alex401401 opened a new issue, #11506:
URL: https://github.com/apache/ignite/issues/11506
There is a cluster of 3 nodes. 1 server and 2 client nodes. The server is
started with ignite.bat without parameters. The 2 client nodes are running as
part of my dotnet applications. One (N1) runs ignite services and the other
(N2) is a console application to control the services in the cluster. I.e. for
starting, stopping and controlling the services.
When on N2 I give a command to start a service -
services.DeployNodeSingleton("TestService", TestServiceImpl), everything is
fine - the service is started on N1 and works. But when I give a command to
stop the service - services.Cancel("TestService"), an exception occurs on the
server and it crashes. At the same time TestService is successfully stopped on
N1.
Error occurring on the server:
[12:42:31,848][SEVERE][services-deployment-worker-#74%main-grid%][ServiceDeploymentTask]
Error occurred while initializing deployment task, err=Cannot invoke
"org.apache.ignite.internal.processors.service.ServiceInfo.name()" because
"rmv" is null
java.lang.NullPointerException: Cannot invoke
"org.apache.ignite.internal.processors.service.ServiceInfo.name()" because
"rmv" is null
at
org.apache.ignite.internal.processors.service.IgniteServiceProcessor.lambda$updateDeployedServices$4(IgniteServiceProcessor.java:1599)
at java.base/java.util.HashMap.forEach(HashMap.java:1421)
at
java.base/java.util.Collections$UnmodifiableMap.forEach(Collections.java:1553)
at
org.apache.ignite.internal.processors.service.IgniteServiceProcessor.updateDeployedServices(IgniteServiceProcessor.java:1594)
...
I looked at the source code for the void updateDeployedServices(final
ServiceDeploymentActions depActions) method in the
modules/core/src/main/java/org/apache/ignite/internal/processors/service/IgniteServiceProcessor.java
file. In the ServiceInfo line rmv = deployedServices.remove(srvcId); the
deployedServices.remove(srvcId) method probably returns null and this is not
handled in any way so an exception is thrown on
deployedServicesByName.remove(rmv.name());
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