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From "Lev Agafonov (Jira)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-12032) Server node prints exception when ODBC driver disconnects
Date Wed, 25 Sep 2019 12:38:00 GMT

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

Lev Agafonov updated IGNITE-12032:
----------------------------------
    Issue Type: Improvement  (was: Bug)

> Server node prints exception when ODBC driver disconnects
> ---------------------------------------------------------
>
>                 Key: IGNITE-12032
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12032
>             Project: Ignite
>          Issue Type: Improvement
>          Components: thin client
>    Affects Versions: 2.7.5
>            Reporter: Evgenii Zhuravlev
>            Assignee: Lev Agafonov
>            Priority: Minor
>              Labels: newbie, usability
>             Fix For: 2.8
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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