1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
from __future__ import annotations
import asyncio
import queue
import random
from collections.abc import Iterator
from operator import add
from time import sleep
import pytest
from distributed.client import _as_completed, _first_completed, as_completed, wait
from distributed.metrics import time
from distributed.utils import CancelledError
from distributed.utils_test import gen_cluster, inc, throws
@gen_cluster(client=True)
async def test_as_completed_async(c, s, a, b):
x = c.submit(inc, 1)
y = c.submit(inc, 1)
z = c.submit(inc, 2)
q = queue.Queue()
await _as_completed([x, y, z], q)
assert q.qsize() == 3
assert {q.get(), q.get(), q.get()} == {x, y, z}
result = await _first_completed([x, y, z])
assert result in [x, y, z]
def test_as_completed_sync(client):
x = client.submit(inc, 1)
y = client.submit(inc, 2)
z = client.submit(inc, 1)
seq = as_completed([x, y, z])
assert seq.count() == 3
assert isinstance(seq, Iterator)
assert set(seq) == {x, y, z}
assert seq.count() == 0
assert list(as_completed([])) == []
def test_as_completed_with_non_futures(client):
with pytest.raises(TypeError):
list(as_completed([1, 2, 3]))
def test_as_completed_add(client):
total = 0
expected = sum(map(inc, range(10)))
futures = client.map(inc, range(10))
ac = as_completed(futures)
for future in ac:
result = future.result()
total += result
if random.random() < 0.5:
future = client.submit(add, future, 10)
ac.add(future)
expected += result + 10
assert total == expected
def test_as_completed_update(client):
total = 0
todo = list(range(10))
expected = sum(map(inc, todo))
ac = as_completed([])
while todo or not ac.is_empty():
if todo:
work, todo = todo[:4], todo[4:]
ac.update(client.map(inc, work))
batch = ac.next_batch(block=True)
total += sum(r.result() for r in batch)
assert total == expected
def test_as_completed_repeats(client):
ac = as_completed()
x = client.submit(inc, 1)
ac.add(x)
ac.add(x)
assert next(ac) is x
assert next(ac) is x
with pytest.raises(StopIteration):
next(ac)
ac.add(x)
assert next(ac) is x
def test_as_completed_is_empty(client):
ac = as_completed()
assert ac.is_empty()
x = client.submit(inc, 1)
ac.add(x)
assert not ac.is_empty()
assert next(ac) is x
assert ac.is_empty()
def test_as_completed_cancel(client):
x = client.submit(inc, 1)
y = client.submit(inc, 1)
ac = as_completed([x, y])
x.cancel()
assert next(ac) is x or y
assert next(ac) is y or x
with pytest.raises(queue.Empty):
ac.queue.get(timeout=0.1)
res = list(as_completed([x, y, x]))
assert len(res) == 3
assert set(res) == {x, y}
assert res.count(x) == 2
def test_as_completed_cancel_last(client):
w = client.submit(inc, 0.3)
x = client.submit(inc, 1)
y = client.submit(inc, 0.3)
async def _():
await asyncio.sleep(0.1)
await w.cancel(asynchronous=True)
await y.cancel(asynchronous=True)
client.loop.add_callback(_)
ac = as_completed([x, y])
result = set(ac)
assert result == {x, y}
@gen_cluster(client=True)
async def test_async_for_py2_equivalent(c, s, a, b):
futures = c.map(sleep, [0.01] * 3, pure=False)
seq = as_completed(futures)
x, y, z = [el async for el in seq]
assert x.done()
assert y.done()
assert z.done()
assert x.key != y.key
@gen_cluster(client=True)
async def test_as_completed_error_async(c, s, a, b):
x = c.submit(throws, 1)
y = c.submit(inc, 1)
ac = as_completed([x, y])
result = {el async for el in ac}
assert result == {x, y}
assert x.status == "error"
assert y.status == "finished"
def test_as_completed_error(client):
x = client.submit(throws, 1)
y = client.submit(inc, 1)
ac = as_completed([x, y])
result = set(ac)
assert result == {x, y}
assert x.status == "error"
assert y.status == "finished"
def test_as_completed_with_results(client):
x = client.submit(throws, 1)
y = client.submit(inc, 5)
z = client.submit(inc, 1)
ac = as_completed([x, y, z], with_results=True)
y.cancel()
with pytest.raises(RuntimeError) as exc:
res = list(ac)
assert str(exc.value) == "hello!"
@gen_cluster(client=True)
async def test_as_completed_with_results_async(c, s, a, b):
x = c.submit(throws, 1)
y = c.submit(inc, 5)
z = c.submit(inc, 1)
ac = as_completed([x, y, z], with_results=True)
await y.cancel()
with pytest.raises(RuntimeError) as exc:
async for _ in ac:
pass
assert str(exc.value) == "hello!"
def test_as_completed_with_results_no_raise(client):
x = client.submit(throws, 1)
y = client.submit(inc, 5)
z = client.submit(inc, 1)
ac = as_completed([x, y, z], with_results=True, raise_errors=False)
y.cancel()
res = list(ac)
dd = {r[0]: r[1:] for r in res}
assert dd.keys() == {x, y, z}
assert x.status == "error"
assert y.status == "cancelled"
assert z.status == "finished"
assert isinstance(dd[y][0], CancelledError) or dd[y][0] == 6
assert isinstance(dd[x][0][1], RuntimeError)
assert dd[z][0] == 2
@gen_cluster(client=True)
async def test_str(c, s, a, b):
futures = c.map(inc, range(3))
ac = as_completed(futures)
assert "waiting=3" in str(ac)
assert "waiting=3" in repr(ac)
assert "done=0" in str(ac)
assert "done=0" in repr(ac)
await ac.__anext__()
start = time()
while "done=2" not in str(ac):
await asyncio.sleep(0.01)
assert time() < start + 2
@gen_cluster(client=True)
async def test_as_completed_with_results_no_raise_async(c, s, a, b):
x = c.submit(throws, 1, key="x")
y = c.submit(inc, 5, key="y")
z = c.submit(inc, 1, key="z")
ac = as_completed([x, y, z], with_results=True, raise_errors=False)
await y.cancel()
res = [el async for el in ac]
dd = {r[0]: r[1:] for r in res}
assert set(dd.keys()) == {y, x, z}
assert x.status == "error"
assert y.status == "cancelled"
assert z.status == "finished"
assert isinstance(dd[y][0], CancelledError)
assert isinstance(dd[x][0][1], RuntimeError)
assert dd[z][0] == 2
@gen_cluster(client=True)
async def test_clear(c, s, a, b):
futures = c.map(inc, range(3))
ac = as_completed(futures)
await wait(futures)
ac.clear()
with pytest.raises(StopAsyncIteration):
await ac.__anext__()
del futures
while s.tasks:
await asyncio.sleep(0.3)
|
