Tomoya Fujita

@MiguelCompany any thoughts?

@MiguelCompany @eProsima/team this is deadlock issue, just friendly ping.

@MiguelCompany thanks! we will try that out and get back to you.

@MiguelCompany i will check the evaluation status, will get back to you soon.

> Fujita-san that is me 😄 family name!

sorry we confirmed that no deadlock observed after this PR.

Is there any official and up-to-date one instead of https://github.com/weaveworks/weave/issues/3960#issuecomment-1265751492?

CC: @iuhilnehc-ynos

I believe that your assumption is correct. if you are willing to contribute, we are happy to review! Thanks! we have two different use cases for each callback. parameters belong...

https://github.com/ros2/demos has both `add_on_set_parameters_callback` and `on_parameter_event`, so i think we just need to add documentation for both of them. probably we can add more details on here? https://docs.ros.org/en/rolling/Concepts/About-ROS-2-Parameters.html#parameter-callbacks