Evgenii Zhuravlev created IGNITE-12032:
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Summary: Server node prints exception when ODBC driver disconnects
Key: IGNITE-12032
URL:
https://issues.apache.org/jira/browse/IGNITE-12032 Project: Ignite
Issue Type: Bug
Components: odbc
Affects Versions: 2.7.5
Reporter: Evgenii Zhuravlev
Whenever a process using ODBC clients is finished, it's printing in the
node logs this exception:
{code:java}
*[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)*
{code}
It's absolutely normal behavior when ODBC client disconnects from the node, so, we shouldn't print exception in the log. We should replace it with something like INFO message about ODBC client disconnection.
Thread from user list:
http://apache-ignite-users.70518.x6.nabble.com/exceptions-in-Ignite-node-when-a-thin-client-process-ends-td28970.html--
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