in ingester/src/progress.rs [113:124]
fn friendly_byte_units(mut size: u64) -> String {
const UNITS: &[&str] = &["B", "kB", "MB", "GB", "TB"];
const FACTOR: u64 = 1000;
let mut ind = 0;
while size > FACTOR {
size /= FACTOR;
ind += 1;
}
format!("{}{}", size, UNITS[ind])
}