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ConcurrentModificationException: null while closing a context #1349

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yuri-sergiichuk opened this issue Jan 5, 2021 · 1 comment
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ConcurrentModificationException: null while closing a context #1349

yuri-sergiichuk opened this issue Jan 5, 2021 · 1 comment
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@armiol
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@yuri-sergiichuk
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yuri-sergiichuk commented Jan 5, 2021 •
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In one of our products we've seen a ConcurrentModificationException being thrown from inside of the ThirdPartyContext#close routine with the following stacktrace:

java.util.ConcurrentModificationException: null
at io.spine.server.integration.ConfigurationChangeObserver.findStale (ConfigurationChangeObserver.java:149)
at io.spine.server.integration.ConfigurationChangeObserver.clearStaleSubscriptions (ConfigurationChangeObserver.java:125)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:95)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.IntegrationBroker.notifyOthers (IntegrationBroker.java:265)
at io.spine.server.integration.ConfigurationChangeObserver.handle (ConfigurationChangeObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:98)
at io.spine.server.integration.AbstractChannelObserver.onNext (AbstractChannelObserver.java:46)
at io.spine.server.transport.Subscriber.callObservers (Subscriber.java:103)
at io.spine.server.transport.Subscriber.onMessage (Subscriber.java:98)
at io.spine.server.transport.memory.InMemoryPublisher.publish (InMemoryPublisher.java:61)
at io.spine.server.integration.ConfigurationBroadcast.send (ConfigurationBroadcast.java:79)
at io.spine.server.integration.ConfigurationBroadcast.onTypesChanged (ConfigurationBroadcast.java:66)
at io.spine.server.integration.IntegrationBroker.notifyTypesChanged (IntegrationBroker.java:254)
at io.spine.server.integration.IntegrationBroker.close (IntegrationBroker.java:274)
at io.spine.server.BoundedContext.close (BoundedContext.java:424)
at io.spine.server.DomainContext.close (DomainContext.java:85)
at io.spine.server.integration.ThirdPartyContext.close (ThirdPartyContext.java:186)

It looks like we're missing some synchronization.
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