1256
1256
prefix_order.append(prefix)
1257
1257
return split_by_prefix, prefix_order
1259
def _group_keys_for_io(self, keys, non_local_keys, positions):
1259
def _group_keys_for_io(self, keys, non_local_keys, positions,
1260
1261
"""For the given keys, group them into 'best-sized' requests.
1262
1263
The idea is to avoid making 1 request per file, but to never try to