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https://issues.apache.org/jira/browse/ZOOKEEPER-1237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14041345#comment-14041345
]
Clark Haskins commented on ZOOKEEPER-1237:
------------------------------------------
2014-06-23 19:43:20,227 - ERROR [CommitProcessor:3:NIOServerCnxn@445] -
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.NIOServerCnxn.process(NIOServerCnxn.java:1545)
at
org.apache.zookeeper.server.WatchManager.triggerWatch(WatchManager.java:115)
at
org.apache.zookeeper.server.WatchManager.triggerWatch(WatchManager.java:87)
at org.apache.zookeeper.server.DataTree.deleteNode(DataTree.java:577)
at org.apache.zookeeper.server.DataTree.killSession(DataTree.java:829)
at org.apache.zookeeper.server.DataTree.processTxn(DataTree.java:804)
at
org.apache.zookeeper.server.ZKDatabase.processTxn(ZKDatabase.java:328)
at
org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:103)
at
org.apache.zookeeper.server.quorum.CommitProcessor.run(CommitProcessor.java:73)
2014-06-23 19:43:20,227 - ERROR [CommitProcessor:3:NIOServerCnxn@445] -
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.NIOServerCnxn.process(NIOServerCnxn.java:1545)
at
org.apache.zookeeper.server.WatchManager.triggerWatch(WatchManager.java:115)
at
org.apache.zookeeper.server.WatchManager.triggerWatch(WatchManager.java:87)
at org.apache.zookeeper.server.DataTree.deleteNode(DataTree.java:577)
at org.apache.zookeeper.server.DataTree.killSession(DataTree.java:829)
at org.apache.zookeeper.server.DataTree.processTxn(DataTree.java:804)
at
org.apache.zookeeper.server.ZKDatabase.processTxn(ZKDatabase.java:328)
at
org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:103)
at
org.apache.zookeeper.server.quorum.CommitProcessor.run(CommitProcessor.java:73)
> 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: 3.5.0
>
> 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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