java:493) at org.jboss.netty.handler.codec.frame.FrameDecoder.channelClosed(FrameDecoder.java:371) at org.jboss.netty.channel.Channels.fireChannelClosed(Channels.java:468) at org.jboss.netty.channel.Channels$6.run(Channels.java:457) at org.jboss.netty.channel.socket.ChannelRunnableWrapper.run(ChannelRunnableWrapper.java:40) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:372) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:296) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) 10-Jul-2014 13:42:54 org.jboss.netty.channel.DefaultChannelPipeline WARNING: An exception was thrown by a user handler while handling an exception event ([id: 0x14b239f4, /127.0.0.1:37010 :> /127.0.0.1:9042] EXCEPTION: java.lang.NullPointerException) java.lang.NullPointerException at com.datastax.driver.core.HostConnectionPool.discardAvailableConnections(HostConnectionPool.java:402) at com.datastax.driver.core.HostConnectionPool.closeAsync(HostConnectionPool.java:389) at com.datastax.driver.core.PooledConnection.notifyOwnerWhenDefunct(PooledConnection.java:48) at com.datastax.driver.core.Connection.defunct(Connection.java:248) at com.datastax.driver.core.Connection$Dispatcher.exceptionCaught(Connection.java:612) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377) at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) at org.jboss.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:48) at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:60) at org.jboss.netty.handler.codec.frame.FrameDecoder.cleanup(FrameDecoder.java:493) at org.jboss.netty.handler.codec.frame.FrameDecoder.channelClosed(FrameDecoder.java:371) at org.jboss.netty.channel.Channels.fireChannelClosed(Channels.java:468) at org.jboss.netty.channel.Channels$6.run(Channels.java:457) at org.jboss.netty.channel.socket.ChannelRunnableWrapper.run(ChannelRunnableWrapper.java:40) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:372) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:296) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) {noformat}
    via by Piotr Kołaczkowski,
    • java.util.concurrent.RejectedExecutionException: Task com.datastax.driver.core.Connection$9$1@4db33871 rejected from java.util.concurrent.ThreadPoolExecutor@1d55fe0[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0] at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)[rt.jar:1.8.0_45] at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)[rt.jar:1.8.0_45] at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)[rt.jar:1.8.0_45] at com.google.common.util.concurrent.MoreExecutors$ListeningDecorator.execute(MoreExecutors.java:484)[guava-16.0.1.jar:] at com.datastax.driver.core.Connection$9.operationComplete(Connection.java:566)[cassandra-driver-core-2.2.0-rc2.jar:] at com.datastax.driver.core.Connection$9.operationComplete(Connection.java:542)[cassandra-driver-core-2.2.0-rc2.jar:] at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)[netty-common-4.0.27.Final.jar:4.0.27.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)[netty-common-4.0.27.Final.jar:4.0.27.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)[netty-common-4.0.27.Final.jar:4.0.27.Final] at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:424)[netty-common-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.PendingWriteQueue.safeFail(PendingWriteQueue.java:252)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.PendingWriteQueue.removeAndFailAll(PendingWriteQueue.java:112)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.handler.ssl.SslHandler.setHandshakeFailure(SslHandler.java:1256)[netty-handler-4.0.27.Final.jar:4.0.27.Final] at io.netty.handler.ssl.SslHandler.channelInactive(SslHandler.java:676)[netty-handler-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:237)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:223)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:829)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:610)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)[netty-common-4.0.27.Final.jar:4.0.27.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)[netty-transport-4.0.27.Final.jar:4.0.27.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)[netty-common-4.0.27.Final.jar:4.0.27.Final] at java.lang.Thread.run(Thread.java:745)[rt.jar:1.8.0_45]

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