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https://issues.apache.org/jira/browse/CONNECTORS-1036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137967#comment-14137967
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Karl Wright commented on CONNECTORS-1036:
-----------------------------------------
I was able to fix the former exception, but the latter one is more subtle. It
appears two things are happening:
- The repositoryconnectorpool is being closed twice, but the stack traces for
when this is getting closed are identical. Which argues that there are TWO
shutdown threads active, both doing the same thing.
- Even before the second attempt to close the pool, we're finding ephemeral
nodes missing that really should be there
This only happens when shutting down webapps.
> 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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