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#!/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_timestamp16.py
# Test to ensure read timestamp is properly cleared at the
# end of a txn.
#
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_timestamp16(wttest.WiredTigerTestCase, suite_subprocess):
tablename = 'test_timestamp16'
uri = 'table:' + tablename
session_config = 'isolation=snapshot'
def test_read_timestamp_cleared(self):
# Ensure that the read timestamp doesn't move our checkpoint.
self.session.create(self.uri, 'key_format=i,value_format=i')
self.session.begin_transaction('read_timestamp=100')
self.session.rollback_transaction()
self.session.checkpoint('use_timestamp=true')
self.assertTimestampsEqual('0',
self.conn.query_timestamp('get=last_checkpoint'))
# Set a stable and make sure that we still checkpoint at
# the stable.
self.conn.set_timestamp('stable_timestamp=1')
self.session.begin_transaction('read_timestamp=100')
self.session.rollback_transaction()
self.session.checkpoint('use_timestamp=true')
self.assertTimestampsEqual('1',
self.conn.query_timestamp('get=last_checkpoint'))
# Finally make sure that commit also resets the read timestamp.
self.session.create(self.uri, 'key_format=i,value_format=i')
self.session.begin_transaction('read_timestamp=150')
self.session.commit_transaction()
self.session.checkpoint('use_timestamp=true')
self.assertTimestampsEqual('1',
self.conn.query_timestamp('get=last_checkpoint'))
if __name__ == '__main__':
wttest.run()
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