[jira] [Created] (IGNITE-13156) Continuous query filter deployment hungs discovery thread

["Ivan Bessonov (Jira)" <ji...@apache.org>]

Ivan Bessonov created IGNITE-13156:
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             Summary: Continuous query filter deployment hungs discovery thread
                 Key: IGNITE-13156
                 URL: https://issues.apache.org/jira/browse/IGNITE-13156
             Project: Ignite
          Issue Type: Bug
            Reporter: Ivan Bessonov


Continuous query starts with a custom discovery event. Handler of the event is executed in discovery thread synchronously. Even worse is the fact that message itself is mutable and it blocks the ring.

Inside of the handler there is a is p2p resource request from other node, which can be pretty time consuming. And after https://issues.apache.org/jira/browse/IGNITE-12438 or similar tasks this could even lead to a deadlock.

All IO operations must be removed from discovery handlers.
{code:java}
 at org.apache.ignite.internal.managers.communication.GridIoManager.send(GridIoManager.java:2099) at org.apache.ignite.internal.managers.communication.GridIoManager.send(GridIoManager.java:2099) at org.apache.ignite.internal.managers.communication.GridIoManager.sendToGridTopic(GridIoManager.java:2231) at org.apache.ignite.internal.managers.deployment.GridDeploymentCommunication.sendResourceRequest(GridDeploymentCommunication.java:456) at org.apache.ignite.internal.managers.deployment.GridDeploymentClassLoader.sendResourceRequest(GridDeploymentClassLoader.java:793) at org.apache.ignite.internal.managers.deployment.GridDeploymentClassLoader.getResourceAsStreamEx(GridDeploymentClassLoader.java:745) at org.apache.ignite.internal.managers.deployment.GridDeploymentPerVersionStore.checkLoadRemoteClass(GridDeploymentPerVersionStore.java:729) at org.apache.ignite.internal.managers.deployment.GridDeploymentPerVersionStore.getDeployment(GridDeploymentPerVersionStore.java:314) at org.apache.ignite.internal.managers.deployment.GridDeploymentManager.getGlobalDeployment(GridDeploymentManager.java:498) at org.apache.ignite.internal.GridEventConsumeHandler.p2pUnmarshal(GridEventConsumeHandler.java:416) at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor.processStartRequest(GridContinuousProcessor.java:1423) at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor.access$400(GridContinuousProcessor.java:117) at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor$2.onCustomEvent(GridContinuousProcessor.java:220) at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor$2.onCustomEvent(GridContinuousProcessor.java:211) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:670) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.lambda$onDiscovery$0(GridDiscoveryManager.java:533) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body0(GridDiscoveryManager.java:2635) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body(GridDiscoveryManager.java:2673) at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120) at java.lang.Thread.run(Thread.java:748)
{code}



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