sbt.ForkMain$ForkError: Call From test04.amplab/10.123.1.2 to test04.amplab:0 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:

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Call From test04.amplab/10.123.1.2 to test04.amplab:0 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:
sbt.ForkMain$ForkError: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:547)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
at org.apache.hadoop.ipc.Client.call(Client.java:1318)
at org.apache.hadoop.ipc.Client.call(Client.java:1300)
at com.sun.proxy.$Proxy11.getClusterMetrics(Unknown Source)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
at com.sun.proxy.$Proxy12.getClusterMetrics(Unknown Source)
at org.apache.spark.deploy.yarn.Client$$anonfun$submitApplication$1.apply(Client.scala:69)
at org.apache.spark.deploy.yarn.Client.logInfo(Client.scala:35)
at org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.start(YarnClientSchedulerBackend.scala:61)
at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:141)
at org.apache.spark.SparkContext.(SparkContext.scala:310)
at org.apache.spark.deploy.yarn.YarnClusterDriver$.main(YarnClusterSuite.scala:140)
at org.apache.spark.deploy.yarn.YarnClusterSuite$$anonfun$1.apply$mcV$sp(YarnClusterSuite.scala:91)
at org.apache.spark.deploy.yarn.YarnClusterSuite$$anonfun$1.apply(YarnClusterSuite.scala:89)
at org.scalatest.Transformer$$anonfun$apply$1.apply(Transformer.scala:22)
at org.scalatest.Transformer$$anonfun$apply$1.apply(Transformer.scala:22)
at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
at org.scalatest.Transformer.apply(Transformer.scala:22)
at org.scalatest.Transformer.apply(Transformer.scala:20)
at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:158)
at org.scalatest.Suite$class.withFixture(Suite.scala:1121)
at org.scalatest.FunSuite.withFixture(FunSuite.scala:1559)
at org.scalatest.FunSuiteLike$class.invokeWithFixture$1(FunSuiteLike.scala:155)
at org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:167)
at org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:167)
at org.scalatest.SuperEngine.runTestImpl(Engine.scala:306)
at org.scalatest.FunSuiteLike$class.runTest(FunSuiteLike.scala:167)
at org.scalatest.FunSuite.runTest(FunSuite.scala:1559)
at org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:200)
at org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:200)
at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413)
at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401)
at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396)
at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483)
at org.scalatest.FunSuiteLike$class.runTests(FunSuiteLike.scala:200)
at org.scalatest.FunSuite.runTests(FunSuite.scala:1559)
at org.scalatest.Suite$class.run(Suite.scala:1423)
at org.scalatest.FunSuite.org$scalatest$FunSuiteLike$$super$run(FunSuite.scala:1559)
at org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:204)
at org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:204)
at org.scalatest.SuperEngine.runImpl(Engine.scala:545)
at org.scalatest.FunSuiteLike$class.run(FunSuiteLike.scala:204)
at org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:257)
at org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:256)
at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:444)
at sbt.ForkMain$Run$2.call(ForkMain.java:294)
at sbt.ForkMain$Run$2.call(ForkMain.java:284)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

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