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
|
#!/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_timestamp13.py
# Timestamps: session query_timestamp
#
from suite_subprocess import suite_subprocess
import wiredtiger, wttest
from wtscenario import make_scenarios
class test_timestamp13(wttest.WiredTigerTestCase, suite_subprocess):
tablename = 'test_timestamp13'
uri = 'table:' + tablename
scenarios = make_scenarios([
('col', dict(extra_config=',key_format=r')),
('col-fix', dict(extra_config=',key_format=r,value_format=8t')),
('lsm', dict(extra_config=',type=lsm')),
('row', dict(extra_config='')),
])
def test_degenerate_timestamps(self):
self.session.create(self.uri,
'key_format=i,value_format=i' + self.extra_config)
query_choices = ['commit', 'first_commit', 'prepare', 'read']
# Querying a session's timestamps when not in a transaction returns not-set values.
for query in query_choices:
self.assertEqual(self.session.query_timestamp('get=' + query), "0")
self.session.begin_transaction()
# Nothing has been set, all queries will return timestamp 0.
for query in query_choices:
self.assertTimestampsEqual(
self.session.query_timestamp('get=' + query), '0')
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError,
lambda: self.session.query_timestamp('get=unknown'),
'/not a permitted choice for key/')
self.session.rollback_transaction()
# Querying a session's timestamps when not in a transaction will return 0.
for query in query_choices:
self.assertEqual(self.session.query_timestamp('get=' + query), '0')
def test_query_read_commit_timestamps(self):
self.session.create(self.uri,
'key_format=i,value_format=i' + self.extra_config)
self.session.begin_transaction()
self.session.timestamp_transaction('read_timestamp=10')
self.assertTimestampsEqual(
self.session.query_timestamp('get=read'), '10')
# The first commit_timestamp will set both the commit and first_commit
# values.
self.session.timestamp_transaction('commit_timestamp=20')
self.assertTimestampsEqual(
self.session.query_timestamp('get=commit'), '20')
self.assertTimestampsEqual(
self.session.query_timestamp('get=first_commit'), '20')
# The second commit_timestamp will update the commit value, leaving
# first_commit alone.
self.session.timestamp_transaction('commit_timestamp=30')
self.assertTimestampsEqual(
self.session.query_timestamp('get=commit'), '30')
self.assertTimestampsEqual(
self.session.query_timestamp('get=first_commit'), '20')
self.session.commit_transaction()
def test_query_round_read_timestamp(self):
self.session.create(self.uri,
'key_format=i,value_format=i' + self.extra_config)
self.conn.set_timestamp('oldest_timestamp=10')
# Rounding to the oldest timestamp will allow the stale read_timestamp
# to succeed. The follow-up call to get the read timestamp returns the
# chosen read timestamp.
self.session.begin_transaction('roundup_timestamps=(read=true)')
self.session.timestamp_transaction('read_timestamp=5')
self.assertTimestampsEqual(
self.session.query_timestamp('get=read'), '10')
# Moving the oldest timestamp has no bearing on the read timestamp
# returned.
self.conn.set_timestamp('oldest_timestamp=20')
self.assertTimestampsEqual(
self.session.query_timestamp('get=read'), '10')
self.session.commit_transaction()
def test_query_prepare_timestamp(self):
self.session.create(self.uri,
'key_format=i,value_format=i' + self.extra_config)
self.session.begin_transaction()
self.session.prepare_transaction('prepare_timestamp=10')
self.assertTimestampsEqual(
self.session.query_timestamp('get=prepare'), '10')
self.session.timestamp_transaction('commit_timestamp=20')
self.session.timestamp_transaction('durable_timestamp=20')
self.assertTimestampsEqual(
self.session.query_timestamp('get=prepare'), '10')
self.assertTimestampsEqual(
self.session.query_timestamp('get=commit'), '20')
self.session.commit_transaction()
|
