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From "Karl Wright (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CONNECTORS-1036) Agents shutdown can cause Zookeeper error
Date Wed, 17 Sep 2014 18:26:34 GMT

    [ https://issues.apache.org/jira/browse/CONNECTORS-1036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137697#comment-14137697
] 

Karl Wright commented on CONNECTORS-1036:
-----------------------------------------

Ok, after fixing that, now when webapps is shut down, I get these:

{code}
Exception in thread "Shutdown thread" java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:926)
        at java.util.HashMap$KeyIterator.next(HashMap.java:960)
        at org.apache.manifoldcf.core.lockmanager.ZooKeeperEphemeralNodePool.deleteAll(ZooKeeperEphemeralNodePool.java:65)
        at org.apache.manifoldcf.core.lockmanager.ZooKeeperLockManager.shutdownPool(ZooKeeperLockManager.java:925)
        at org.apache.manifoldcf.core.lockmanager.ZooKeeperLockManager$ZooKeeperShutdown.doCleanup(ZooKeeperLockManager.java:964)
        at org.apache.manifoldcf.core.system.ManifoldCF.cleanUpEnvironment(ManifoldCF.java:1295)
        at org.apache.manifoldcf.core.system.ManifoldCF$ShutdownThread.run(ManifoldCF.java:1483)
{code}

and...

{code}
java.lang.IllegalStateException: Can't clean up a node that hasn't been created
for '/org.apache.manifoldcf.serviceactive-_OUTPUTCONNECTORPOOL_null-_ANON_4'
        at org.apache.manifoldcf.core.lockmanager.ZooKeeperEphemeralNodeObject.deleteNode(ZooKeeperEphemeralNodeObject.java:84)
        at org.apache.manifoldcf.core.lockmanager.ZooKeeperEphemeralNodePool.deleteNode(ZooKeeperEphemeralNodePool.java:55)
        at org.apache.manifoldcf.core.lockmanager.ZooKeeperLockManager.endServiceActivity(ZooKeeperLockManager.java:487)
        at org.apache.manifoldcf.core.connectorpool.ConnectorPool$Pool.releaseAll(ConnectorPool.java:735)
        at org.apache.manifoldcf.core.connectorpool.ConnectorPool.closeAllConnectors(ConnectorPool.java:381)
        at org.apache.manifoldcf.agents.outputconnectorpool.OutputConnectorPool.closeAllConnectors(OutputConnectorPool.java:141)
        at org.apache.manifoldcf.agents.system.ManifoldCF.localCleanup(ManifoldCF.java:80)
        at org.apache.manifoldcf.agents.system.ManifoldCF.cleanUpEnvironment(ManifoldCF.java:55)
        at org.apache.manifoldcf.crawler.system.ManifoldCF.cleanUpEnvironment(ManifoldCF.java:87)
        at org.apache.manifoldcf.crawlerui.ServletListener.contextDestroyed(ServletListener.java:64)
        at org.eclipse.jetty.server.handler.ContextHandler.doStop(ContextHandler.java:682)
        at org.eclipse.jetty.servlet.ServletContextHandler.doStop(ServletContextHandler.java:144)
        at org.eclipse.jetty.webapp.WebAppContext.doStop(WebAppContext.java:478)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:84)
        at org.eclipse.jetty.server.handler.HandlerCollection.doStop(HandlerCollection.java:245)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:84)
        at org.eclipse.jetty.server.handler.HandlerWrapper.doStop(HandlerWrapper.java:101)
        at org.eclipse.jetty.server.Server.doStop(Server.java:322)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:84)
        at org.eclipse.jetty.util.thread.ShutdownThread.run(ShutdownThread.java:124)
{code}


> Agents shutdown can cause Zookeeper error
> -----------------------------------------
>
>                 Key: CONNECTORS-1036
>                 URL: https://issues.apache.org/jira/browse/CONNECTORS-1036
>             Project: ManifoldCF
>          Issue Type: Bug
>          Components: Framework core
>    Affects Versions: Manifold 1.7.1, ManifoldCF 2.0
>            Reporter: Karl Wright
>            Assignee: Karl Wright
>             Fix For: Manifold 1.7.1, ManifoldCF 2.0
>
>
> Here's the exception:
> {code}
> WARN 2014-09-17 14:06:52,228 (Shutdown thread) - Exception tossed on repository connector
pool cleanup: KeeperErrorCode = NoNode for /org.apache.manifoldcf.serviceactive-_REPOSITORYCONNECTORPOOL_Web-_ANON_5
> org.apache.manifoldcf.core.interfaces.ManifoldCFException: KeeperErrorCode = NoNode for
/org.apache.manifoldcf.serviceactive-_REPOSITORYCONNECTORPOOL_Web-_ANON_5
>         at org.apache.manifoldcf.core.lockmanager.ZooKeeperConnection.handleKeeperException(ZooKeeperConnection.java:941)
>         at org.apache.manifoldcf.core.lockmanager.ZooKeeperConnection.deleteNode(ZooKeeperConnection.java:155)
>         at org.apache.manifoldcf.core.lockmanager.ZooKeeperLockManager.endServiceActivity(ZooKeeperLockManager.java:478)
>         at org.apache.manifoldcf.core.connectorpool.ConnectorPool$Pool.releaseAll(ConnectorPool.java:735)
>         at org.apache.manifoldcf.core.connectorpool.ConnectorPool.closeAllConnectors(ConnectorPool.java:381)
>         at org.apache.manifoldcf.crawler.repositoryconnectorpool.RepositoryConnectorPool.closeAllConnectors(RepositoryConnectorPool.java:144)
>         at org.apache.manifoldcf.crawler.system.ManifoldCF.localCleanup(ManifoldCF.java:110)
>         at org.apache.manifoldcf.crawler.system.CrawlerAgent.cleanUp(CrawlerAgent.java:105)
>         at org.apache.manifoldcf.agents.system.AgentsDaemon.stopAgents(AgentsDaemon.java:171)
>         at org.apache.manifoldcf.agents.system.AgentsDaemon$AgentsShutdownHook.doCleanup(AgentsDaemon.java:386)
>         at org.apache.manifoldcf.core.system.ManifoldCF.cleanUpEnvironment(ManifoldCF.java:1295)
>         at org.apache.manifoldcf.core.system.ManifoldCF$ShutdownThread.run(ManifoldCF.java:1483)
> Caused by: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
for /org.apache.manifoldcf.serviceactive-_REPOSITORYCONNECTORPOOL_Web-_ANON_5
>         at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
>         at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>         at org.apache.zookeeper.ZooKeeper.delete(ZooKeeper.java:873)
>         at org.apache.manifoldcf.core.lockmanager.ZooKeeperConnection.deleteNode(ZooKeeperConnection.java:150)
>         ... 10 more
> {code}



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