Aljoscha Krettek created FLINK-15251:
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Summary: Fabric8FlinkKubeClient doesn't work if ingress has
hostname but no IP
Key: FLINK-15251
URL: https://issues.apache.org/jira/browse/FLINK-15251
Project: Flink
Issue Type: Bug
Components: Deployment / Kubernetes
Affects Versions: 1.10.0
Environment: Kubernetes for Docker on MacOS
Reporter: Aljoscha Krettek
Fix For: 1.10.0
In my setup the ingress has a hostname but no IP here:
https://github.com/apache/flink/blob/f49e632bb290ded45b320f5d00ceaa1543a6bb1c/flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/Fabric8FlinkKubeClient.java#L199
This means that when I try to use the Kubernetes Executor I will get
{code}
Exception in thread "main" java.lang.NullPointerException: Address should not
be null.
at
org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:75)
at
org.apache.flink.kubernetes.kubeclient.Endpoint.<init>(Endpoint.java:33)
at
org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient.getRestEndpoint(Fabric8FlinkKubeClient.java:209)
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.lambda$createClusterClientProvider$0(KubernetesClusterDescriptor.java:82)
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.retrieve(KubernetesClusterDescriptor.java:106)
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.retrieve(KubernetesClusterDescriptor.java:53)
at
org.apache.flink.client.deployment.AbstractSessionClusterExecutor.execute(AbstractSessionClusterExecutor.java:60)
at
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:1741)
at
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:1712)
at
org.apache.flink.streaming.examples.statemachine.StateMachineExample.main(StateMachineExample.java:169)
{code}
I think we can just check if a hostname is set and use that if there is no IP.
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