moelhoussein commented on PR #4984:
URL: https://github.com/apache/kyuubi/pull/4984#issuecomment-2299879366

   I had that set earlier. when set the k8s client does not seemingly populate 
the master url and I get this:
   ```
   2024-08-20 22:34:49.660 ERROR OkHttp http://k8s/... 
io.fabric8.kubernetes.client.informers.impl.cache.Reflector: listSyncAndWatch 
failed for v1/namespaces/spark/pods, will stop
   java.util.concurrent.CompletionException: java.net.UnknownHostException: k8s
           at 
java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
           at 
java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
           at 
java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:957)
           at 
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:940)
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
           at 
java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
           at 
io.fabric8.kubernetes.client.okhttp.OkHttpClientImpl$1.onFailure(OkHttpClientImpl.java:330)
           at okhttp3.RealCall$AsyncCall.execute(RealCall.java:211)
           at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
           at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
           at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
           at java.lang.Thread.run(Thread.java:750)
   Caused by: java.net.UnknownHostException: k8s
           at java.net.InetAddress$CachedAddresses.get(InetAddress.java:764)
           at java.net.InetAddress.getAllByName0(InetAddress.java:1291)
           at java.net.InetAddress.getAllByName(InetAddress.java:1144)
           at java.net.InetAddress.getAllByName(InetAddress.java:1065)
           at okhttp3.Dns$1.lookup(Dns.java:40)
           at 
okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:185)
           at 
okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:149)
           at 
okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84)
           at 
okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:215)
           at 
okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
           at 
okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
           at 
okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
           at 
okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
           at 
okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
           at 
okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
           at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
           at 
okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
           at okhttp3.RealCall$AsyncCall.execute(RealCall.java:201)
   
   ```


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