Hello,
I’m getting below intermittent error when I spark-submit a Spark 2.3 app on Kubernetes v1.8.3 , some of the executor pods were killed with below error as soon as they come up Exception in thread "main" java.lang.reflect.UndeclaredThrowableException at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1713) at org.apache.spark.deploy.SparkHadoopUtil.runAsSparkUser(SparkHadoopUtil.scala:64) at org.apache.spark.executor.CoarseGrainedExecutorBackend$.run(CoarseGrainedExecutorBackend.scala:188) at org.apache.spark.executor.CoarseGrainedExecutorBackend$.main(CoarseGrainedExecutorBackend.scala:293) at org.apache.spark.executor.CoarseGrainedExecutorBackend.main(CoarseGrainedExecutorBackend.scala) Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205) at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala:75) at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:101) at org.apache.spark.executor.CoarseGrainedExecutorBackend$$anonfun$run$1.apply$mcV$sp(CoarseGrainedExecutorBackend.scala:201) at org.apache.spark.deploy.SparkHadoopUtil$$anon$2.run(SparkHadoopUtil.scala:65) at org.apache.spark.deploy.SparkHadoopUtil$$anon$2.run(SparkHadoopUtil.scala:64) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) ... 4 more Caused by: java.io.IOException: Failed to connect to spark-1527629824987-driver-svc.spark.svc:7078 at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:245) at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:187) at org.apache.spark.rpc.netty.NettyRpcEnv.createClient(NettyRpcEnv.scala:198) at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:194) at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:190) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.net.UnknownHostException: spark-1527629824987-driver-svc.spark.svc at java.net.InetAddress.getAllByName0(InetAddress.java:1280) at java.net.InetAddress.getAllByName(InetAddress.java:1192) at java.net.InetAddress.getAllByName(InetAddress.java:1126) at java.net.InetAddress.getByName(InetAddress.java:1076) at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146) at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:143) at java.security.AccessController.doPrivileged(Native Method) at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:143) at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43) at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63) at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55) at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57) at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32) at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108) at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208) at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:49) at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:188) at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:174) at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507) at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:481) at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420) at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104) at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82) at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:978) at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:512) at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:423) at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:482) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138) ... 1 more ________________________________________________________ The information contained in this e-mail is confidential and/or proprietary to Capital One and/or its affiliates and may only be used solely in performance of work or services for Capital One. 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