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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 wiredtiger, wttest, time
from wiredtiger import stat
from wtscenario import make_scenarios
def timestamp_str(t):
return '%x' % t
# test_hs10.py
# Verify modify read after eviction.
class test_hs10(wttest.WiredTigerTestCase):
conn_config = 'cache_size=2MB,statistics=(all),eviction=(threads_max=1)'
session_config = 'isolation=snapshot'
key_format_values = (
('column', dict(key_format='r')),
('int', dict(key_format='i'))
)
scenarios = make_scenarios(key_format_values)
def get_stat(self, stat):
stat_cursor = self.session.open_cursor('statistics:')
val = stat_cursor[stat][2]
stat_cursor.close()
return val
def test_modify_insert_to_hs(self):
uri = "table:test_hs10"
uri2 = "table:test_hs10_otherdata"
create_params = 'value_format=S,key_format={}'.format(self.key_format)
value1 = 'a' * 1000
value2 = 'b' * 1000
self.session.create(uri, create_params)
session2 = self.setUpSessionOpen(self.conn)
session2.create(uri2, create_params)
cursor2 = session2.open_cursor(uri2)
# Insert a full value.
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(1))
self.conn.set_timestamp('stable_timestamp=' + timestamp_str(1))
cursor = self.session.open_cursor(uri)
self.session.begin_transaction()
cursor[1] = value1
self.session.commit_transaction('commit_timestamp=' + timestamp_str(2))
# Insert 3 modifies in separate transactions.
self.session.begin_transaction()
cursor.set_key(1)
self.assertEqual(cursor.modify([wiredtiger.Modify('A', 1000, 1)]), 0)
self.session.commit_transaction('commit_timestamp=' + timestamp_str(3))
self.session.begin_transaction()
cursor.set_key(1)
self.assertEqual(cursor.modify([wiredtiger.Modify('B', 1001, 1)]), 0)
self.session.commit_transaction('commit_timestamp=' + timestamp_str(4))
self.session.begin_transaction()
cursor.set_key(1)
self.assertEqual(cursor.modify([wiredtiger.Modify('C', 1002, 1)]), 0)
self.session.commit_transaction('commit_timestamp=' + timestamp_str(5))
self.session.checkpoint()
# Insert a whole bunch of data into the other table to force wiredtiger to evict data
# from the previous table.
for i in range(1, 10000):
cursor2[i] = value2
# Validate that we see the correct value at each of the timestamps.
self.session.begin_transaction('read_timestamp=' + timestamp_str(3))
cursor.set_key(1)
cursor.search()
self.assertEqual(cursor[1], value1 + 'A')
self.session.commit_transaction()
cursor2 = self.session.open_cursor(uri)
self.session.begin_transaction('read_timestamp=' + timestamp_str(4))
cursor2.set_key(1)
cursor2.search()
self.assertEqual(cursor2.get_value(), value1 + 'AB')
self.session.commit_transaction()
self.session.begin_transaction('read_timestamp=' + timestamp_str(5))
self.assertEqual(cursor[1], value1 + 'ABC')
self.session.commit_transaction()
if __name__ == '__main__':
wttest.run()
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