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From "Evgenii Zhuravlev (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-12032) Server node prints exception when ODBC driver disconnects
Date Thu, 01 Aug 2019 11:56:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-12032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Evgenii Zhuravlev updated IGNITE-12032:
---------------------------------------
    Labels: newbie usability  (was: usability)

> 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
>            Priority: Major
>              Labels: newbie, usability
>
> 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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