-
-
Notifications
You must be signed in to change notification settings - Fork 4.4k
/
test_lbview.py
211 lines (175 loc) · 6.53 KB
/
test_lbview.py
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
# -*- coding: utf-8 -*-
"""test LoadBalancedView objects
Authors:
* Min RK
"""
#-------------------------------------------------------------------------------
# Copyright (C) 2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
import sys
import time
import zmq
from nose import SkipTest
from nose.plugins.attrib import attr
from IPython import parallel as pmod
from IPython.parallel import error
from IPython.parallel.tests import add_engines
from .clienttest import ClusterTestCase, crash, wait, skip_without
def setup():
add_engines(3, total=True)
class TestLoadBalancedView(ClusterTestCase):
def setUp(self):
ClusterTestCase.setUp(self)
self.view = self.client.load_balanced_view()
@attr('crash')
def test_z_crash_task(self):
"""test graceful handling of engine death (balanced)"""
# self.add_engines(1)
ar = self.view.apply_async(crash)
self.assertRaisesRemote(error.EngineError, ar.get, 10)
eid = ar.engine_id
tic = time.time()
while eid in self.client.ids and time.time()-tic < 5:
time.sleep(.01)
self.client.spin()
self.assertFalse(eid in self.client.ids, "Engine should have died")
def test_map(self):
def f(x):
return x**2
data = range(16)
r = self.view.map_sync(f, data)
self.assertEqual(r, map(f, data))
def test_map_generator(self):
def f(x):
return x**2
data = range(16)
r = self.view.map_sync(f, iter(data))
self.assertEqual(r, map(f, iter(data)))
def test_map_short_first(self):
def f(x,y):
if y is None:
return y
if x is None:
return x
return x*y
data = range(10)
data2 = range(4)
r = self.view.map_sync(f, data, data2)
self.assertEqual(r, map(f, data, data2))
def test_map_short_last(self):
def f(x,y):
if y is None:
return y
if x is None:
return x
return x*y
data = range(4)
data2 = range(10)
r = self.view.map_sync(f, data, data2)
self.assertEqual(r, map(f, data, data2))
def test_map_unordered(self):
def f(x):
return x**2
def slow_f(x):
import time
time.sleep(0.05*x)
return x**2
data = range(16,0,-1)
reference = map(f, data)
amr = self.view.map_async(slow_f, data, ordered=False)
self.assertTrue(isinstance(amr, pmod.AsyncMapResult))
# check individual elements, retrieved as they come
# list comprehension uses __iter__
astheycame = [ r for r in amr ]
# Ensure that at least one result came out of order:
self.assertNotEqual(astheycame, reference, "should not have preserved order")
self.assertEqual(sorted(astheycame, reverse=True), reference, "result corrupted")
def test_map_ordered(self):
def f(x):
return x**2
def slow_f(x):
import time
time.sleep(0.05*x)
return x**2
data = range(16,0,-1)
reference = map(f, data)
amr = self.view.map_async(slow_f, data)
self.assertTrue(isinstance(amr, pmod.AsyncMapResult))
# check individual elements, retrieved as they come
# list(amr) uses __iter__
astheycame = list(amr)
# Ensure that results came in order
self.assertEqual(astheycame, reference)
self.assertEqual(amr.result, reference)
def test_map_iterable(self):
"""test map on iterables (balanced)"""
view = self.view
# 101 is prime, so it won't be evenly distributed
arr = range(101)
# so that it will be an iterator, even in Python 3
it = iter(arr)
r = view.map_sync(lambda x:x, arr)
self.assertEqual(r, list(arr))
def test_abort(self):
view = self.view
ar = self.client[:].apply_async(time.sleep, .5)
ar = self.client[:].apply_async(time.sleep, .5)
time.sleep(0.2)
ar2 = view.apply_async(lambda : 2)
ar3 = view.apply_async(lambda : 3)
view.abort(ar2)
view.abort(ar3.msg_ids)
self.assertRaises(error.TaskAborted, ar2.get)
self.assertRaises(error.TaskAborted, ar3.get)
def test_retries(self):
view = self.view
view.timeout = 1 # prevent hang if this doesn't behave
def fail():
assert False
for r in range(len(self.client)-1):
with view.temp_flags(retries=r):
self.assertRaisesRemote(AssertionError, view.apply_sync, fail)
with view.temp_flags(retries=len(self.client), timeout=0.25):
self.assertRaisesRemote(error.TaskTimeout, view.apply_sync, fail)
def test_invalid_dependency(self):
view = self.view
with view.temp_flags(after='12345'):
self.assertRaisesRemote(error.InvalidDependency, view.apply_sync, lambda : 1)
def test_impossible_dependency(self):
self.minimum_engines(2)
view = self.client.load_balanced_view()
ar1 = view.apply_async(lambda : 1)
ar1.get()
e1 = ar1.engine_id
e2 = e1
while e2 == e1:
ar2 = view.apply_async(lambda : 1)
ar2.get()
e2 = ar2.engine_id
with view.temp_flags(follow=[ar1, ar2]):
self.assertRaisesRemote(error.ImpossibleDependency, view.apply_sync, lambda : 1)
def test_follow(self):
ar = self.view.apply_async(lambda : 1)
ar.get()
ars = []
first_id = ar.engine_id
self.view.follow = ar
for i in range(5):
ars.append(self.view.apply_async(lambda : 1))
self.view.wait(ars)
for ar in ars:
self.assertEqual(ar.engine_id, first_id)
def test_after(self):
view = self.view
ar = view.apply_async(time.sleep, 0.5)
with view.temp_flags(after=ar):
ar2 = view.apply_async(lambda : 1)
ar.wait()
ar2.wait()
self.assertTrue(ar2.started >= ar.completed, "%s not >= %s"%(ar.started, ar.completed))