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from __future__ import annotations
import os
import pytest
import awkward as ak
pytest.importorskip("pyarrow.parquet")
def generator(n):
arr = [
ak.Array(
[
{"x": 1.1, "y": [1], "z": [9, 0, 10]},
{"x": 2.2, "y": [1, 2], "z": [9, 11, 14]},
{"x": 3.3, "y": [1, 2, 3], "z": [12, 14]},
]
),
ak.Array(
[
{"x": 1.1, "y": [1], "z": [8]},
{"x": 2.2, "y": [1, 2], "z": [6, 2, 10]},
{"x": 3.3, "y": [1, 2, 3], "z": [9, 14]},
]
),
ak.Array(
[
{"x": 1.1, "y": [1], "z": [9, 11, 14]},
{"x": 4.4, "y": [1, 2, 3, 4], "z": [1, 14]},
{"x": 5.5, "y": [1, 2, 3, 4, 5], "z": [9]},
]
),
ak.Array(
[
{"x": 3.3, "y": [1, 4], "z": [9, 11, 14]},
{"x": 4.4, "y": [1], "z": [1]},
{"x": 5.5, "y": [1, 4, 5], "z": [9, 10]},
]
),
ak.Array(
[
{"x": 66.0, "y": [1, 2, 4], "z": [9, 11, 14]},
{"x": 4.4, "y": [1, 2], "z": [1, 14]},
{"x": 5.5, "y": [1, 2, 3, 4, 5], "z": [9, 2]},
]
),
]
for _ in range(n):
yield arr[_]
def test_simple(tmp_path):
filename = os.path.join(tmp_path, "whatever.parquet")
arr = [
ak.Array(
[
{"x": 1.1, "y": [1]},
{"x": 2.2, "y": [1, 2]},
{"x": 3.3, "y": [1, 2, 3]},
{"x": 1.8, "y": [3, 5, 6]},
{"x": 4.4, "y": [1, 2, 3, 4]},
{"x": 5.5, "y": [5, 3, 2, 6]},
]
),
ak.Array(
[
{"x": 1.1, "y": [1]},
{"x": 2.2, "y": [1, 2]},
{"x": 3.3, "y": [1, 2, 3]},
{"x": 4.4, "y": [1, 2, 3, 4]},
{"x": 1.8, "y": [3, 5, 6]},
{"x": 5.5, "y": [1, 2, 3, 4, 5]},
]
),
ak.Array(
[
{"x": 1.1, "y": [1]},
{"x": 4.4, "y": [1, 2, 3, 4]},
{"x": 5.5, "y": [1, 2, 3, 4, 5]},
{"x": 2.2, "y": [1, 2]},
{"x": 3.3, "y": [1, 2, 3]},
{"x": 1.8, "y": [3, 5, 6]},
]
),
]
check = ak.Array(
[
{"x": 1.1, "y": [1]},
{"x": 2.2, "y": [1, 2]},
{"x": 3.3, "y": [1, 2, 3]},
{"x": 1.8, "y": [3, 5, 6]},
{"x": 4.4, "y": [1, 2, 3, 4]},
{"x": 5.5, "y": [5, 3, 2, 6]},
{"x": 1.1, "y": [1]},
{"x": 2.2, "y": [1, 2]},
{"x": 3.3, "y": [1, 2, 3]},
{"x": 4.4, "y": [1, 2, 3, 4]},
{"x": 1.8, "y": [3, 5, 6]},
{"x": 5.5, "y": [1, 2, 3, 4, 5]},
{"x": 1.1, "y": [1]},
{"x": 4.4, "y": [1, 2, 3, 4]},
{"x": 5.5, "y": [1, 2, 3, 4, 5]},
{"x": 2.2, "y": [1, 2]},
{"x": 3.3, "y": [1, 2, 3]},
{"x": 1.8, "y": [3, 5, 6]},
]
)
iterator = (i for i in arr)
metadata = ak.to_parquet_row_groups(iterator, filename)
assert len(arr) == metadata.num_row_groups
data = ak.from_parquet(filename)
assert data.tolist() == check.tolist()
with pytest.raises(TypeError):
ak.to_parquet_row_groups(check, filename)
with pytest.raises(ValueError):
ak.to_parquet_row_groups([], filename)
def test_general(tmp_path):
filename = os.path.join(tmp_path, "whatever.parquet")
iterator = generator(3)
metadata = ak.to_parquet_row_groups(iterator, filename)
assert metadata.num_row_groups == 3
data = ak.from_parquet(filename)
assert len(data) == 9
assert data["x"].tolist() == [1.1, 2.2, 3.3, 1.1, 2.2, 3.3, 1.1, 4.4, 5.5]
assert data["y"].tolist() == [
[1],
[1, 2],
[1, 2, 3],
[1],
[1, 2],
[1, 2, 3],
[1],
[1, 2, 3, 4],
[1, 2, 3, 4, 5],
]
assert data["z"].tolist() == [
[9, 0, 10],
[9, 11, 14],
[12, 14],
[8],
[6, 2, 10],
[9, 14],
[9, 11, 14],
[1, 14],
[9],
]
def test_params(tmp_path):
filename = os.path.join(tmp_path, "whatever.parquet")
iterator = generator(5)
metadata = ak.to_parquet_row_groups(
iterator,
filename,
extensionarray=False,
count_nulls=False,
row_group_size=64 * 64 * 64,
)
assert metadata.num_row_groups == 5
data = ak.from_parquet(filename)
assert len(data) == 15
assert data["x"].tolist() == [
1.1,
2.2,
3.3,
1.1,
2.2,
3.3,
1.1,
4.4,
5.5,
3.3,
4.4,
5.5,
66.0,
4.4,
5.5,
]
assert data["y"].tolist() == [
[1],
[1, 2],
[1, 2, 3],
[1],
[1, 2],
[1, 2, 3],
[1],
[1, 2, 3, 4],
[1, 2, 3, 4, 5],
[1, 4],
[1],
[1, 4, 5],
[1, 2, 4],
[1, 2],
[1, 2, 3, 4, 5],
]
assert data["z"].tolist() == [
[9, 0, 10],
[9, 11, 14],
[12, 14],
[8],
[6, 2, 10],
[9, 14],
[9, 11, 14],
[1, 14],
[9],
[9, 11, 14],
[1],
[9, 10],
[9, 11, 14],
[1, 14],
[9, 2],
]
|
