listSyncAndWatch failed for route.openshift encountered for BulkDependentResource with activationCondition downstream of a failing reconcilePrecondition

[k-wall]

Bug Report

Follow on from #3249. I believe that the change made for #3249 was, unfortunately, not adequate.

In the case where the Bulk Dependent Resource is an optional API (such as OpenShift Route), if the code is run on a platform without support for the API (i.e minikube), the Operator fails with a exception whilst trying to start the informer for the API. This happens despite the fact that the Dependent Resource is annotated with an activation condition that will return false.

There's a reproducer https://github.com/k-wall/java-operator-sdk/tree/issue-3271

What did you do?

Attached test case demonstrates the issue.

What did you expect to see?

Normal operator startup. The intent is that the dependency is ignored on platforms that don't have the OpenShift Route API

What did you see instead? Under which circumstances?

Error message in Operator log.

2026-04-06 15:59:24,290 52 i.f.k.c.i.i.c.Reflector        [ERROR] listSyncAndWatch failed for route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes, will stop p:[::] e:[::::] 
java.util.concurrent.CompletionException: io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: GET at: https://192.168.66.3:8443/apis/route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes?resourceVersion=0. Message: Not Found.
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:649)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2179)
	at io.fabric8.kubernetes.client.http.StandardHttpClient.lambda$completeOrCancel$10(StandardHttpClient.java:141)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2179)
	at io.fabric8.kubernetes.client.utils.AsyncUtils.lambda$retryWithExponentialBackoff$3(AsyncUtils.java:91)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:614)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:844)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec$$$capture(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: GET at: https://192.168.66.3:8443/apis/route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes?resourceVersion=0. Message: Not Found.
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.requestFailure(OperationSupport.java:642)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.requestFailure(OperationSupport.java:622)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.assertResponseCode(OperationSupport.java:582)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.lambda$handleResponse$0(OperationSupport.java:549)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	... 20 more
2026-04-06 15:59:24,291 52 i.j.o.a.c.ConfigurationService [DEBUG] Informer stopped: route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes. Has synced: false, Error: java.util.concurrent.CompletionException: io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: GET at: https://192.168.66.3:8443/apis/route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes?resourceVersion=0. Message: Not Found.. This can happen as a result of stopping the controller, or due to an error on startup.See also stopOnInformerErrorDuringStartup configuration. p:[::] e:[::::] 
2026-04-06 15:59:24,291 53 i.j.o.p.e.s.i.InformerWrapper  [ERROR] Informer startup error. Operator will be stopped. Informer: route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes p:[::] e:[::::] 
java.util.concurrent.ExecutionException: io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: GET at: https://192.168.66.3:8443/apis/route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes?resourceVersion=0. Message: Not Found.
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2096)
	at io.javaoperatorsdk.operator.processing.event.source.informer.InformerWrapper.start(InformerWrapper.java:115)
	at io.javaoperatorsdk.operator.processing.event.source.informer.InformerManager.lambda$start$0(InformerManager.java:82)
	at io.javaoperatorsdk.operator.api.config.ExecutorServiceManager.lambda$executeAndWaitForAllToComplete$0(ExecutorServiceManager.java:85)
	at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:317)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: GET at: https://192.168.66.3:8443/apis/route.openshift.io/v1/namespaces/bulkactivationconditionit-nodedeleteexecutorshouldnotthro-41eb6/routes?resourceVersion=0. Message: Not Found.
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.requestFailure(OperationSupport.java:642)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.requestFailure(OperationSupport.java:622)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.assertResponseCode(OperationSupport.java:582)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.lambda$handleResponse$0(OperationSupport.java:549)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2179)
	at io.fabric8.kubernetes.client.http.StandardHttpClient.lambda$completeOrCancel$10(StandardHttpClient.java:141)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2179)
	at io.fabric8.kubernetes.client.utils.AsyncUtils.lambda$retryWithExponentialBackoff$3(AsyncUtils.java:91)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:614)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:844)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec$$$capture(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)

Environment

Kubernetes cluster type:
Minikube.

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

5.3.2

$ java -version

$ kubectl version

Possible Solution

Additional context

[csviri]

Thx for reporting @k-wall , I will take a look

[csviri]

@k-wall I added a PR, if you could take a look on the PR / test it locally would be great. I will add additional integration test(s), to verify this case.

[k-wall]

@k-wall I added a PR, if you could take a look on the PR / test it locally would be great. I will add additional integration test(s), to verify this case.

I'll give that a try tomorrow, thank you.