Method Reconciler#reconcile is not triggered when resource is deleted.

Bug Report

I wanted to create metric exporter for certain resource type.
For this I implemented Reconciler with triggerReconcilerOnAllEvents enabled (introducerd in JOSDK 5.2) to receive all events (create, update and delete).

Method Reconciler#reconcile is not triggered when resource is deleted.

What did you do?

@ControllerConfiguration(triggerReconcilerOnAllEvents = true, generationAwareEventProcessing = false)
public class MyResourceReconciler implements Reconciler<MyResource>{

    private static final Logger LOG = Logger.getLogger(MyResourceReconciler.class);

    @Override
    public UpdateControl<MyResource> reconcile(MyResource resource, Context<MyResource> context) throws Exception {
	   LOG.infof("Resource %s/%s event", resource.getMetadata().getNamespace(), resource.getMetadata().getName());
        if(context.isPrimaryResourceDeleted()){
            LOG.infof("deleted");
            return UpdateControl.noUpdate();
        }
        LOG.infof("created/updated");
        return UpdateControl.noUpdate();
    }

}

What did you expect to see?

When I create, update and delete resource I expected to see in logs:

INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-92) Resource mynamespace/myresource event
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-92) created/updated
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-93) Resource mynamespace/myresource event
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-93) created/updated
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-93) Resource mynamespace/myresource event
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-93) deleted

What did you see instead? Under which circumstances?

When I create, update and delete resource I see in logs:

INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-92) Resource mynamespace/myresource event
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-92) created/updated
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-93) Resource mynamespace/myresource event
INFO  [com.test.MyResourceReconciler] (ReconcilerExecutor-myresourcereconciler-93) created/updated

Environment

Kubernetes cluster type:

OpenShift 4.19.43

$ Mention java-operator-sdk version from pom.xml file

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.quarkus.platform</groupId>
                <artifactId>quarkus-bom</artifactId>
                <version>3.39.3</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>io.quarkus.platform</groupId>
                <artifactId>quarkus-operator-sdk-bom</artifactId>
                <version>3.39.3</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependency>
        <groupId>io.quarkiverse.operatorsdk</groupId>
        <artifactId>quarkus-operator-sdk</artifactId>
    </dependency>

resolves to: io.javaoperatorsdk:operator-framework-core:5.5.0

$ java -version

openjdk version "25.0.4.1" 2026-08-18 LTS
OpenJDK Runtime Environment Temurin-25.0.4.1+1 (build 25.0.4.1+1-LTS)
OpenJDK 64-Bit Server VM Temurin-25.0.4.1+1 (build 25.0.4.1+1-LTS, mixed mode, sharing)

$ kubectl version

Client Version: 4.19.0-202608112108.p2.gb2a93a6.assembly.stream.el9-b2a93a6
Kustomize Version: v5.5.0
Kubernetes Version: v1.32.13

Additional context

• resources does not have finalizers
• adding defaultFilters = false to ControllerConfiguration did not helped

Tái hiện vấn đề với MyResourceReconciler và ControllerConfiguration được cung cấp, sau đó lần theo đường dẫn xử lý sự kiện đến Reconciler#reconcile đối với các sự kiện xóa. Hoàn thành khi thao tác xóa kích hoạt reconcile với context.isPrimaryResourceDeleted() true, trong khi hành vi tạo và cập nhật vẫn không thay đổi; thêm hoặc cập nhật độ bao phủ nếu tìm thấy các bài kiểm thử xử lý sự kiện liên quan.