org.apache.flink.api.common.InvalidProgramException

Task not serializable

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  • Stack trace

    • org.apache.flink.api.common.InvalidProgramException: Task not serializable at org.apache.flink.api.scala.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:179) at org.apache.flink.api.scala.ClosureCleaner$.clean(ClosureCleaner.scala:171) at org.apache.flink.api.scala.DataSet.clean(DataSet.scala:123) at org.apache.flink.api.scala.DataSet$$anon$10.<init>(DataSet.scala:691) at org.apache.flink.api.scala.DataSet.combineGroup(DataSet.scala:690) at org.apache.flink.ml.classification.KNNModel.transform(KNN.scala:78) at org.apache.flink.ml.classification.KNNITSuite$$anonfun$1.apply$mcV$sp(KNNSuite.scala:25) at org.apache.flink.ml.classification.KNNITSuite$$anonfun$1.apply(KNNSuite.scala:12) at org.apache.flink.ml.classification.KNNITSuite$$anonfun$1.apply(KNNSuite.scala:12) at org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22) at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85) at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104) at org.scalatest.Transformer.apply(Transformer.scala:22) at org.scalatest.Transformer.apply(Transformer.scala:20) at org.scalatest.FlatSpecLike$$anon$1.apply(FlatSpecLike.scala:1647) at org.scalatest.Suite$class.withFixture(Suite.scala:1122) at org.scalatest.FlatSpec.withFixture(FlatSpec.scala:1683) at org.scalatest.FlatSpecLike$class.invokeWithFixture$1(FlatSpecLike.scala:1644) at org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656) at org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656) at org.scalatest.SuperEngine.runTestImpl(Engine.scala:306) at org.scalatest.FlatSpecLike$class.runTest(FlatSpecLike.scala:1656) at org.apache.flink.ml.classification.KNNITSuite.org$scalatest$BeforeAndAfter$$super$runTest(KNNSuite.scala:9) at org.scalatest.BeforeAndAfter$class.runTest(BeforeAndAfter.scala:200) at org.apache.flink.ml.classification.KNNITSuite.runTest(KNNSuite.scala:9) at org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714) at org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714) at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413) at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) at scala.collection.immutable.List.foreach(List.scala:318) at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:390) at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:427) at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) at scala.collection.immutable.List.foreach(List.scala:318) at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396) at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483) at org.scalatest.FlatSpecLike$class.runTests(FlatSpecLike.scala:1714) at org.scalatest.FlatSpec.runTests(FlatSpec.scala:1683) at org.scalatest.Suite$class.run(Suite.scala:1424) at org.scalatest.FlatSpec.org$scalatest$FlatSpecLike$$super$run(FlatSpec.scala:1683) at org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760) at org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760) at org.scalatest.SuperEngine.runImpl(Engine.scala:545) at org.scalatest.FlatSpecLike$class.run(FlatSpecLike.scala:1760) at org.apache.flink.ml.classification.KNNITSuite.org$scalatest$BeforeAndAfter$$super$run(KNNSuite.scala:9) at org.scalatest.BeforeAndAfter$class.run(BeforeAndAfter.scala:241) at org.apache.flink.ml.classification.KNNITSuite.run(KNNSuite.scala:9) at org.scalatest.tools.SuiteRunner.run(SuiteRunner.scala:55) at org.scalatest.tools.Runner$$anonfun$doRunRunRunDaDoRunRun$3.apply(Runner.scala:2563) at org.scalatest.tools.Runner$$anonfun$doRunRunRunDaDoRunRun$3.apply(Runner.scala:2557) at scala.collection.immutable.List.foreach(List.scala:318) at org.scalatest.tools.Runner$.doRunRunRunDaDoRunRun(Runner.scala:2557) at org.scalatest.tools.Runner$$anonfun$runOptionallyWithPassFailReporter$2.apply(Runner.scala:1044) at org.scalatest.tools.Runner$$anonfun$runOptionallyWithPassFailReporter$2.apply(Runner.scala:1043) at org.scalatest.tools.Runner$.withClassLoaderAndDispatchReporter(Runner.scala:2722) at org.scalatest.tools.Runner$.runOptionallyWithPassFailReporter(Runner.scala:1043) at org.scalatest.tools.Runner$.run(Runner.scala:883) at org.scalatest.tools.Runner.run(Runner.scala) at org.jetbrains.plugins.scala.testingSupport.scalaTest.ScalaTestRunner.runScalaTest2(ScalaTestRunner.java:138) at org.jetbrains.plugins.scala.testingSupport.scalaTest.ScalaTestRunner.main(ScalaTestRunner.java:28) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) Caused by: java.io.NotSerializableException: org.apache.flink.ml.metrics.distances.EuclideanDistanceMetric at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348) at org.apache.flink.util.InstantiationUtil.serializeObject(InstantiationUtil.java:314) at org.apache.flink.api.scala.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:177) ... 66 more

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