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From "Colin Morelli (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CURATOR-39) ServiceProvider thread is not closed during ServiceDiscovery close
Date Mon, 24 Jun 2013 11:50:20 GMT
Colin Morelli created CURATOR-39:
------------------------------------

             Summary: ServiceProvider thread is not closed during ServiceDiscovery close
                 Key: CURATOR-39
                 URL: https://issues.apache.org/jira/browse/CURATOR-39
             Project: Apache Curator
          Issue Type: Bug
            Reporter: Colin Morelli
            Assignee: Jordan Zimmerman


This may simple be an issue on my end, but I believe it to be an issue in Curator. I'm using
2.0.1-incubating, using the following to build a ServiceProvider:

serviceProvider = serviceDiscovery.serviceProviderBuilder()
                    .serviceName(name)
                    .providerStrategy(new RoundRobinStrategy<DiscoverableService>())
                    .build();
serviceProvider.start();

I have a name => ServiceProvider map that stores all my service providers. During shutdown,
I call:

        for (ServiceProvider serviceProvider : serviceProviderMap.values()) {
            serviceProvider.close();
        }

        serviceDiscovery.close();

Which is redundant, it seems, because serviceDiscovery itself appears to shutdown the providers.
However, I still end up with a dangling "ServiceProvider-0" thread that keeps Tomcat open.

If I start the container up, without making a service call (so I don't allocate any ServiceProviders),
Tomcat shuts down cleanly. As soon as a ServiceProvider is allocated (by making a service
call) Tomcat hangs during shutdown, and informs me of the remaining thread. I will try to
provide more information as it becomes available to me.

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