#!/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_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=2') self.session.begin_transaction('read_timestamp=100') self.session.rollback_transaction() self.session.checkpoint('use_timestamp=true') self.assertTimestampsEqual('2', 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('2', self.conn.query_timestamp('get=last_checkpoint')) if __name__ == '__main__': wttest.run()