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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.
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
# test_rollback_to_stable13.py
# Test the rollback to stable should retain/restore the tombstone from
# the update list or from the history store for on-disk database.
class test_rollback_to_stable13(test_rollback_to_stable_base):
format_values = [
('column', dict(key_format='r', value_format='S')),
('column_fix', dict(key_format='r', value_format='8t')),
('row_integer', dict(key_format='i', value_format='S')),
]
prepare_values = [
('no_prepare', dict(prepare=False)),
('prepare', dict(prepare=True))
]
scenarios = make_scenarios(format_values, prepare_values)
def conn_config(self):
config = 'cache_size=50MB,statistics=(all),log=(enabled=true)'
return config
def test_rollback_to_stable(self):
nrows = 1000
# Create a table without logging.
uri = "table:rollback_to_stable13"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format=self.value_format,
config='split_pct=50,log=(enabled=false)')
ds.populate()
if self.value_format == '8t':
value_a = 97
value_b = 98
else:
value_a = "aaaaa" * 100
value_b = "bbbbb" * 100
# Pin oldest and stable to timestamp 10.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(10) +
',stable_timestamp=' + self.timestamp_str(10))
# 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)
# Perform several updates.
self.large_updates(uri, value_b, ds, nrows, self.prepare, 60)
# Verify data is visible and correct.
# (In FLCS, the removed rows should read back as zero.)
self.check(value_a, uri, nrows, None, 20)
self.check(None, uri, 0, nrows, 30)
self.check(value_b, uri, nrows, None, 60)
# Pin stable to timestamp 50 if prepare otherwise 40.
if self.prepare:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(50))
else:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(40))
self.session.checkpoint()
# Simulate a server crash and restart.
simulate_crash_restart(self, ".", "RESTART")
# Check that the correct data is seen at and after the stable timestamp.
self.check(None, uri, 0, nrows, 50)
# Check that we restore the correct value from the history store.
self.check(value_a, uri, nrows, None, 20)
stat_cursor = self.session.open_cursor('statistics:', None, None)
restored_tombstones = stat_cursor[stat.conn.txn_rts_hs_restore_tombstones][2]
self.assertEqual(restored_tombstones, nrows)
def test_rollback_to_stable_with_aborted_updates(self):
nrows = 1000
# Create a table without logging.
uri = "table:rollback_to_stable13"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format=self.value_format,
config='split_pct=50,log=(enabled=false)')
ds.populate()
if self.value_format == '8t':
value_a = 97
value_b = 98
value_c = 99
value_d = 100
else:
value_a = "aaaaa" * 100
value_b = "bbbbb" * 100
value_c = "ccccc" * 100
value_d = "ddddd" * 100
# Pin oldest and stable to timestamp 10.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(10) +
',stable_timestamp=' + self.timestamp_str(10))
# Perform several updates.
self.large_updates(uri, value_a, ds, nrows, self.prepare, 20)
# Update a large number of records and rollback.
cursor = self.session.open_cursor(uri)
for i in range(1, nrows + 1):
self.session.begin_transaction()
cursor[ds.key(i)] = value_b
self.session.rollback_transaction()
cursor.close()
# Update a large number of records and rollback.
cursor = self.session.open_cursor(uri)
for i in range(1, nrows + 1):
self.session.begin_transaction()
cursor[ds.key(i)] = value_c
self.session.rollback_transaction()
cursor.close()
# Perform several removes.
self.large_removes(uri, ds, nrows, self.prepare, 30)
# Perform several updates.
self.large_updates(uri, value_d, ds, nrows, self.prepare, 60)
# Verify data is visible and correct.
# (In FLCS, the removed rows should read back as zero.)
self.check(value_a, uri, nrows, None, 20)
self.check(None, uri, 0, nrows, 30)
self.check(value_d, uri, nrows, None, 60)
# Pin stable to timestamp 50 if prepare otherwise 40.
if self.prepare:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(50))
else:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(40))
self.session.checkpoint()
# Simulate a server crash and restart.
simulate_crash_restart(self, ".", "RESTART")
# Check that the correct data is seen at and after the stable timestamp.
self.check(None, uri, 0, nrows, 50)
# Check that we restore the correct value from the history store.
self.check(value_a, uri, nrows, None, 20)
stat_cursor = self.session.open_cursor('statistics:', None, None)
restored_tombstones = stat_cursor[stat.conn.txn_rts_hs_restore_tombstones][2]
self.assertEqual(restored_tombstones, nrows)
def test_rollback_to_stable_with_history_tombstone(self):
nrows = 1000
# Create a table without logging.
uri = "table:rollback_to_stable13"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format=self.value_format,
config='split_pct=50,log=(enabled=false)')
ds.populate()
if self.value_format == '8t':
value_a = 97
value_b = 98
value_c = 99
else:
value_a = "aaaaa" * 100
value_b = "bbbbb" * 100
value_c = "ccccc" * 100
# Pin oldest and stable to timestamp 10.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(10) +
',stable_timestamp=' + self.timestamp_str(10))
# 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)
# Perform several updates and removes in a single transaction.
cursor = self.session.open_cursor(uri)
for i in range(1, nrows + 1):
self.session.begin_transaction()
cursor[ds.key(i)] = value_b
cursor.set_key(ds.key(i))
cursor.remove()
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(40))
cursor.close()
# Pin stable to timestamp 50 if prepare otherwise 40.
if self.prepare:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(50))
else:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(40))
self.session.checkpoint()
# Perform several updates and checkpoint.
self.large_updates(uri, value_c, ds, nrows, self.prepare, 60)
self.session.checkpoint()
# Verify data is visible and correct.
# (In FLCS, the removed rows should read back as zero.)
self.check(value_a, uri, nrows, None, 20)
self.check(None, uri, 0, nrows, 40)
self.check(value_c, uri, nrows, None, 60)
# Simulate a server crash and restart.
simulate_crash_restart(self, ".", "RESTART")
# Check that the correct data is seen at and after the stable timestamp.
self.check(None, uri, 0, nrows, 50)
# Check that we restore the correct value from the history store.
self.check(value_a, uri, nrows, None, 20)
stat_cursor = self.session.open_cursor('statistics:', None, None)
restored_tombstones = stat_cursor[stat.conn.txn_rts_hs_restore_tombstones][2]
self.assertEqual(restored_tombstones, nrows)
def test_rollback_to_stable_with_stable_remove(self):
nrows = 1000
# Create a table without logging.
uri = "table:rollback_to_stable13"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format=self.value_format,
config='split_pct=50,log=(enabled=false)')
ds.populate()
if self.value_format == '8t':
value_a = 97
value_b = 98
value_c = 99
else:
value_a = "aaaaa" * 100
value_b = "bbbbb" * 100
value_c = "ccccc" * 100
# Pin oldest and stable to timestamp 10.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(10) +
',stable_timestamp=' + self.timestamp_str(10))
# Perform several updates.
self.large_updates(uri, value_a, ds, nrows, self.prepare, 20)
# Perform several updates.
self.large_updates(uri, value_b, ds, nrows, self.prepare, 30)
# Perform several removes.
self.large_removes(uri, ds, nrows, self.prepare, 40)
# Pin stable to timestamp 50 if prepare otherwise 40.
if self.prepare:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(50))
else:
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(40))
# Perform several updates and checkpoint.
self.large_updates(uri, value_c, ds, nrows, self.prepare, 60)
self.session.checkpoint()
# Verify data is visible and correct.
# (In FLCS, the removed rows should read back as zero.)
self.check(value_a, uri, nrows, None, 20)
self.check(None, uri, 0, nrows, 40)
self.check(value_c, uri, nrows, None, 60)
self.conn.rollback_to_stable()
# Perform several updates and checkpoint.
self.large_updates(uri, value_c, ds, nrows, self.prepare, 60)
self.session.checkpoint()
# Simulate a server crash and restart.
simulate_crash_restart(self, ".", "RESTART")
# Check that the correct data is seen at and after the stable timestamp.
self.check(None, uri, 0, nrows, 50)
# Check that we restore the correct value from the history store.
self.check(value_a, uri, nrows, None, 20)
stat_cursor = self.session.open_cursor('statistics:', None, None)
restored_tombstones = stat_cursor[stat.conn.txn_rts_hs_restore_tombstones][2]
self.assertEqual(restored_tombstones, nrows)
|
