It seems that the Pull Request you’re referring to is undefined, which means there are no details provided about it. In order to create a summary for the Pull Request in the Thanos project, I would need specific information such as:

• The purpose of the Pull Request (e.g., bug fix, new feature, performance improvement)
• A brief description of the changes made
• Any relevant context or motivation behind the changes
• Impact on existing functionality or performance
• Related issues or discussions
• Testing done as part of the PR

If you can provide more details about the Pull Request, I can help create a comprehensive summary tailored for advanced developers in the Thanos project.