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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ZOOKEEPER-1237) ERRORs being logged when queued responses are sent after socket has closed.
Date Tue, 21 Jun 2016 22:19:59 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-1237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Nauroth updated ZOOKEEPER-1237:
-------------------------------------
    Fix Version/s:     (was: 3.5.2)
                   3.5.3

> ERRORs being logged when queued responses are sent after socket has closed.
> ---------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1237
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1237
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.3.4, 3.4.0, 3.5.0
>            Reporter: Patrick Hunt
>             Fix For: 3.6.0, 3.5.3
>
>         Attachments: zookeeper-3.4.5-ZK1237.patch
>
>
> After applying ZOOKEEPER-1049 to 3.3.3 (I believe the same problem exists in 3.4/3.5
but haven't tested this) I'm seeing the following exception more frequently:
> {noformat}
> Oct 19, 1:31:53 PM ERROR
> Unexpected Exception:
> java.nio.channels.CancelledKeyException
> at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:55)
> at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:59)
> at org.apache.zookeeper.server.NIOServerCnxn.sendBuffer(NIOServerCnxn.java:418)
> at org.apache.zookeeper.server.NIOServerCnxn.sendResponse(NIOServerCnxn.java:1509)
> at org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:367)
> at org.apache.zookeeper.server.quorum.CommitProcessor.run(CommitProcessor.java:73)
> {noformat}
> This is a long standing problem where we try to send a response after the socket has
been closed. Prior to ZOOKEEPER-1049 this issues happened much less frequently (2 sec linger),
but I believe it was possible. The timing window is just wider now.



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