[GitHub] [skywalking] vtdat commented on issue #5663: Skywalking oap NullPointerException

[GitBox <gi...@apache.org>]

vtdat commented on issue #5663:
URL: https://github.com/apache/skywalking/issues/5663#issuecomment-941974718


   I'm using oap 8.8.1
   
   ```
   2021-10-13 06:42:11,247 org.apache.skywalking.oap.server.telemetry.api.HealthCheckMetrics 44 [pool-4-thread-1] ERROR [] - Health check fails
   java.lang.NullPointerException: null
           at org.apache.skywalking.oap.server.cluster.plugin.kubernetes.KubernetesCoordinator.lambda$queryRemoteNodes$2(KubernetesCoordinator.java:80) ~[cluster-kubernetes-plugin-8.8.1.jar:8.8.1]
           at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[?:?]
           at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]
           at java.util.Collections$2.tryAdvance(Collections.java:4747) ~[?:?]
           at java.util.Collections$2.forEachRemaining(Collections.java:4755) ~[?:?]
           at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]
           at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]
           at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[?:?]
           at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
           at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[?:?]
           at org.apache.skywalking.oap.server.cluster.plugin.kubernetes.KubernetesCoordinator.queryRemoteNodes(KubernetesCoordinator.java:81) ~[cluster-kubernetes-plugin-8.8.1.jar:8.8.1]
           at org.apache.skywalking.oap.server.core.remote.client.RemoteClientManager.refresh(RemoteClientManager.java:128) ~[server-core-8.8.1.jar:8.8.1]
           at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
           at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) [?:?]
           at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) [?:?]
           at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
           at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
           at java.lang.Thread.run(Thread.java:829) [?:?]
   2021-10-13 06:42:11,254 org.apache.skywalking.oap.server.core.remote.client.RemoteClientManager 147 [pool-4-thread-1] ERROR [] - null
   org.apache.skywalking.oap.server.core.cluster.ServiceQueryException: null
           at org.apache.skywalking.oap.server.cluster.plugin.kubernetes.KubernetesCoordinator.queryRemoteNodes(KubernetesCoordinator.java:86) ~[cluster-kubernetes-plugin-8.8.1.jar:8.8.1]
           at org.apache.skywalking.oap.server.core.remote.client.RemoteClientManager.refresh(RemoteClientManager.java:128) ~[server-core-8.8.1.jar:8.8.1]
           at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
           at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) [?:?]
           at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) [?:?]
           at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
           at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
           at java.lang.Thread.run(Thread.java:829) [?:?]
   ```


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