Hello,

I have a running standalone Flink cluster with 2 task managers and 2 job
manages (one task manager and job manager per machine). 
Sometimes, when I restart the cluster I get the following error message: 
/
java.util.concurrent.CompletionException:
org.apache.flink.util.FlinkException: No REST endpoint has been started for
the JobManager.
        at
java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
        at
java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
        at
java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:593)
        at
java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
        at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
        at
java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
        at
org.apache.flink.runtime.concurrent.FutureUtils$1.onComplete(FutureUtils.java:442)
        at akka.dispatch.OnComplete.internal(Future.scala:258)
        at akka.dispatch.OnComplete.internal(Future.scala:256)
        at akka.dispatch.japi$CallbackBridge.apply(Future.scala:186)
        at akka.dispatch.japi$CallbackBridge.apply(Future.scala:183)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:36)
        at
org.apache.flink.runtime.concurrent.Executors$DirectExecutionContext.execute(Executors.java:83)
        at
scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:44)
        at
scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:252)
        at scala.concurrent.Promise$class.complete(Promise.scala:55)
        at
scala.concurrent.impl.Promise$DefaultPromise.complete(Promise.scala:157)
        at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)
        at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:36)
        at
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.processBatch$1(BatchingExecutor.scala:63)
        at
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:78)
        at
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:55)
        at
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:55)
        at
scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)
        at
scala.concurrent.BatchingExecutor$Batch.run(BatchingExecutor.scala:54)
        at
scala.concurrent.Future$InternalCallbackExecutor$.unbatchedExecute(Future.scala:601)
        at
scala.concurrent.BatchingExecutor$class.execute(BatchingExecutor.scala:106)
        at
scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:599)
        at
scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:44)
        at
scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:252)
        at akka.pattern.PromiseActorRef.$bang(AskSupport.scala:534)
        at akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:97)
        at
akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:982)
        at akka.actor.Actor$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)
Caused by: org.apache.flink.util.FlinkException: No REST endpoint has been
started for the JobManager./

which prevents the access to the web interface. 

AM using version 1.4.2

Any idea on what might be causing this?

Regards,
Pedro.





-----
Best Regards,
Pedro Chaves
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