It appears that your request references an “undefined Pull Request” for the Thanos project on GitHub. Unfortunately, without specific details about the changes proposed in the Pull Request—such as its title, description, the files affected, or the intended functionality—I’m unable to generate a meaningful summary.

To assist you better, please provide any available details about the Pull Request, including its objectives, main features, or issues it addresses. This information will allow me to create a comprehensive summary tailored for an advanced developer.