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org.apache.thrift.transport.TTransportException: java.net.ConnectException:
Connection refused	at org.apache.zeppelin.interpreter.remote.ClientFactory.create(ClientFactory.java:53)	at org.apache.zeppelin.interpreter.remote.ClientFactory.create(ClientFactory.java:37)	at org.apache.commons.pool2.BasePooledObjectFactory.makeObject(BasePooledObjectFactory.java:60)	at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:861)	at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:435)	at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:363)	at org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess.getClient(RemoteInterpreterProcess.java:138)	at org.apache.zeppelin.scheduler.RemoteScheduler$JobStatusPoller.getStatus(RemoteScheduler.java:224)	at org.apache.zeppelin.scheduler.RemoteScheduler$JobStatusPoller.run(RemoteScheduler.java:183)