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Recently got a new macbook and figured it was a good time to install java 9 and try it out. I didn't realize that Java 9 was such a breaking update (eg: https://blog.codefx.org/java/java-9-migration-guide/) and took the Flink documentation at face value and assumed that Java 7+ or higher would be fine.
Here's is what happens after starting a local cluster and attempting to run the sample WordCount program under Java 9:
flink-1.4.0 $ export JAVA_HOME=$(/usr/libexec/java_home -v 9) cru@lappy:flink-1.4.0 $ java -version java version "9.0.1" Java(TM) SE Runtime Environment (build 9.0.1+11) Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode) cru@lappy:flink-1.4.0 $ bin/start-cluster.sh Starting cluster. Starting jobmanager daemon on host lappy.local. Starting taskmanager daemon on host lappy.local. cru@lappy:flink-1.4.0 $ bin/flink run examples/streaming/WordCount.jar Cluster configuration: Standalone cluster with JobManager at localhost/127.0.0.1:6123 Using address localhost:6123 to connect to JobManager. JobManager web interface address http://localhost:8081 Starting execution of program Executing WordCount example with default input data set. Use --input to specify file input. Printing result to stdout. Use --output to specify output path. Submitting job with JobID: ee054ffeb4784848143b76b7d51d99c1. Waiting for job completion. ------------------------------------------------------------ The program finished with the following exception: 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.examples.wordcount.WordCount.main(WordCount.java:89) 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) ... 18 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) WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by org.apache.flink.shaded.akka.org.jboss.netty.util.internal.ByteBufferUtil (file:/Users/cru/proj/flink/flink-1.4.0/lib/flink-dist_2.11-1.4.0.jar) to method java.nio.DirectByteBuffer.cleaner() WARNING: Please consider reporting this to the maintainers of org.apache.flink.shaded.akka.org.jboss.netty.util.internal.ByteBufferUtil WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release
Strangely, the logs seemed to suggest that the JobManager was running fine before submitting the job, so figured this was just a problem with the client. The long timeout also made it seem like a low level network issue.
Changing to Java 8 (without bouncing the local cluster) similarly times out as well, but gives a slightly different error. Including it here just for posterity in case someone doesn't bounce the server like I did (To be clear: in this case JobManager and TaskManager processes are still running under java 9.):
$ java -version java version "1.8.0_151" Java(TM) SE Runtime Environment (build 1.8.0_151-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode) cru@lappy:flink-1.4.0 $ bin/flink run examples/streaming/WordCount.jar Cluster configuration: Standalone cluster with JobManager at localhost/127.0.0.1:6123 Using address localhost:6123 to connect to JobManager. JobManager web interface address http://localhost:8081 Starting execution of program Executing WordCount example with default input data set. Use --input to specify file input. Printing result to stdout. Use --output to specify output path. Submitting job with JobID: 6bd8fb1a904098473634a7290fbde812. Waiting for job completion. Connected to JobManager at Actor[akka.tcp://flink@localhost:6123/user/jobmanager#1031166856] with leader session id 00000000-0000-0000-0000-000000000000. ------------------------------------------------------------ The program finished with the following exception: org.apache.flink.client.program.ProgramInvocationException: The program execution failed: Could not retrieve BlobServer address. 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.examples.wordcount.WordCount.main(WordCount.java:89) 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: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.JobSubmissionException: Could not retrieve BlobServer address. at org.apache.flink.runtime.client.JobSubmissionClientActor$1.call(JobSubmissionClientActor.java:166) at akka.dispatch.Futures$$anonfun$future$1.apply(Future.scala:97) at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) Caused by: java.util.concurrent.TimeoutException at java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771) at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) at org.apache.flink.runtime.client.JobSubmissionClientActor$1.call(JobSubmissionClientActor.java:160) ... 9 more
While I get that supporting Java 9 completely is probably a larger task, at the very least we should update documentation / prereqs to say that Flink is not yet compatible.
Attachments
Issue Links
- relates to
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FLINK-8033 JDK 9 support
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- Closed
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