I'm having an error when running yarn on a job. HDFS and Yarn both start up fine, jps shows everything normal, pseudo-distributed mode on HDFS works perfectly, and I have triple and quadruple checked my configuration files. Whenever I attempt to run Yarn, however, this happens:
INFO retry.RetryInvocationHandler: java.net.ConnectException: Call From serverA/IPaddress to serverB:30170 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused, while invoking ApplicationClientProtocolPBClientImpl.getNewApplication over null after 6 failover attempts. Trying to failover after sleeping for 44428ms.
Yarn then attempts to connect over and over again until I forcefully quit the process. Any ideas why this is happening?