Hello, If I destroy a cache when a node singleton service is deployed, a NullPointerException is logged. The cache destroying process still terminates successfully though. So it does not seems harmful, but it pollutes the logs and I wonder if it's really harmless.
This happens in 2.8.0 and 2.8.1, but not in 2.7.5. You can find attached a simple example reproducing this. Main.java <http://apache-ignite-users.70518.x6.nabble.com/file/t2439/Main.java> The error message is the following: Sep 01, 2020 10:46:35 AM org.apache.ignite.logger.java.JavaLogger error SEVERE: Failed to notify direct custom event listener: DynamicCacheChangeBatch [id=33788d84471-920edd0a-25b5-4d6d-9684-33f0524e9e0d, reqs=ArrayList [DynamicCacheChangeRequest [cacheName=foo, hasCfg=false, nodeId=d9234a21-9fa5-48b3-904b-d84a9cee9d25, clientStartOnly=false, stop=true, destroy=false, disabledAfterStartfalse]], exchangeActions=ExchangeActions [startCaches=null, stopCaches=[foo], startGrps=[], stopGrps=[foo, destroy=true], resetParts=null, stateChangeRequest=null], startCaches=false] java.lang.NullPointerException at org.apache.ignite.internal.processors.service.IgniteServiceProcessor.lambda$processDynamicCacheChangeRequest$6(IgniteServiceProcessor.java:1694) at java.util.Collection.removeIf(Collection.java:414) at org.apache.ignite.internal.processors.service.IgniteServiceProcessor.processDynamicCacheChangeRequest(IgniteServiceProcessor.java:1691) at org.apache.ignite.internal.processors.service.IgniteServiceProcessor.access$200(IgniteServiceProcessor.java:108) at org.apache.ignite.internal.processors.service.IgniteServiceProcessor$3.onCustomEvent(IgniteServiceProcessor.java:232) at org.apache.ignite.internal.processors.service.IgniteServiceProcessor$3.onCustomEvent(IgniteServiceProcessor.java:229) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:665) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.lambda$onDiscovery$0(GridDiscoveryManager.java:528) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body0(GridDiscoveryManager.java:2625) at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body(GridDiscoveryManager.java:2663) at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120) at java.lang.Thread.run(Thread.java:748) -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
