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
|
#!/usr/bin/env python
#
# Public Domain 2014-2019 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_prepare04.py
# Prepare: Update and read operations generate prepared conflict error.
#
import random
from suite_subprocess import suite_subprocess
import wiredtiger, wttest
from wtscenario import make_scenarios
def timestamp_str(t):
return '%x' % t
class test_prepare04(wttest.WiredTigerTestCase, suite_subprocess):
tablename = 'test_prepare_cursor'
uri = 'table:' + tablename
before_ts = timestamp_str(150)
prepare_ts = timestamp_str(200)
after_ts = timestamp_str(250)
types = [
('col', dict(extra_config=',log=(enabled=false),key_format=r')),
('lsm', dict(extra_config=',log=(enabled=false),type=lsm')),
('row', dict(extra_config=',log=(enabled=false)')),
]
# Various begin_transaction config
txncfg = [
('before_ts', dict(txn_config='isolation=snapshot,read_timestamp=' + before_ts, after_ts=False)),
('after_ts', dict(txn_config='isolation=snapshot,read_timestamp=' + after_ts, after_ts=True)),
('no_ts', dict(txn_config='isolation=snapshot', after_ts=True)),
]
preparecfg = [
('ignore_false', dict(ignore_config=',ignore_prepare=false', ignore=False)),
('ignore_true', dict(ignore_config=',ignore_prepare=true', ignore=True)),
]
conn_config = 'log=(enabled)'
scenarios = make_scenarios(types, txncfg, preparecfg)
def test_prepare_conflict(self):
self.session.create(self.uri,
'key_format=i,value_format=i' + self.extra_config)
c = self.session.open_cursor(self.uri)
# Insert keys 1..100 each with timestamp=key, in some order
orig_keys = range(1, 101)
keys = orig_keys[:]
random.shuffle(keys)
k = 1
self.session.begin_transaction()
c[k] = 1
self.session.commit_transaction('commit_timestamp=' + timestamp_str(100))
# Everything up to and including timestamp 100 has been committed.
self.assertTimestampsEqual(self.conn.query_timestamp(), timestamp_str(100))
# Bump the oldest timestamp, we're not going back...
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(100))
# make prepared updates.
k = 1
self.session.begin_transaction('isolation=snapshot')
c.set_key(1)
c.set_value(2)
c.update()
self.session.prepare_transaction('prepare_timestamp=' + self.prepare_ts)
conflictmsg = '/conflict between concurrent operations/'
preparemsg = '/conflict with a prepared update/'
#'''
# Verify data visibility from a different session/transaction.
s_other = self.conn.open_session()
c_other = s_other.open_cursor(self.uri, None)
s_other.begin_transaction(self.txn_config + self.ignore_config)
c_other.set_key(1)
if self.ignore == False and self.after_ts == True:
self.assertRaises(wiredtiger.WiredTigerError, lambda:c_other.search())
else:
c_other.search()
self.assertTrue(c_other.get_value() == 1)
c_other.set_value(3)
self.assertRaises(wiredtiger.WiredTigerError, lambda:c_other.update())
s_other.commit_transaction()
#'''
self.session.timestamp_transaction('commit_timestamp=' + timestamp_str(300))
self.session.timestamp_transaction('durable_timestamp=' + timestamp_str(300))
self.session.commit_transaction()
if __name__ == '__main__':
wttest.run()
|
