Java client fails to connect to local Flink cluster - apache-flink

Question

I am trying out a small program with a local Flink cluster, setup according to the instructions here. The sample wordcount program runs fine, but when I attempt to run my own program, it stalls and fails while connecting to the job manager. This is Flink 1.5 with JDK 1.8
The relevant part of the code is
FlinkPipelineOptions options = PipelineOptionsFactory.as(FlinkPipelineOptions.class);
options.setStreaming(true);
options.setFlinkMaster("localhost:6123");
options.setRunner(FlinkRunner.class);
I start the cluster with start-cluster.sh, and I can see the two processes (job and task managers) are running. The logs on Flink don't have much. On the client side, after turning on debug, I can see the following
18:43:20.507 [flink-akka.actor.default-dispatcher-4] INFO akka.remote.Remoting - Remoting started; listening on addresses :[akka.tcp://flink#talonx:38183]
18:43:20.511 [main] INFO org.apache.flink.client.program.StandaloneClusterClient - Actor system started at akka.tcp://flink#talonx:38183
18:43:20.511 [main] INFO org.apache.flink.client.program.StandaloneClusterClient - Submitting job with JobID: dbf63281771465550fd3598b2b67b91f. Waiting for job completion.
Submitting job with JobID: dbf63281771465550fd3598b2b67b91f. Waiting for job completion.
18:43:20.521 [flink-akka.actor.default-dispatcher-4] INFO org.apache.flink.runtime.client.JobSubmissionClientActor - Received SubmitJobAndWait(JobGraph(jobId: dbf63281771465550fd3598b2b67b91f)) but there is no connection to a JobManager yet.
18:43:20.522 [flink-akka.actor.default-dispatcher-4] INFO org.apache.flink.runtime.client.JobSubmissionClientActor - Received job test-talonx-0618131319-b721a69a (dbf63281771465550fd3598b2b67b91f).
18:43:20.523 [flink-akka.actor.default-dispatcher-4] INFO org.apache.flink.runtime.client.JobSubmissionClientActor - Disconnect from JobManager null.
After a while, I get the following exception on the client
19:03:19.396 [main] ERROR org.apache.beam.runners.flink.FlinkRunner - Pipeline execution failed
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.client.program.ClusterClient.run(ClusterClient.java:449)
at org.apache.flink.streaming.api.environment.RemoteStreamEnvironment.executeRemotely(RemoteStreamEnvironment.java:212)
at org.apache.flink.streaming.api.environment.RemoteStreamEnvironment.execute(RemoteStreamEnvironment.java:176)
at org.apache.beam.runners.flink.FlinkPipelineExecutionEnvironment.executePipeline(FlinkPipelineExecutionEnvironment.java:126)
at org.apache.beam.runners.flink.FlinkRunner.run(FlinkRunner.java:115)
at org.apache.beam.sdk.Pipeline.run(Pipeline.java:311)
at org.apache.beam.sdk.Pipeline.run(Pipeline.java:297)
at Test.main(Test.java:106)
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)
... 10 common frames omitted
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)
What might be missing here?