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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
from helper import copy_wiredtiger_home
import wiredtiger, wttest
from wtdataset import SimpleDataSet
from wtscenario import make_scenarios
from wiredtiger import stat
from helper import simulate_crash_restart
from test_rollback_to_stable01 import test_rollback_to_stable_base
# Test that rollback to stable does not open any dhandles that don't have unstable updates.
class test_rollback_to_stable20(test_rollback_to_stable_base):
session_config = 'isolation=snapshot'
key_format_values = [
('column', dict(key_format='r')),
('integer_row', dict(key_format='i')),
]
scenarios = make_scenarios(key_format_values)
def conn_config(self):
config = 'cache_size=50MB,statistics=(all)'
return config
def test_rollback_to_stable(self):
nrows = 10000
ntables = 100
create_params = 'key_format=i,value_format=S'
uri = "table:rollback_to_stable20"
ds = SimpleDataSet(
self, uri, 0, key_format=self.key_format, value_format="S", config='log=(enabled=false)')
ds.populate()
# Pin oldest and stable timestamp to 1.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(1) +
',stable_timestamp=' + self.timestamp_str(1))
valuea = "aaaaa" * 100
for i in range(0, ntables):
uri = 'table:rollback_to_stable20_' + str(i)
self.session.create(uri, create_params)
self.large_updates(uri, valuea, ds, nrows, 0, 10)
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(10))
self.session.checkpoint()
# Simulate a server crash and restart.
self.pr("restart")
simulate_crash_restart(self, ".", "RESTART")
self.pr("restart complete")
stat_cursor = self.session.open_cursor('statistics:', None, None)
open_dhandle_count = stat_cursor[stat.conn.dh_conn_handle_count][2]
stat_cursor.close()
self.assertLess(open_dhandle_count, 5)
if __name__ == '__main__':
wttest.run()
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