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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 test_rollback_to_stable01 import test_rollback_to_stable_base
from helper import simulate_crash_restart
from wtdataset import SimpleDataSet
from wtscenario import make_scenarios
# test_rollback_to_stable31.py
# Check what happens with RTS if you never set the stable timestamp.
class test_rollback_to_stable31(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')),
]
checkpoint_modes = [
('no-checkpoint', dict(checkpoint=False)),
('checkpoint', dict(checkpoint=True)),
]
rollback_modes = [
('runtime', dict(crash=False)),
('recovery', dict(crash=True)),
]
scenarios = make_scenarios(format_values, checkpoint_modes, rollback_modes)
def test_rollback_to_stable(self):
nrows = 10
# Create a table without logging.
uri = "table:rollback_to_stable31"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format=self.value_format,
config='log=(enabled=false)')
ds.populate()
if self.value_format == '8t':
value_a = 97
value_b = 98
value_c = 99
else:
value_a = "aaaaa" * 10
value_b = "bbbbb" * 10
value_c = "ccccc" * 10
# Do not set stable. (Don't set oldest either as it can't be later than stable.)
# Write aaaaaa to all the keys at time 10.
self.large_updates(uri, value_a, ds, nrows, False, 10)
# Write bbbbbb to all the keys at time 20.
self.large_updates(uri, value_b, ds, nrows, False, 20)
# Write cccccc to all the keys at time 30.
self.large_updates(uri, value_c, ds, nrows, False, 30)
# Optionally checkpoint.
if self.checkpoint:
self.session.checkpoint()
# Roll back, either via crashing or by explicit RTS.
if self.crash:
simulate_crash_restart(self, ".", "RESTART")
else:
self.conn.rollback_to_stable()
if self.crash:
if self.checkpoint:
# Recovery-time RTS does nothing when no stable timestamp is set.
self.check(0, uri, 0, nrows, 5)
self.check(value_a, uri, nrows, 0, 15)
self.check(value_b, uri, nrows, 0, 25)
self.check(value_c, uri, nrows, 0, 35)
else:
# If we crashed without a checkpoint, everything should disappear entirely.
self.check(0, uri, 0, 0, 5)
self.check(value_a, uri, 0, 0, 15)
self.check(value_b, uri, 0, 0, 25)
self.check(value_c, uri, 0, 0, 35)
else:
# With an explicit runtime RTS we roll back to 0, but the end of the FLCS table
# still moves forward.
self.check(0, uri, 0, nrows, 5)
self.check(value_a, uri, 0, nrows, 15)
self.check(value_b, uri, 0, nrows, 25)
self.check(value_c, uri, 0, nrows, 35)
if __name__ == '__main__':
wttest.run()
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