TajoMaster HA startup failure on Yarn.

2015-04-28 04:52:22,266 INFO org.apache.hadoop.service.AbstractService: Service org.apache.tajo.worker.TajoWorker failed in state STARTED; cause: org.apache.tajo.service.ServiceTrackerException: org.apache.tajo.service.ServiceTrackerException: No active master entry
org.apache.tajo.service.ServiceTrackerException: org.apache.tajo.service.ServiceTrackerException: No active master entry
	at org.apache.tajo.ha.HdfsServiceTracker.getAddressElements(HdfsServiceTracker.java:441)
	at org.apache.tajo.ha.HdfsServiceTracker.getUmbilicalAddress(HdfsServiceTracker.java:348)
	at org.apache.tajo.worker.TajoWorker.serviceStart(TajoWorker.java:318)
	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
	at org.apache.tajo.worker.TajoWorker.startWorker(TajoWorker.java:141)
	at org.apache.tajo.worker.TajoWorker.main(TajoWorker.java:627)
Caused by: org.apache.tajo.service.ServiceTrackerException: No active master entry
	at org.apache.tajo.ha.HdfsServiceTracker.getAddressElements(HdfsServiceTracker.java:413)
	... 5 more
2015-04-28 04:52:22,307 INFO org.apache.hadoop.service.AbstractService: Service WorkerHeartbeatService failed in state STOPPED; cause: java.lang.NullPointerException
java.lang.NullPointerException
	at org.apache.tajo.worker.WorkerHeartbeatService$WorkerHeartbeatThread.access$000(WorkerHeartbeatService.java:101)
	at org.apache.tajo.worker.WorkerHeartbeatService.serviceStop(WorkerHeartbeatService.java:90)
	at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
	at org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
	at org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
	at org.apache.hadoop.service.CompositeService.stop(CompositeService.java:157)
	at org.apache.hadoop.service.CompositeService.serviceStop(CompositeService.java:131)
	at org.apache.tajo.worker.TajoWorker.serviceStop(TajoWorker.java:375)
	at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
	at org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
	at org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:203)
	at org.apache.tajo.worker.TajoWorker.startWorker(TajoWorker.java:141)
	at org.apache.tajo.worker.TajoWorker.main(TajoWorker.java:627)