Dear Tom，
This is likely a Scala version issue, you can check the following aspects:
1. Scala version of your development environment;
2. Whether there are multiple versions of Scala in your development environment;
3. Supported Scala versions for each dependency in the pom.xml file.
At 2020-06-03 00:33:54, "Tom Burgert" <tom.burg...@gmx.de> wrote:
Dear all,
I am trying to set up flink and after hours I still fail to make a simple
program run even though I follow every recommended step in the tutorials.
My operating system is OSX (therefore everything was installed via brew) and I
am using Maven as a build tool. I used the quick start script for scala to set
up a new project.
Then, I only did two things:
1) paced the code from word count object to the BatchJob.scala file
(https://ci.apache.org/projects/flink/flink-docs-release-1.10/dev/batch/)
2) alternated the MainClass in the pom.xml file from StreamJob to BatchJob
Then, I build via "mvn clean package" and run the .jar. file.
When compiling, I receive the following warning:
————————————————————————————————————————————————————————————————————
Expected all dependencies to require Scala version: 2.11.12
org.scala-lang:scala-reflect:2.11.12 requires scala version: 2.11.12
org.apache.flink:flink-scala_2.11:1.10.0 requires scala version: 2.11.12
org.apache.flink:flink-scala_2.11:1.10.0 requires scala version: 2.11.12
org.scala-lang:scala-compiler:2.11.12 requires scala version: 2.11.12
org.scala-lang.modules:scala-xml_2.11:1.0.5 requires scala version: 2.11.7
Multiple versions of scala libraries detected!
————————————————————————————————————————————————————————————————————
Which is weird, since the pom.xml file should keep all versions the same (at
least the structures seems like it) and by playing around with the pom.xml file
I could not prevent this warning. Either way, I could not find any information
on the internet if the warning might be the reason for the error I am getting
when running the jar file.
The error I get when I run my .jar file is the following:
————————————————————————————————————————————————————————————————————
The program finished with the following exception:
org.apache.flink.client.program.ProgramInvocationException: The main method
caused an error: org.apache.flink.client.program.ProgramInvocationException:
Job failed (JobID: 32d249e2b67ef0ecbc72bd164fe1dfb9)
at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335)
at
org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205)
at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:662)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:210)
at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:893)
at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:966)
at
org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:966)
Caused by: java.util.concurrent.ExecutionException:
org.apache.flink.client.program.ProgramInvocationException: Job failed (JobID:
32d249e2b67ef0ecbc72bd164fe1dfb9)
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
at
org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:73)
at
org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:844)
at org.apache.flink.api.java.DataSet.collect(DataSet.java:413)
at org.apache.flink.api.java.DataSet.print(DataSet.java:1652)
at org.apache.flink.api.scala.DataSet.print(DataSet.scala:1864)
at org.myorg.quickstart.BatchJob$.main(BatchJob.scala:19)
at org.myorg.quickstart.BatchJob.main(BatchJob.scala)
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:498)
at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321)
... 8 more
Caused by: org.apache.flink.client.program.ProgramInvocationException: Job
failed (JobID: 32d249e2b67ef0ecbc72bd164fe1dfb9)
at
org.apache.flink.client.deployment.ClusterClientJobClientAdapter.lambda$null$6(ClusterClientJobClientAdapter.java:112)
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
at
java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at
org.apache.flink.client.program.rest.RestClusterClient.lambda$pollResourceAsync$21(RestClusterClient.java:565)
at
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at
org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:291)
at
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:561)
at
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:929)
at
java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution
failed.
at
org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:147)
at
org.apache.flink.client.deployment.ClusterClientJobClientAdapter.lambda$null$6(ClusterClientJobClientAdapter.java:110)
... 19 more
Caused by: org.apache.flink.runtime.JobException: Recovery is suppressed by
NoRestartBackoffTimeStrategy
at
org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:110)
at
org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:76)
at
org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:192)
at
org.apache.flink.runtime.scheduler.DefaultScheduler.maybeHandleTaskFailure(DefaultScheduler.java:186)
at
org.apache.flink.runtime.scheduler.DefaultScheduler.updateTaskExecutionStateInternal(DefaultScheduler.java:180)
at
org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:496)
at
org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:380)
at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:284)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:199)
at
org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:152)
at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26)
at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21)
at scala.PartialFunction.applyOrElse(PartialFunction.scala:123)
at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122)
at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
at akka.actor.Actor.aroundReceive(Actor.scala:517)
at akka.actor.Actor.aroundReceive$(Actor.scala:515)
at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592)
at akka.actor.ActorCell.invoke(ActorCell.scala:561)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258)
at akka.dispatch.Mailbox.run(Mailbox.scala:225)
at akka.dispatch.Mailbox.exec(Mailbox.scala:235)
at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.NoSuchMethodError:
scala.Predef$.refArrayOps([Ljava/lang/Object;)Lscala/collection/mutable/ArrayOps;
at org.myorg.quickstart.BatchJob$$anonfun$1.apply(BatchJob.scala:14)
at org.myorg.quickstart.BatchJob$$anonfun$1.apply(BatchJob.scala:14)
at org.apache.flink.api.scala.DataSet$$anon$5.flatMap(DataSet.scala:609)
at
org.apache.flink.runtime.operators.chaining.ChainedFlatMapDriver.collect(ChainedFlatMapDriver.java:80)
at
org.apache.flink.runtime.operators.util.metrics.CountingCollector.collect(CountingCollector.java:35)
at
org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:196)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:708)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:533)
at java.lang.Thread.run(Thread.java:745)
————————————————————————————————————————————————————————————————————
I would be very glad, if some can help me out with this issue.
Best,
Tom
