Donot think so. As below the remote ip 10.254.13.83 is the another server node. --- log Accepted incoming communication connection [locAddr=/10.254.32.162:47100, rmtAddr=/10.254.13.83:35160]
super=GridNioSessionImpl [locAddr=/10.254.32.162:52542, rmtAddr=/10.254.13.83:47100 --- so the multiple connections kept being rejected were between two server nodes. Any scenarios could cause that ? it appears to be that the original connection was shutdown or interrupted fast by one node but the other node was not aware of the connection close event, or was not informed ? Any configuration can help on that ? Thanks, -MJ Original Email From:"Pavel Tupitsyn"< ptupit...@apache.org >; Sent Time:2024/9/16 12:58 To:"user"< user@ignite.apache.org >; Subject:Re: rejecting communication connection & Failed to process selector key Looks like some non-Ignite application connects to the Ignite server, then sends unexpected data or disconnects quickly. Could it be some kind of a security tool, port scanner, or a misconfigured service somewhere on the network? On Mon, Sep 16, 2024 at 3:59 AM MJ <6733...@qq.com> wrote: Hi Igniters, I am experiencing the “Failed to process selector key” error once every one or two days. Every time it appears received and rejected multiple communication connections and then threw the exception. Below logging is about “Broken pipe” original exception but not only “Broken pipe”, occasionally the “Failed to process selector key” wraps “Connection Reset”, “javax.net.ssl.SSLException: Failed to encrypt data (SSL engine error) [status=CLOSED, handshakeStatus=NOT_HANDSHAKING”. Is there any solution to fix it ? or its configuration can be improved ? Ignite 2.16.0 / 4 data nodes, running in openshift 4 ---- config of communicationSpi <property name="communicationSpi"> <bean class="org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi"> <!-- <property name="localPort" value="48100" /> --> <property name="messageQueueLimit" value="1024"/> <property name="socketWriteTimeout" value="25000"/> <property name="idleConnectionTimeout" value="60000"/> </bean> </property> 24-09-15 17:18:35.146 [INFO ] grid-nio-worker-tcp-comm-2-#25%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:117 - Accepted incoming communication connection [locAddr=/10.254.32.162:47100, rmtAddr=/10.254.13.83:35160] 24-09-15 17:18:35.147 [INFO ] grid-nio-worker-tcp-comm-2-#25%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:117 - Received incoming connection when already connected to this node, rejecting [locNode=52437bc3-3dfe-4f76-bec6-d2f22f8a5d40, rmtNode=7c28b6bc-8991-47a2-b69c-6adba0482713] 24-09-15 17:18:35.357 [INFO ] grid-nio-worker-tcp-comm-3-#26%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:117 - Accepted incoming communication connection [locAddr=/10.254.32.162:47100, rmtAddr=/10.254.13.83:35162] 24-09-15 17:18:35.358 [INFO ] grid-nio-worker-tcp-comm-3-#26%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:117 - Received incoming connection when already connected to this node, rejecting [locNode=52437bc3-3dfe-4f76-bec6-d2f22f8a5d40, rmtNode=7c28b6bc-8991-47a2-b69c-6adba0482713] 24-09-15 17:18:35.568 [INFO ] grid-nio-worker-tcp-comm-0-#23%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:117 - Accepted incoming communication connection [locAddr=/10.254.32.162:47100, rmtAddr=/10.254.13.83:35164] 24-09-15 17:18:35.569 [INFO ] grid-nio-worker-tcp-comm-0-#23%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:117 - Received incoming connection when already connected to this node, rejecting [locNode=52437bc3-3dfe-4f76-bec6-d2f22f8a5d40, rmtNode=7c28b6bc-8991-47a2-b69c-6adba0482713] 24-09-15 17:18:35.975 [ERROR] grid-nio-worker-tcp-comm-1-#24%TcpCommunicationSpi% o.a.i.s.c.t.TcpCommunicationSpi:137 - Failed to process selector key [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker [super=AbstractNioClientWorker [idx=1, bytesRcvd=29406013584, bytesSent=0, bytesRcvd0=0, bytesSent0=0, select=true, super=GridWorker [name=grid-nio-worker-tcp-comm-1, igniteInstanceName=TcpCommunicationSpi, finished=false, heartbeatTs=1726435114873, hashCode=1144648384, interrupted=false, runner=grid-nio-worker-tcp-comm-1-#24%TcpCommunicationSpi%]]], writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], inRecovery=GridNioRecoveryDescriptor [acked=20129536, resendCnt=0, rcvCnt=19533551, sentCnt=20129879, reserved=true, lastAck=19533551, nodeLeft=false, node=TcpDiscoveryNode [id=7c28b6bc-8991-47a2-b69c-6adba0482713, consistentId=10.254.13.83,127.0.0.1:47500, addrs=ArrayList [10.254.13.83, 127.0.0.1], sockAddrs=HashSet [/10.254.13.83:47500, /127.0.0.1:47500], discPort=47500, order=3, intOrder=3, lastExchangeTime=1724822271382, loc=false, ver=2.16.0#20231215-sha1:7bde6a42, isClient=false], connected=false, connectCnt=205, queueLimit=131072, reserveCnt=260, pairedConnections=false], outRecovery=GridNioRecoveryDescriptor [acked=20129536, resendCnt=0, rcvCnt=19533551, sentCnt=20129879, reserved=true, lastAck=19533551, nodeLeft=false, node=TcpDiscoveryNode [id=7c28b6bc-8991-47a2-b69c-6adba0482713, consistentId=10.254.13.83,127.0.0.1:47500, addrs=ArrayList [10.254.13.83, 127.0.0.1], sockAddrs=HashSet [/10.254.13.83:47500, /127.0.0.1:47500], discPort=47500, order=3, intOrder=3, lastExchangeTime=1724822271382, loc=false, ver=2.16.0#20231215-sha1:7bde6a42, isClient=false], connected=false, connectCnt=205, queueLimit=131072, reserveCnt=260, pairedConnections=false], closeSocket=true, outboundMessagesQueueSizeMetric=o.a.i.i.processors.metric.impl.LongAdderMetric@69a257d1, super=GridNioSessionImpl [locAddr=/10.254.32.162:52542, rmtAddr=/10.254.13.83:47100, createTime=1726435114863, closeTime=0, bytesSent=164200, bytesRcvd=468, bytesSent0=0, bytesRcvd0=0, sndSchedTime=1726435114863, lastSndTime=1726435114972, lastRcvTime=1726435114972, readsPaused=false, filterChain=FilterChain[filters=[GridNioCodecFilter [parser=o.a.i.i.util.nio.GridDirectParser@5196c6f7, directMode=true], GridConnectionBytesVerifyFilter, SSL filter], accepted=false, markedForClose=true]]] java.io.IOException: Broken pipe at java.base/sun.nio.ch.FileDispatcherImpl.write0(Native Method) ~[?:?] at java.base/sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:62) ~[?:?] at java.base/sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:132) ~[?:?] at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:76) ~[?:?] at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:53) ~[?:?] at java.base/sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:532) ~[?:?] at org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processWriteSsl(GridNioServer.java:1524) ~[ignite-core-2.16.0.jar:2.16.0] at org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processWrite(GridNioServer.java:1405) ~[ignite-core-2.16.0.jar:2.16.0] at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNioServer.java:2530) [ignite-core-2.16.0.jar:2.16.0] at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2282) [ignite-core-2.16.0.jar:2.16.0] at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1911) [ignite-core-2.16.0.jar:2.16.0] at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:125) [ignite-core-2.16.0.jar:2.16.0] at java.base/java.lang.Thread.run(Thread.java:842) [?:?] Thanks, -MJ