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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.
import time
import wiredtiger, wttest
from wtscenario import make_scenarios
# test_checkpoint06.py
# Verify that we rollback the truncation that is committed after stable
# timestamp in the checkpoint.
class test_checkpoint06(wttest.WiredTigerTestCase):
conn_config = 'create,cache_size=50MB'
format_values = [
('column-fix', dict(key_format='r', value_format='8t')),
('column', dict(key_format='r', value_format='S')),
('row_integer', dict(key_format='i', value_format='S')),
]
scenarios = make_scenarios(format_values)
def test_rollback_truncation_in_checkpoint(self):
self.uri = 'table:ckpt06'
config = 'key_format={},value_format={}'.format(self.key_format, self.value_format)
self.session.create(self.uri, config)
if self.value_format == '8t':
value = 72
else:
value = "abcdefghijklmnopqrstuvwxyz" * 3
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(1))
cursor = self.session.open_cursor(self.uri)
self.session.begin_transaction()
# Setup: Insert some data
for i in range(1, 10001):
cursor[i] = value
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(2))
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(2))
# Flush everything to disk
self.reopen_conn()
# Truncate large portion of the data in the table
self.session.begin_transaction()
start = self.session.open_cursor(self.uri)
start.set_key(5)
end = self.session.open_cursor(self.uri)
end.set_key(9995)
self.session.truncate(None, start, None, None)
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(3))
# Do a checkpoint
self.session.checkpoint()
# rollback to stable
self.reopen_conn()
# Verify the truncation is rolled back.
cursor = self.session.open_cursor(self.uri)
for i in range(1, 1001):
self.assertEqual(cursor[i], value)
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