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https://issues.apache.org/jira/browse/CONNECTORS-1031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14135342#comment-14135342
]
Karl Wright commented on CONNECTORS-1031:
-----------------------------------------
I was able to cause zookeeper to hang after some 100000 documents with the
following error trace in the zookeeper logs:
{code}
[SyncThread:0] ERROR org.apache.zookeeper.server.NIOServerCnxn - Unexpected
Exception:
java.nio.channels.CancelledKeyException
at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:77)
at
org.apache.zookeeper.server.NIOServerCnxn.sendBuffer(NIOServerCnxn.java:153)
at
org.apache.zookeeper.server.NIOServerCnxn.sendResponse(NIOServerCnxn.java:1076)
at
org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:170)
at
org.apache.zookeeper.server.SyncRequestProcessor.flush(SyncRequestProcessor.java:167)
at
org.apache.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:101)
[SyncThread:0] ERROR org.apache.zookeeper.server.NIOServerCnxn - Unexpected
Exception:
java.nio.channels.CancelledKeyException
at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:77)
at
org.apache.zookeeper.server.NIOServerCnxn.sendBuffer(NIOServerCnxn.java:153)
at
org.apache.zookeeper.server.NIOServerCnxn.sendResponse(NIOServerCnxn.java:1076)
at
org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:170)
at
org.apache.zookeeper.server.SyncRequestProcessor.flush(SyncRequestProcessor.java:167)
at
org.apache.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:101)
{code}
I have no idea what this means, but when the Zookeeper server gets this,
everything falls apart and the entire system hangs.
> Update zookeeper parameters so that example server is stable for the long term
> ------------------------------------------------------------------------------
>
> Key: CONNECTORS-1031
> URL: https://issues.apache.org/jira/browse/CONNECTORS-1031
> Project: ManifoldCF
> Issue Type: Bug
> Components: Framework core
> Affects Versions: ManifoldCF 1.7
> Reporter: Karl Wright
> Assignee: Karl Wright
> Fix For: ManifoldCF 2.0
>
>
> The zookeeper parameters we deliver are missing apparently important limits
> on growth:
> autopurge.snapRetainCount=3 : default value
> autopurge.purgeInterval=1: default value
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