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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 fnmatch, os, shutil, time
from helper import simulate_crash_restart
from test_rollback_to_stable01 import test_rollback_to_stable_base
from wiredtiger import stat
from wtdataset import SimpleDataSet
from wtscenario import make_scenarios
def timestamp_str(t):
return '%x' % t
# test_rollback_to_stable18.py
# Test the rollback to stable shouldn't skip any pages that don't have aggregated time window.
class test_rollback_to_stable18(test_rollback_to_stable_base):
session_config = 'isolation=snapshot'
key_format_values = [
('column', dict(key_format='r')),
('integer_row', dict(key_format='i')),
]
prepare_values = [
('no_prepare', dict(prepare=False)),
('prepare', dict(prepare=True))
]
scenarios = make_scenarios(key_format_values, prepare_values)
def conn_config(self):
config = 'cache_size=50MB,in_memory=true,statistics=(all),log=(enabled=false),eviction_dirty_trigger=5,eviction_updates_trigger=5'
return config
def test_rollback_to_stable(self):
nrows = 10000
# Prepare transactions for column store table is not yet supported.
if self.prepare and self.key_format == 'r':
self.skipTest('Prepare transactions for column store table is not yet supported')
# Create a table without logging.
uri = "table:rollback_to_stable18"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format="S", config='log=(enabled=false)')
ds.populate()
# Pin oldest and stable to timestamp 10.
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(10) +
',stable_timestamp=' + timestamp_str(10))
value_a = "aaaaa" * 100
# Perform several updates.
self.large_updates(uri, value_a, ds, nrows, self.prepare, 20)
# Perform several removes.
self.large_removes(uri, ds, nrows, self.prepare, 30)
# Verify data is visible and correct.
self.check(value_a, uri, nrows, 20)
self.check(None, uri, 0, 30)
# Configure debug behavior on a cursor to evict the page positioned on when the reset API is used.
evict_cursor = self.session.open_cursor(uri, None, "debug=(release_evict)")
# Search for the key so we position our cursor on the page that we want to evict.
evict_cursor.set_key(1)
evict_cursor.search()
evict_cursor.reset()
evict_cursor.close()
# Pin stable and oldest to timestamp 30 if prepare otherwise 20.
if self.prepare:
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(30) +
',stable_timestamp=' + timestamp_str(30))
else:
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(20) +
',stable_timestamp=' + timestamp_str(20))
# Perform rollback to stable.
self.conn.rollback_to_stable()
# Verify data is not visible.
self.check(value_a, uri, nrows, 30)
stat_cursor = self.session.open_cursor('statistics:', None, None)
calls = stat_cursor[stat.conn.txn_rts][2]
upd_aborted = stat_cursor[stat.conn.txn_rts_upd_aborted][2]
self.assertEqual(calls, 1)
self.assertEqual(upd_aborted, nrows)
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