action 완료 후, action 에 관련한 topic 목록이 마스터에서 사라지지 않는 문제

[dwlee]

지속적으로 action을 호출하고 해당 action이 완료되었음에도 불구하고, master 쪽 topic list에 다음과 같이 계속 남아 있습니다.

/delivery_order_1f3f0776a018452bbb3ddcd965873818/cancel
/delivery_order_1f3f0776a018452bbb3ddcd965873818/feedback
/delivery_order_1f3f0776a018452bbb3ddcd965873818/goal
/delivery_order_1f3f0776a018452bbb3ddcd965873818/result
/delivery_order_1f3f0776a018452bbb3ddcd965873818/status
/delivery_order_2638311243a24b119ca5bcc51066bd78/cancel
/delivery_order_2638311243a24b119ca5bcc51066bd78/feedback
/delivery_order_2638311243a24b119ca5bcc51066bd78/goal
/delivery_order_2638311243a24b119ca5bcc51066bd78/result
/delivery_order_2638311243a24b119ca5bcc51066bd78/status

...

/delivery_order_56ae2cfcf42e41a4b71c8f665a494267/cancel
/delivery_order_56ae2cfcf42e41a4b71c8f665a494267/feedback
/delivery_order_56ae2cfcf42e41a4b71c8f665a494267/goal
/delivery_order_56ae2cfcf42e41a4b71c8f665a494267/result
/delivery_order_56ae2cfcf42e41a4b71c8f665a494267/status
/delivery_order_5d8c5b87da9348debd2f7b77c68105c0/cancel

그리고, 해당 topic의 info를 확인해 보면 publisher만 있고, 실제 subscriber를 하고 있지 않습니다.

> rostopic info /delivery_order_1f3f0776a018452bbb3ddcd965873818/cancel

Type: actionlib_msgs/GoalID

Publishers: 
 * /software/workflow_engine_blockly/rosbridge_websocket (http://192.168.10.24:57797/)

Subscribers: None