pub fn names(root: &Path, from: i64, to: i64) -> Result<Results>Expand description
Every metric name present in the window, with its unit and kind.
This is what a UI puts in a dropdown and what an agent reads before writing
its first query, so it is a first-class endpoint rather than something to
derive from an unfiltered series call — the descriptor table is tens of
rows per block, while the points it describes are hundreds of thousands.