IBM InfoSphere Streams Version 4.1.1

Processing element status values

Processing elements (PEs) have state and reason code (RC) values that provide information about the status of the PE.

Table 1. Processing element states
PE state	Description
Constructed	The PE is initializing.
Restarting	The PE is restarting.
Running	The PE is running.
Starting	The PE is starting.
Stopped	The PE is stopped.
Stopping	The PE is stopping.
Unknown	The host controller service cannot be contacted to determine the current state of the PE.

Table 2. Processing element reason codes
Reason code	Description
(-) None	No reason code is available.
(A) Automatic	The system automatically moved the PE to this state.
(C) Crashed	PE processing stopped unexpectedly with a signal condition such as a segmentation violation (SEGV).
(F) Failure	The PE processing completed, but it returned a completion code that indicates that a failure occurred.
(H) Host failure	The PE is transitioning to a new resource because the resource it was running on experienced a failure. The host controller service that is associated with the resource was removed or restarted.
(N) No feasible resource	The scheduler service cannot find a resource to run the PE.
(R) User request	There was a user request to move the PE to this state, for example, stopping the PE because of a job cancellation request.
(S) Set capabilities failure	The host controller service cannot set the requested authority for the PE.
(V) Voluntary	The PE stopped because its processing completed successfully without any errors.