Getting below errors when I’m trying to run spark-submit on k8 cluster
*Error 1*:This looks like a warning it doesn’t interrupt the app running inside executor pod but keeps on getting this warning *2018-03-09 11:15:21 WARN WatchConnectionManager:192 - Exec Failure* * java.io.EOFException* * at okio.RealBufferedSource.require(RealBufferedSource.java:60)* * at okio.RealBufferedSource.readByte(RealBufferedSource.java:73)* * at okhttp3.internal.ws.WebSocketReader.readHeader(WebSocketReader.java:113)* * at okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:97)* * at okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:262)* * at okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:201)* * at okhttp3.RealCall$AsyncCall.execute(RealCall.java:141)* * at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)* * at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)* * at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)* * at java.lang.Thread.run(Thread.java:748)* *Error2:* This is intermittent error which is failing the executor pod to run *org.apache.spark.SparkException: External scheduler cannot be instantiated* * at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2747)* * at org.apache.spark.SparkContext.<init>(SparkContext.scala:492)* * at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2486)* * at org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:930)* * at org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:921)* * at scala.Option.getOrElse(Option.scala:121)* * at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:921)* * at com.capitalone.quantum.spark.core.QuantumSession$.initialize(QuantumSession.scala:62)* * at com.capitalone.quantum.spark.core.QuantumSession$.getSparkSession(QuantumSession.scala:80)* * at com.capitalone.quantum.workflow.WorkflowApp$.getSession(WorkflowApp.scala:116)* * at com.capitalone.quantum.workflow.WorkflowApp$.main(WorkflowApp.scala:90)* * at com.capitalone.quantum.workflow.WorkflowApp.main(WorkflowApp.scala)* * Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get] for kind: [Pod] with name: [myapp-ef79db3d9f4831bf85bda14145fdf113-driver-driver] in namespace: [default] failed.* * at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:62)* * at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:71)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:228)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:184)* * at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterSchedulerBackend.<init>(KubernetesClusterSchedulerBackend.scala:70)* * at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterManager.createSchedulerBackend(KubernetesClusterManager.scala:120)* * at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2741)* * ... 11 more* * Caused by: java.net.UnknownHostException: kubernetes.default.svc: Try again* * at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)* * at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)* * at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)* * at java.net.InetAddress.getAllByName0(InetAddress.java:1276)* * at java.net.InetAddress.getAllByName(InetAddress.java:1192)* * at java.net.InetAddress.getAllByName(InetAddress.java:1126)* * at okhttp3.Dns$1.lookup(Dns.java:39)* * at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:171)* * at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:137)* * at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:82)* * at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:171)* * at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:121)* * at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:100)* * at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at io.fabric8.kubernetes.client.utils.HttpClientUtils$2.intercept(HttpClientUtils.java:93)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:185)* * at okhttp3.RealCall.execute(RealCall.java:69)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:377)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:343)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:312)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:295)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:783)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:217)* * ... 15 more* * 2018-03-09 15:00:39 INFO AbstractConnector:318 - Stopped Spark@5f59185e{HTTP/1.1,[http/1.1]}{0.0.0.0:4040 <http://0.0.0.0:4040/>}* * 2018-03-09 15:00:39 INFO SparkUI:54 - Stopped Spark web UI at http://myapp-ef79db3d9f4831bf85bda14145fdf113-driver-svc.default.svc:4040 <http://myapp-ef79db3d9f4831bf85bda14145fdf113-driver-svc.default.svc:4040/>* * 2018-03-09 15:00:39 INFO MapOutputTrackerMasterEndpoint:54 - MapOutputTrackerMasterEndpoint stopped!* * 2018-03-09 15:00:39 INFO MemoryStore:54 - MemoryStore cleared* * 2018-03-09 15:00:39 INFO BlockManager:54 - BlockManager stopped* * 2018-03-09 15:00:39 INFO BlockManagerMaster:54 - BlockManagerMaster stopped* * 2018-03-09 15:00:39 WARN MetricsSystem:66 - Stopping a MetricsSystem that is not running* * 2018-03-09 15:00:39 INFO OutputCommitCoordinator$OutputCommitCoordinatorEndpoint:54 - OutputCommitCoordinator stopped!* * 2018-03-09 15:00:39 INFO SparkContext:54 - Successfully stopped SparkContext* * Exception in thread "main" org.apache.spark.SparkException: External scheduler cannot be instantiated* * at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2747)* * at org.apache.spark.SparkContext.<init>(SparkContext.scala:492)* * at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2486)* * at org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:930)* * at org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:921)* * at scala.Option.getOrElse(Option.scala:121)* * at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:921)* * at com.capitalone.quantum.spark.core.QuantumSession$.initialize(QuantumSession.scala:62)* * at com.capitalone.quantum.spark.core.QuantumSession$.getSparkSession(QuantumSession.scala:80)* * at com.capitalone.quantum.workflow.WorkflowApp$.getSession(WorkflowApp.scala:116)* * at com.capitalone.quantum.workflow.WorkflowApp$.main(WorkflowApp.scala:90)* * at com.capitalone.quantum.workflow.WorkflowApp.main(WorkflowApp.scala)* * Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get] for kind: [Pod] with name: [myapp-ef79db3d9f4831bf85bda14145fdf113-driver] in namespace: [default] failed.* * at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:62)* * at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:71)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:228)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:184)* * at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterSchedulerBackend.<init>(KubernetesClusterSchedulerBackend.scala:70)* * at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterManager.createSchedulerBackend(KubernetesClusterManager.scala:120)* * at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2741)* * ... 11 more* * Caused by: java.net.UnknownHostException: kubernetes.default.svc: Try again* * at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)* * at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)* * at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)* * at java.net.InetAddress.getAllByName0(InetAddress.java:1276)* * at java.net.InetAddress.getAllByName(InetAddress.java:1192)* * at java.net.InetAddress.getAllByName(InetAddress.java:1126)* * at okhttp3.Dns$1.lookup(Dns.java:39)* * at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:171)* * at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:137)* * at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:82)* * at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:171)* * at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:121)* * at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:100)* * at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at io.fabric8.kubernetes.client.utils.HttpClientUtils$2.intercept(HttpClientUtils.java:93)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)* * at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)* * at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:185)* * at okhttp3.RealCall.execute(RealCall.java:69)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:377)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:343)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:312)* * at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:295)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:783)* * at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:217)* * ... 15 more* * 2018-03-09 15:00:39 INFO ShutdownHookManager:54 - Shutdown hook called* * 2018-03-09 15:00:39 INFO ShutdownHookManager:54 - Deleting directory /tmp/spark-5bd85c96-d689-4c53-a0b3-1eadd32357cb* Note:Able to run the application successfully but spark-submit run fails with above error2 very frequently.