Running multiple nodes simulatneously: creation of random listener-topic
I am running multiple nodes(node_1a,node_2a,node_3a,node_1b,node_2b,node_3b) simultaneously on the same bag, same topic. All nodes publish topics with different names - I rechecked that.
When I run node_1a, node_2a, node_3a it's all fine; the moment I run node_1b, the node_2a-generated topic stops and the rosnode info node_2a
gives-
-------------------------------------------------------------------------------- Node [/node_2a] Publications: * /node_2a_result [std_msgs/Float32MultiArray] * /node_2a_filter_result [sensor_msgs/PointCloud2] * /rosout [rosgraph_msgs/Log] Subscriptions: * /input/input_points [sensor_msgs/PointCloud2] Services: * /node_2a/set_logger_level * /node_2a/get_loggers contacting node http://xxxx04-04:53314/ ... Pid: 9365 Connections: * topic: /rosout * to: /rosout * direction: outbound * transport: TCPROS * topic: /node_2a_result * to: /rqt_gui_py_node_8565 * direction: outbound * transport: TCPROS * topic: /node_2a_result * to: **/rostopic_10254_1436386481894** * direction: outbound * transport: TCPROS * topic: /input/input_points * to: /play_1436384733316613571 (http://xxxx04-04:36741/) * direction: inbound * transport: TCPROS
When I run rostopic info /rostopic_10254_1436386481894
it gives me-
ERROR: Unknown topic /rostopic_10254_1436386481894
I am trying to view the node_xx_result of all nodes on rqt_plot but the output for node_2a vanishes. I think this unknown topic is a symptom/reason. What is this topic? How is this generated and can I supress it?