Tomoya Fujita

@tonynajjar sorry for being late to get back to you. we have know this situation, i did not use your example, but having more than 100 nodes generates the CPU...

> This will happen even if the subscriber hasn't technically completed its processing of the sample. Is this correct? I believe, as far as i can see from the doc,...

CC: @iuhilnehc-ynos @Barry-Xu-2018

> In the case of ROS 2, there are certain [QoS policies](https://docs.ros.org/en/humble/Concepts/About-Quality-of-Service-Settings.html#qos-policies) that can never be configured by XML, and where the settings from rclcpp will always be honored. @MiguelCompany...

CI: * Linux [](http://ci.ros2.org/job/ci_linux/20679/) * Linux-aarch64 [](http://ci.ros2.org/job/ci_linux-aarch64/15000/) * Windows [](http://ci.ros2.org/job/ci_windows/21375/)

@Yadunund can we merge this to iron?

> Note, can we add scope keywords are optionally supported in the doc section? im sorry, bad memory 😓 I think what i mean was to add an explanation in...

@clalancette @sloretz can you have a look when you have time?

NaN is not a valid JSON symbol http://json.org/, but there are several files use `json` format. e.g https://github.com/ros2/rosidl/blob/0775e1059638dc24e7d87c0b6b51bd2c8809d678/rosidl_generator_type_description/rosidl_generator_type_description/__init__.py#L476-L486 it would be nice to check if this does not break those...

> I tried the backport to humble; it got messy - seems like ROSIDL changed a ton. Do you have any recommendations on how I can be successful in getting...