Flink在Java 10启动时失败.TaskManager:java.lang.ClassCastException:[B无法强制转换为[C

时间:2018-05-11 21:30:50

标签: scala apache-flink

背景

启动Flink时,我立即在日志中失败,并且后续运行应用程序的尝试都失败了。我已经缩小了特定于Java 10的失败,可能还有其他先决条件。

摄制

  1. the official download page下载并解压缩Flink 1.4.2。
  2. 切换到Java 10.我的特定版本信息在(1)。
  3. 使用./bin/start-local.sh启动Flink。
  4. 观察TaskManager日志。例如,cat ./log/flink-ming-taskmanager-0-C02TJ6XBG8WN.log。将出现大量错误输出,如(2)中所述。
  5. 运行任何应用程序。例如,./bin/flink run ~/git/ming-data-frameworks-poc/flinkpoc/target/scala-2.11/flinkpoc_2.11-0.1-SNAPSHOT.jar --port 900。我的示例应用程序在(3)中,但据我所知,任何应用程序都会发生这种情况。它应该失败并出现错误,如(4)
  6. 使用./bin/stop-local.sh停止Flink。
  7. 清空Flink日志目录。
  8. 切换到Java 8.我的特定版本信息在(5)。
  9. 重复步骤3 - 7.
  10. 它应显示成功消息,如(6)所示。它不应该因错误而失败。 TaskManager日志不应包含步骤4中的错误输出。
  11. 问题

    这是一个已知的不兼容性吗?它没有记录在案。特别是,the official quick start documentation说:

      

    Flink可在Linux,Mac OS X和Windows上运行。为了能够运行Flink,   唯一的要求是拥有一个可用的Java 7.x(或更高版本)   安装。

    如何在Java 10上修复或解决此问题?

    这是Flink中的错误吗?是否应该在项目的上游报告?

    提前感谢您提供任何建议或帮助。

    补充资料

    (1)

    $ uname -a
    Darwin C02TJ6XBG8WN 16.7.0 Darwin Kernel Version 16.7.0: Tue Jan 30 11:27:06 PST 2018; root:xnu-3789.73.11~1/RELEASE_X86_64 x86_64
    
    $ java -version
    java version "10.0.1" 2018-04-17
    Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
    Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)
    

    (2)

    2018-05-11 17:19:05,353 WARN  akka.remote.ReliableDeliverySupervisor                        - Association with remote system [akka.tcp://flink@localhost:6123] has failed, address is now gated for [5000] ms. Reason: [[B cannot be cast to [C] 
    2018-05-11 17:19:10,428 WARN  akka.remote.ReliableDeliverySupervisor                        - Association with remote system [akka.tcp://flink@localhost:6123] has failed, address is now gated for [5000] ms. Reason: [Disassociated] 
    2018-05-11 17:19:23,111 ERROR akka.remote.Remoting                                          - [B cannot be cast to [C
    java.lang.ClassCastException: [B cannot be cast to [C
        at akka.remote.artery.FastHash$.ofString(LruBoundedCache.scala:18)
        at akka.remote.serialization.ActorRefResolveCache.hash(ActorRefResolveCache.scala:61)
        at akka.remote.serialization.ActorRefResolveCache.hash(ActorRefResolveCache.scala:55)
        at akka.remote.artery.LruBoundedCache.getOrCompute(LruBoundedCache.scala:110)
        at akka.remote.RemoteActorRefProvider.resolveActorRef(RemoteActorRefProvider.scala:403)
        at akka.actor.SerializedActorRef.readResolve(ActorRef.scala:433)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at java.base/java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1250)
        at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2087)
        at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1585)
        at java.base/java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2346)
        at java.base/java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2240)
        at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2078)
        at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1585)
        at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:422)
        at akka.serialization.JavaSerializer$$anonfun$1.apply(Serializer.scala:328)
        at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
        at akka.serialization.JavaSerializer.fromBinary(Serializer.scala:328)
        at akka.serialization.Serialization.akka$serialization$Serialization$$deserializeByteArray(Serialization.scala:156)
        at akka.serialization.Serialization$$anonfun$deserialize$2.apply(Serialization.scala:142)
        at scala.util.Try$.apply(Try.scala:192)
        at akka.serialization.Serialization.deserialize(Serialization.scala:136)
        at akka.remote.MessageSerializer$.deserialize(MessageSerializer.scala:30)
        at akka.remote.DefaultMessageDispatcher.payload$lzycompute$1(Endpoint.scala:64)
        at akka.remote.DefaultMessageDispatcher.payload$1(Endpoint.scala:64)
        at akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:82)
        at akka.remote.EndpointReader$$anonfun$akka$remote$EndpointReader$$deliverAndAck$1.apply(Endpoint.scala:1047)
        at akka.remote.EndpointReader$$anonfun$akka$remote$EndpointReader$$deliverAndAck$1.apply(Endpoint.scala:1046)
        at scala.collection.Iterator$class.foreach(Iterator.scala:891)
        at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
        at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
        at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
        at akka.remote.EndpointReader.akka$remote$EndpointReader$$deliverAndAck(Endpoint.scala:1046)
        at akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:980)
        at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
        at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:446)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
        at akka.actor.ActorCell.invoke(ActorCell.scala:495)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
        at akka.dispatch.Mailbox.run(Mailbox.scala:224)
        at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
    

    (3)

    build.sbt

    name := "flinkpoc"
    
    version := "0.1-SNAPSHOT"
    
    scalaVersion := "2.11.8"
    
    val flinkVersion = "1.4.2"
    
    libraryDependencies := Seq(
      "org.apache.flink" %% "flink-scala" % flinkVersion % "provided",
      "org.apache.flink" %% "flink-streaming-scala" % flinkVersion % "provided"
    )
    

    SimpleJob.scala

    package flinkpoc
    
    import org.apache.flink.streaming.api.scala._
    
    object SimpleJob {
    
      def main(args: Array[String]): Unit = {
        val env = StreamExecutionEnvironment.getExecutionEnvironment
    
        val inStream = env.fromCollection(Range(0, 100).toList)
        val outStream = inStream.map(_ * 100)
        outStream.print
    
        env.execute("flinkpoc.SimpleJob")
      }
    
    }
    

    (4)

    org.apache.flink.client.program.ProgramInvocationException: The program execution failed: Couldn't retrieve the JobExecutionResult from the JobManager.
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:492)
        at org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:105)
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:456)
        at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)
        at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:638)
        at flinkpoc.SimpleJob$.main(SimpleJob.scala:14)
        at flinkpoc.SimpleJob.main(SimpleJob.scala)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:525)
        at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:417)
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:396)
        at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:802)
        at org.apache.flink.client.CliFrontend.run(CliFrontend.java:282)
        at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1054)
        at org.apache.flink.client.CliFrontend$1.call(CliFrontend.java:1101)
        at org.apache.flink.client.CliFrontend$1.call(CliFrontend.java:1098)
        at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
        at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1098)
    Caused by: org.apache.flink.runtime.client.JobExecutionException: Couldn't retrieve the JobExecutionResult from the JobManager.
        at org.apache.flink.runtime.client.JobClient.awaitJobResult(JobClient.java:300)
        at org.apache.flink.runtime.client.JobClient.submitJobAndWait(JobClient.java:387)
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:481)
        ... 20 more
    Caused by: org.apache.flink.runtime.client.JobClientActorConnectionTimeoutException: Lost connection to the JobManager.
        at org.apache.flink.runtime.client.JobClientActor.handleMessage(JobClientActor.java:219)
        at org.apache.flink.runtime.akka.FlinkUntypedActor.handleLeaderSessionID(FlinkUntypedActor.java:104)
        at org.apache.flink.runtime.akka.FlinkUntypedActor.onReceive(FlinkUntypedActor.java:71)
        at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:165)
        at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
        at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
        at akka.actor.ActorCell.invoke(ActorCell.scala:495)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
        at akka.dispatch.Mailbox.run(Mailbox.scala:224)
        at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
    

    (5)

    $ java -version
    java version "1.8.0_172"
    Java(TM) SE Runtime Environment (build 1.8.0_172-b11)
    Java HotSpot(TM) 64-Bit Server VM (build 25.172-b11, mixed mode)
    

    (6)

    Program execution finished
    Job with JobID b41e26f012480d2842cbb8bde0098180 has finished.
    Job Runtime: 379 ms
    

1 个答案:

答案 0 :(得分:6)

文档已过期。 Flink 1.4放弃了对Java 7的支持,并且还不支持Java版本9和10。您需要使用Java 8。

更新

Flink-8033是跟踪Java 9支持的Jira问题。