wtf is fecoveragetool?

FeCoverageTool is a project with virtually no public documentation, its README contains only the project name and nothing else. This means we can only infer what it does from context clues like the repository name and the organization behind it, StarRocks, which is known for building a fast analytical database. Based on the name "FeCoverageTool," the "Fe" likely refers to "frontend," which in the StarRocks database architecture is the component that handles query parsing, planning, and metadata management. A "coverage tool" in software development is something that measures how much of your code is actually exercised by your tests, it helps developers see which lines or paths of code are being checked and which ones might have gaps. So this tool likely helps the StarRocks team measure test coverage for their frontend code. The people who would use this are developers working on the StarRocks database itself, specifically those writing or maintaining the frontend component. For example, if an engineer adds a new feature to how StarRocks plans a query, they might use this tool to confirm that their automated tests actually run the new code they wrote. It helps catch situations where code exists on paper but is never actually tested. The README doesn't go into any detail about how to install, configure, or run the tool, what specific language or testing framework it supports, or what output it produces. It also doesn't mention any dependencies, setup steps, or usage examples. Given the sparse documentation and the fact that the repository has minimal community attention, this appears to be an internal utility that was published publicly without much effort to make it self-service or accessible to outsiders. If you are not already contributing to StarRocks, this tool probably isn't something you'd pick up and use independently without reading the StarRocks source code itself.