I had a similar issue when running in Spark in cluster mode. My problem was that the server was started with the hostname 'fluentd:7077' and not the FQDN. I edited the
/sbin/start-master.sh
to reflect how my remote nodes connect with the -ip flag.
/usr/lib/jvm/jdk1.7.0_51/bin/java -cp :/home/vagrant/spark-0.9.0-incubating-bin- hadoop2/conf:/home/vagrant/spark-0.9.0-incuba
ting-bin-hadoop2/assembly/target/scala-2.10/spark-assembly_2.10-0.9.0-incubating-hadoop2.2.0.jar -Dspark.akka.logLifecycleEvents=true -Djava.library.path= -Xms512m -Xmx512m org.ap
ache.spark.deploy.master.Master --ip fluentd.alex.dev --port 7077 --webui-port 8080
Hope this helps.