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
|
#!/usr/bin/env python
#
# Public Domain 2014-2020 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_checkpoint08.py
# Test that the btree checkpoint is not skipped if there are obsolete pages.
import wiredtiger, wttest
from wiredtiger import stat
from wtdataset import SimpleDataSet
def timestamp_str(t):
return '%x' % t
class test_checkpoint08(wttest.WiredTigerTestCase):
conn_config = 'cache_size=50MB,log=(enabled),statistics=(all)'
session_config = 'isolation=snapshot'
def get_stat(self, uri):
stat_uri = 'statistics:' + uri
stat_cursor = self.session.open_cursor(stat_uri)
val = stat_cursor[stat.dsrc.btree_clean_checkpoint_timer][2]
stat_cursor.close()
return val
def test_checkpoint08(self):
self.uri1 = 'table:ckpt08.1'
self.file1 = 'file:ckpt08.1.wt'
self.uri2 = 'table:ckpt08.2'
self.file2 = 'file:ckpt08.2.wt'
self.hsfile = 'file:WiredTigerHS.wt'
self.session.create(self.uri1, 'key_format=i,value_format=i')
self.session.create(self.uri2, 'key_format=i,value_format=i')
# Pin oldest and stable to timestamp 1.
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(1) +
',stable_timestamp=' + timestamp_str(1))
# Setup: Insert some data and checkpoint it. Then modify only
# the data in the first table and checkpoint. Verify the clean skip
# timer is not set for the modified table and is set for the clean one.
c1 = self.session.open_cursor(self.uri1, None)
c2 = self.session.open_cursor(self.uri2, None)
self.session.begin_transaction()
c1[1] = 1
c2[1] = 1
self.session.commit_transaction('commit_timestamp=' + timestamp_str(2))
self.session.begin_transaction()
c1[1] = 10
c2[1] = 10
self.session.commit_transaction('commit_timestamp=' + timestamp_str(3))
self.conn.set_timestamp('stable_timestamp=' + timestamp_str(3))
self.session.checkpoint(None)
# Modify the both tables and reverify.
self.session.begin_transaction()
c1[3] = 3
c2[3] = 3
self.session.commit_transaction('commit_timestamp=' + timestamp_str(4))
self.conn.set_timestamp('stable_timestamp=' + timestamp_str(4))
self.session.checkpoint(None)
val = self.get_stat(self.uri1)
self.assertEqual(val, 0)
val = self.get_stat(self.uri2)
self.assertEqual(val, 0)
hsval = self.get_stat(self.hsfile)
self.assertNotEqual(hsval, 0)
# Modify the both tables and reverify when oldest timestamp moved.
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(4))
self.session.begin_transaction()
c1[4] = 4
c2[4] = 4
self.session.commit_transaction('commit_timestamp=' + timestamp_str(5))
self.conn.set_timestamp('stable_timestamp=' + timestamp_str(5))
self.session.checkpoint(None)
val = self.get_stat(self.uri1)
self.assertEqual(val, 0)
val = self.get_stat(self.uri2)
self.assertEqual(val, 0)
hsval = self.get_stat(self.hsfile)
self.assertEqual(hsval, 0)
stat_cursor = self.session.open_cursor('statistics:file:WiredTigerHS.wt', None, None)
obsolete_applied = stat_cursor[stat.dsrc.txn_checkpoint_obsolete_applied][2]
self.assertEqual(obsolete_applied, 1)
stat_cursor.close()
c1.close()
c2.close()
self.session.close()
if __name__ == '__main__':
wttest.run()
|
