Github user rmetzger commented on the issue:
https://github.com/apache/flink/pull/2425
I manually tested the code. Taskmanagers are properly rejected on
missmatching cookies, it works when they match.
One thing I found was that the error reporting is not very good:
```
robert@robert-da ...k-1.2-SNAPSHOT-bin/flink-1.2-SNAPSHOT
(git)-[FLINK-3930] % ./bin/flink run -k asdf ./examples/batch/WordCount.jar
Cluster configuration: Standalone cluster with JobManager at /127.0.0.1:6123
Using address 127.0.0.1:6123 to connect to JobManager.
JobManager web interface address http://127.0.0.1:8081
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: 0816b6a3427cdcfc1160655edc2cef09. 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:404)
at
org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:92)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:380)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:367)
at
org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:61)
at
org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:896)
at org.apache.flink.api.java.DataSet.collect(DataSet.java:410)
at org.apache.flink.api.java.DataSet.print(DataSet.java:1605)
at
org.apache.flink.examples.java.wordcount.WordCount.main(WordCount.java:92)
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:509)
at
org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:403)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:322)
at
org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:775)
at org.apache.flink.client.CliFrontend.run(CliFrontend.java:251)
at
org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1003)
at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1046)
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:292)
at
org.apache.flink.runtime.client.JobClient.submitJobAndWait(JobClient.java:377)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:400)
... 19 more
Caused by:
org.apache.flink.runtime.client.JobClientActorConnectionTimeoutException: Lost
connection to the JobManager.
at
org.apache.flink.runtime.client.JobClientActor.handleMessage(JobClientActor.java:207)
at
org.apache.flink.runtime.akka.FlinkUntypedActor.handleLeaderSessionID(FlinkUntypedActor.java:90)
at
org.apache.flink.runtime.akka.FlinkUntypedActor.onReceive(FlinkUntypedActor.java:70)
at
akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
at akka.dispatch.Mailbox.run(Mailbox.scala:221)
at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
```
But I think that this is akka's fault, not ours.
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