Struct PartInfo 

pub(crate) struct PartInfo {
    pub(crate) path: PathBuf,
    pub(crate) group: usize,
    pub(crate) windows: BTreeSet<i64>,
}

What was learned about one original part file in the first pass.

Fields

path: PathBuf

Path of the part file.

group: usize

Index into the folder’s list of distinct key-value metadata.

windows: BTreeSet<i64>

Windows (see window_of) that at least one of the file’s rows falls in.