dave_demo.launch warning spams

[woensug-choi]

There were TF_REPEATED_DATA spam on the console when running roslaunch dave_demo_launch dave_demo.launch. The spam can be eliminated by 2> >(grep -v TF_REPEATED_DATA) at the end of the launching command as roslaunch dave_demo_launch dave_demo.launch 2> >(grep -v TF_REPEATED_DATA). But still, there were at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp spamming for dave_demo.launch.

[INFO] [1629440622.469918, 0.160000]: Started controllers: /rexrov/oberon7/azimuth/controller, /rexrov/oberon7/shoulder/controller, /rexrov/oberon7/elbow/controller, /rexrov/oberon7/roll/controller, /rexrov/oberon7/pitch/controller, /rexrov/oberon7/wrist/controller
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp
         at line 278 in /tmp/binarydeb/ros-noetic-tf2-0.7.5/src/buffer_core.cpp

2>/dev/null instead of 2> >(grep -v TF_REPEATED_DATA) would not produce any spam-like warnings.

Should we update our wiki for this?

Related Issues and cards,

• Trello card : https://trello.com/c/fO5lHI6z/252-tf-frames-in-noetic-support
• Vrx Issue : Robot Localization Example Tweaks osrf/vrx#258

[mabelzhang]

Copying the relevant link from the Trello card here, for visibility and future reference.

My previous summary about this (bullet 1)
tfoote/nps_me4823#14 (comment)
which links to the original upstream discussions from robot_localization and tf, and the /dev/null workarounds here
https://answers.ros.org/question/359968/tf_repeated_data-error-with-robot_localization-ukf-package/
ros/geometry2#467 (comment)

[woensug-choi]

Field-Robotics-Lab/uuv_simulator#3 solved this issue.