Tomoya Fujita comments

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                                            Tomoya Fujita

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rosbag2_cpp::Writer can not close correctly, rasing "Segmentation fault(core dumped)" Error

> But there is something strange, I try to run the code in different demo project, it can close correctly in project A, but can not in project B and...

Implement validity checks for rclcpp::Clock

@methylDragon thank you for iterating with me. > If time has not been set it will return zero if nothing has been received. A time value of zero should be...

Implement validity checks for rclcpp::Clock

> It turns out that ROS has been considering time==0 as invalid since practically forever. It is not ideal, since time==0 is actually valid; it is just the start of...

Implement validity checks for rclcpp::Clock

@methylDragon thanks for iterating with patience, so this has been update and ready to review, right?

Implement validity checks for rclcpp::Clock

> "new non-virtual methods on a class" is an ABI-stable change yeah, correct. i believe backport should be fine. besides, this is something we add, there is no user application...

add job center instructions

@Shelley-BaoYue thanks for iterating, lgtm!

goal_handle attempted invalid transition

CC: @ivanpauno @jacobperron

goal_handle attempted invalid transition

It would be probably nice to backport for galactic and foxy?

ROS2 Daemon fails to respond

I am not sure what went wrong, but i cannot reproduce the problem on my local environment. the following commands can be running more than 30 mins w/o any error...

how about starting `ros2 daemon` in debug mode? ``` root@tomoyafujita:~/ros2_ws/colcon_ws# ros2 daemon start --debug The daemon has been started root@tomoyafujita:~/ros2_ws/colcon_ws# Interface kind: 2, info: [('43.135.133.3', 'enp4s0', True)] Interface kind: 10,...