fn map_to_hummock_value<'a>(
(key, op): (&'a TableKey<Bytes>, &'a KeyOp),
) -> (TableKey<&'a [u8]>, HummockValue<&'a [u8]>)
fn map_to_hummock_value<'a>(
(key, op): (&'a TableKey<Bytes>, &'a KeyOp),
) -> (TableKey<&'a [u8]>, HummockValue<&'a [u8]>)