Created
July 26, 2024 07:52
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Node assigments
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| from typing import List, Set, TypeAlias, Sequence | |
| from itertools import cycle | |
| NodeId: TypeAlias = bytes | |
| def calculate_subnets(nodes_list: Sequence[NodeId], num_subnets: int, replication_factor: int) -> List[Set[NodeId]]: | |
| """ | |
| Calculate in which subnet(s) to place each node. | |
| Fills up each subnet up to a count in an iterative mode | |
| """ | |
| # key of dict is the subnet number | |
| nodes_list = sorted(nodes_list) | |
| nodes = cycle(nodes_list) | |
| subnets = [ | |
| set(next(nodes) for _ in range(replication_factor)) for _ in range(num_subnets) | |
| ] | |
| return subnets | |
| if __name__ == "__main__": | |
| import random | |
| from pprint import pprint | |
| number_of_columns = 4096 | |
| for size in [100, 500, 1000, 10000]: | |
| nodes_ids = [random.randbytes(32) for _ in range(size)] | |
| replication_factor = 3 | |
| print(size, replication_factor) | |
| print(calculate_subnets(nodes_ids, number_of_columns, replication_factor)) |
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