Hello, There is an open ticket https://issues.apache.org/jira/browse/IGNITE-12032 with more details. In general, It’s ok to ignore this error. You could try to follow Lev’s recommendations with explicit connection closing.
From: Matan Levy Sent: Thursday, August 1, 2019 9:33 AM To: user@ignite.apache.org Subject: exceptions in Ignite node when a thin client process ends Hi, In my application I am using ODBC + Java thin clients to get data from the cache(stores in Ignite nodes). whenever a process using this thin clients is finished, I am getting in the node logs this exception : *[07:45:19,559][SEVERE][grid-nio-worker-client-listener-1-#30][ClientListenerProcessor] Failed to process selector key [s es=GridSelectorNioSessionImpl [worker=ByteBufferNioClientWorker [readBuf=java.nio.HeapByteBuffer[pos=0 lim=8192 cap=8192 ], super=AbstractNioClientWorker [idx=1, bytesRcvd=0, bytesSent=0, bytesRcvd0=0, bytesSent0=0, select=true, super=GridWo rker [name=grid-nio-worker-client-listener-1, igniteInstanceName=null, finished=false, heartbeatTs=1564289118230, hashCo de=1829856117, interrupted=false, runner=grid-nio-worker-client-listener-1-#30]]], writeBuf=null, readBuf=null, inRecove ry=null, outRecovery=null, super=GridNioSessionImpl [locAddr=/0:0:0:0:0:0:0:1:10800, rmtAddr=/0:0:0:0:0:0:0:1:63697, cre ateTime=1564289116225, closeTime=0, bytesSent=1346, bytesRcvd=588, bytesSent0=0, bytesRcvd0=0, sndSchedTime=156428911623 5, lastSndTime=1564289116235, lastRcvTime=1564289116235, readsPaused=false, filterChain=FilterChain[filters=[GridNioAsyn cNotifyFilter, GridNioCodecFilter [parser=ClientListenerBufferedParser, directMode=false]], accepted=true, markedForClos e=false]]] 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(SocketDispatcher.java:43) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at sun.nio.ch.IOUtil.read(IOUtil.java:197) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) at org.apache.ignite.internal.util.nio.GridNioServer$ByteBufferNioClientWorker.processRead(GridNioServer.java:11 04) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNi oServer.java:2389) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:215 6) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1797) at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120) at java.lang.Thread.run(Thread.java:748)* is there a soemthing I can do to avoid those exceptions? Thanks!
