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# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
#
import time
from cc_net import jsonql, regroup
def check_regroup(tmp_path, regroup_fn, check_blocks_boundaries=False):
n_shards = 4
n_docs = 20
shards = [
[dict(id=i, shard=s, raw_content="hello world") for i in range(n_docs)]
for s in range(n_shards)
]
shards_files = [tmp_path / f"{s:04d}.json.gz" for s in range(n_shards)]
for shard, shard_file in zip(shards, shards_files):
jsonql.run_pipes(inputs=shard, output=shard_file)
regroup_file = tmp_path / "regroup.json.gz"
start = time.time()
regroup_fn(shards_files, regroup_file)
duration = time.time() - start
print(f"{regroup_fn.__module__}.{regroup_fn.__name__} took {duration}s")
regrouped = list(jsonql.read_jsons(regroup_file))
assert [doc for shard in shards for doc in shard] == regrouped
readers = jsonql.get_block_readers(regroup_file, n_shards)
if not check_blocks_boundaries:
assert [doc for shard in shards for doc in shard] == [
doc for reader in readers for doc in jsonql.read_jsons(reader)
]
return
for shard, reader in zip(shards, readers):
block = [doc for doc in jsonql.read_jsons(reader)]
assert shard == block
def test_regroup(tmp_path):
# With regroup boundaries will be every 256Mb.
check_regroup(tmp_path, regroup.reshard, check_blocks_boundaries=False)
def test_fast_regroup(tmp_path):
# With fast regroup boundaries should match the shards.
check_regroup(tmp_path, regroup.fast_reshard, check_blocks_boundaries=True)
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