Function libradicl::collate_temporary_bucket_twopass

pub fn collate_temporary_bucket_twopass<T: Read + Seek, U: Write>(
    reader: &mut BufReader<T>, 
    bct: &RadIntId, 
    umit: &RadIntId, 
    nrec: u32, 
    owriter: &Mutex<U>, 
    compress: bool, 
    cb_byte_map: &mut HashMap<u64, TempCellInfo, RandomState>
) -> usize

Given a BufReader<T> from which to read a set of records that should reside in the same collated bucket, this function will collate the records by cell barcode, filling them into a chunk of memory exactly as they will reside on disk. If compress is true the collated chunk will be compressed, and then the result will be written to the output guarded by owriter.