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#!/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_timestamp11.py
# Timestamps: mixed timestamp usage
#
from suite_subprocess import suite_subprocess
import wiredtiger, wttest
from wtscenario import make_scenarios
class test_timestamp11(wttest.WiredTigerTestCase, suite_subprocess):
session_config = 'isolation=snapshot'
format_values = [
('string-row', dict(key_format='S', value_format='S')),
('column', dict(key_format='r', value_format='S')),
('column-fix', dict(key_format='r', value_format='8t')),
]
scenarios = make_scenarios(format_values)
def test_timestamp_range(self):
base = 'timestamp11'
uri = 'file:' + base
format = 'key_format={},value_format={}'.format(self.key_format, self.value_format)
self.session.create(uri, format)
if self.key_format == 'r':
key = 1
key2 = 2
else:
key = 'key'
key2 = 'key2'
if self.value_format == '8t':
value2 = 200
value5 = 50
valueNOTS = 111
else:
value2 = 'value2'
value5 = 'value5'
valueNOTS = 'valueNOTS'
# Test that mixed timestamp usage where some transactions use timestamps
# and others don't behave in the expected way.
# Insert two data items at timestamp 2
c = self.session.open_cursor(uri)
self.session.begin_transaction()
self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(2))
c[key] = value2
c[key2] = value2
self.session.commit_transaction()
c.close()
#
# Modify one key without a timestamp and modify the other with a
# later timestamp.
#
c = self.session.open_cursor(uri)
self.session.begin_transaction()
self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(5))
c[key] = value5
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c[key2] = valueNOTS
self.session.commit_transaction()
c.close()
#
# Set the stable timestamp and then roll back to it. The first key
# should roll back to the original value and the second key should
# remain at the non-timestamped value. Also the non-timestamped value
# stays regardless of rollbacks or reading at a timestamp.
#
stable_ts = self.timestamp_str(2)
self.conn.set_timestamp('stable_timestamp=' + stable_ts)
self.session.checkpoint()
self.conn.rollback_to_stable()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
self.assertEquals(c[key], value2)
self.assertEquals(c[key2], valueNOTS)
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction('read_timestamp=' + stable_ts)
self.assertEquals(c[key], value2)
self.assertEquals(c[key2], valueNOTS)
self.session.commit_transaction()
c.close()
#
# Repeat but swapping the keys using or not using timestamps.
#
c = self.session.open_cursor(uri)
self.session.begin_transaction()
self.session.timestamp_transaction(
'commit_timestamp=' + self.timestamp_str(5))
c[key2] = value5
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c[key] = valueNOTS
self.session.commit_transaction()
c.close()
# Read with each timestamp and without any timestamp.
#
# Without a timestamp. We should see the latest value for each.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
self.assertEquals(c[key], valueNOTS)
self.assertEquals(c[key2], value5)
self.session.commit_transaction()
c.close()
# With timestamp 2. Both non-timestamped values override the original
# value at timestamp 2.
c = self.session.open_cursor(uri)
self.session.begin_transaction('read_timestamp=' + stable_ts)
self.assertEquals(c[key], valueNOTS)
self.assertEquals(c[key2], valueNOTS)
self.session.commit_transaction()
c.close()
# With timestamp 5. We rolled back the first one and never re-inserted
# one at that timestamp and inserted without a timestamp. For the second
# we inserted at timestamp 5 after the non-timestamped insert.
c = self.session.open_cursor(uri)
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(5))
self.assertEquals(c[key], valueNOTS)
self.assertEquals(c[key2], value5)
self.session.commit_transaction()
c.close()
if __name__ == '__main__':
wttest.run()
|
