Now, I am just running only one server. In that only I am facing this error
2018-05-10 16:42:31 INFO TcpDiscoverySpi:475 - Started serving remote node
connection [rmtAddr=/168.63.129.16:64338, rmtPort=64338]
2018-05-10 16:42:32 ERROR TcpCommunicationSpi:495 - Failed to process
selector key [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker
[super=AbstractNioClientWorker [idx=2, bytesRcvd=0, bytesSent=18,
bytesRcvd0=0, bytesSent0=0, select=true, super=GridWorker
[name=grid-nio-worker-tcp-comm-2, igniteInstanceName=null, finished=false,
hashCode=1553446030, interrupted=false,
runner=grid-nio-worker-tcp-comm-2-#27]]],
writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768],
readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768],
inRecovery=null, outRecovery=null, super=GridNioSessionImpl
[locAddr=/10.0.0.4:47100, rmtAddr=/168.63.129.16:64269,
createTime=1525970546385, closeTime=0, bytesSent=18, bytesRcvd=0,
bytesSent0=0, bytesRcvd0=0, sndSchedTime=1525970546385,
lastSndTime=1525970550273, lastRcvTime=1525970546385, readsPaused=false,
filterChain=FilterChain[filters=[GridNioCodecFilter
[parser=o.a.i.i.util.nio.GridDirectParser@5b163d52, directMode=true],
GridConnectionBytesVerifyFilter], accepted=true]]]
java.io.IOException: An existing connection was forcibly closed by the
remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at
org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processRead(GridNioServer.java:1233)
at
org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNioServer.java:2272)
at
org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2048)
at
org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1717)
at
org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
at java.lang.Thread.run(Unknown Source)
2018-05-10 16:42:32 WARN TcpCommunicationSpi:480 - Closing NIO session
because of unhandled exception [cls=class o.a.i.i.util.nio.GridNioException,
msg=An existing connection was forcibly closed by the remote ho
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