Suspend fails with InvalidStateTransitionException if entity has 'KILLED' instances

dataqa@lda01:~$ fep -name ProcessWfTest-agregator-coord16-bcc5f5bd -suspend
ERROR: Bad Request;ua1/org.apache.falcon.FalconWebException::org.apache.falcon.FalconException: Some instances failed to suspend : Instance suspend failed for : PROCESS/ProcessWfTest-agregator-coord16-bcc5f5bd/ProcessWfTest-corp-b3eeaf12/2016-01-05-14-00 due to Suspend failed for instance : PROCESS/ProcessWfTest-agregator-coord16-bcc5f5bd/ProcessWfTest-corp-b3eeaf12/2016-01-05-14-00

2016-01-05 14:32:54,398 ERROR - [1053544342@qtp-1816147548-4 - 9441ce75-cca6-4962-9efe-f58e60b44c2e:dataqa:POST//entities/suspend/process/ProcessWfTest-agregator-coord16-bcc5f5bd] ~ Suspend failed for instance id : PROCESS/ProcessWfTest-agregator-coord16-bcc5f5bd/ProcessWfTest-corp-b3eeaf12/2016-01-05-14-00 (ProcessExecutor:248)
org.apache.falcon.exception.InvalidStateTransitionException: Instance is in terminal state, KILLED. Cannot apply transitions.
	at org.apache.falcon.state.InstanceState$STATE$6.nextTransition(InstanceState.java:137)
	at org.apache.falcon.state.InstanceState$STATE$6.nextTransition(InstanceState.java:128)
	at org.apache.falcon.state.InstanceState.nextTransition(InstanceState.java:236)
	at org.apache.falcon.state.StateService.handleStateChange(StateService.java:141)
	at org.apache.falcon.execution.ProcessExecutor.suspend(ProcessExecutor.java:246)
	at org.apache.falcon.execution.ProcessExecutor.suspendAll(ProcessExecutor.java:153)
	at org.apache.falcon.execution.FalconExecutionService.onSuspend(FalconExecutionService.java:170)
	at org.apache.falcon.state.StateService.callbackHandler(StateService.java:105)
	at org.apache.falcon.state.StateService.handleStateChange(StateService.java:83)
	at org.apache.falcon.execution.FalconExecutionService.suspend(FalconExecutionService.java:203)
	at org.apache.falcon.workflow.engine.FalconWorkflowEngine.suspend(FalconWorkflowEngine.java:118)
	at org.apache.falcon.resource.AbstractSchedulableEntityManager.suspend(AbstractSchedulableEntityManager.java:223)
	at org.apache.falcon.resource.SchedulableEntityManager.suspend(SchedulableEntityManager.java:167)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)