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
|
#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# test_timestamp09.py
# Timestamps: API
#
from suite_subprocess import suite_subprocess
import wiredtiger, wttest
class test_timestamp09(wttest.WiredTigerTestCase, suite_subprocess):
tablename = 'test_timestamp09'
uri = 'table:' + tablename
def test_timestamp_api(self):
self.session.create(self.uri, 'key_format=i,value_format=i')
c = self.session.open_cursor(self.uri)
# Begin by adding some data.
self.session.begin_transaction()
c[1] = 1
self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(1))
# In a single transaction it is illegal to set a commit timestamp
# older than the first commit timestamp used for this transaction.
# Check both timestamp_transaction and commit_transaction APIs.
self.session.begin_transaction()
self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(3))
c[3] = 3
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(2)),
'/older than the first commit timestamp/')
self.session.rollback_transaction()
self.session.begin_transaction()
self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(4))
c[4] = 4
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(3)),
'/older than the first commit timestamp/')
# Commit timestamp >= Oldest timestamp
# Check both timestamp_transaction and commit_transaction APIs.
self.session.begin_transaction()
c[3] = 3
self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(3))
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(3))
self.session.begin_transaction()
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(2)),
'/less than the oldest timestamp/')
self.session.rollback_transaction()
self.session.begin_transaction()
c[2] = 2
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(2)),
'/less than the oldest timestamp/')
self.session.begin_transaction()
c[4] = 4
self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(4))
# Oldest timestamp <= Stable timestamp and both oldest and stable
# timestamp should proceed forward.
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.conn.set_timestamp('oldest_timestamp=' +
self.timestamp_str(3) + ',stable_timestamp=' + self.timestamp_str(1)),
'/oldest timestamp \(0, 3\) must not be later than stable timestamp \(0, 1\)/')
# Oldest timestamp is 3 at the moment, trying to set it to an earlier
# timestamp is a no-op.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(1))
self.assertTimestampsEqual(\
self.conn.query_timestamp('get=oldest_timestamp'), self.timestamp_str(3))
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(3) +
',stable_timestamp=' + self.timestamp_str(3))
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(5))
# Stable timestamp is 5 at the moment, trying to set it to an earlier
# timestamp is a no-op.
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(4))
self.assertTimestampsEqual(\
self.conn.query_timestamp('get=stable_timestamp'), self.timestamp_str(5))
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(5))
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.conn.set_timestamp('oldest_timestamp=' +
self.timestamp_str(6)),
'/oldest timestamp \(0, 6\) must not be later than stable timestamp \(0, 5\)/')
# Commit timestamp > Stable timestamp.
# Check both timestamp_transaction and commit_transaction APIs.
# Oldest and stable timestamp are set to 5 at the moment.
self.session.begin_transaction()
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(5)),
'/must be after the stable timestamp/')
self.session.rollback_transaction()
self.session.begin_transaction()
c[5] = 5
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(5)),
'/must be after the stable timestamp/')
# When explicitly set, commit timestamp for a transaction can be earlier
# than the commit timestamp of an earlier transaction.
self.session.begin_transaction()
c[6] = 6
self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(6))
self.session.begin_transaction()
c[8] = 8
self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(8))
self.session.begin_transaction()
c[7] = 7
self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(7))
# Read timestamp >= oldest timestamp
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(7) +
',stable_timestamp=' + self.timestamp_str(7))
if wiredtiger.standalone_build():
self.assertRaisesException(wiredtiger.WiredTigerError, lambda:
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(6)))
else:
# This is a MongoDB message, not written in standalone builds.
with self.expectedStdoutPattern('less than the oldest timestamp'):
self.assertRaisesException(wiredtiger.WiredTigerError, lambda:
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(6)))
# c[8] is not visible at read_timestamp < 8
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(7))
self.assertEqual(c[6], 6)
self.assertEqual(c[7], 7)
c.set_key(8)
self.assertEqual(c.search(), wiredtiger.WT_NOTFOUND)
self.session.commit_transaction()
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(8))
self.assertEqual(c[6], 6)
self.assertEqual(c[7], 7)
self.assertEqual(c[8], 8)
self.assertTimestampsEqual(
self.conn.query_timestamp('get=oldest_reader'), self.timestamp_str(8))
self.session.commit_transaction()
# We can move the oldest timestamp backwards with "force"
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(5) + ',force')
if wiredtiger.standalone_build():
self.assertRaisesException(wiredtiger.WiredTigerError, lambda:
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(4)))
else:
# This is a MongoDB message, not written in standalone builds.
with self.expectedStdoutPattern('less than the oldest timestamp'):
self.assertRaisesException(wiredtiger.WiredTigerError, lambda:
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(4)))
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(6))
self.assertTimestampsEqual(
self.conn.query_timestamp('get=oldest_reader'), self.timestamp_str(6))
self.session.commit_transaction()
if __name__ == '__main__':
wttest.run()
|
