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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 wttest
from wtscenario import make_scenarios
# test_hs16.py
# Ensure that we don't panic when inserting an update without timestamp to the history store.
class test_hs16(wttest.WiredTigerTestCase):
conn_config = 'cache_size=5MB'
format_values = (
('column', dict(key_format='r', value_format='S')),
('column-fix', dict(key_format='r', value_format='8t')),
('string-row', dict(key_format='S', value_format='S'))
)
scenarios = make_scenarios(format_values)
def create_key(self,i):
if self.key_format == 'S':
return str(i)
return i
def test_hs16(self):
uri = 'table:test_hs16'
create_params = 'key_format={}, value_format={}'.format(self.key_format, self.value_format)
self.session.create(uri, create_params)
cursor = self.session.open_cursor(uri)
if self.value_format == '8t':
valuea = 97 # 'a'
valueb = 98 # 'b'
valuec = 99 # 'c'
valued = 100 # 'd'
else:
valuea = 'a'
valueb = 'b'
valuec = 'c'
valued = 'd'
# Insert an update without timestamp
self.session.begin_transaction()
cursor[self.create_key(1)] = valuea
self.session.commit_transaction()
# Update an update at timestamp 1
self.session.begin_transaction()
cursor[self.create_key(1)] = valueb
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(1))
# Open anther session to make the next update without timestamp non-globally visible
session2 = self.setUpSessionOpen(self.conn)
cursor2 = session2.open_cursor(uri)
session2.begin_transaction()
cursor[self.create_key(2)] = valuea
# Update an update without timestamp
self.session.begin_transaction()
cursor[self.create_key(1)] = valuec
self.session.commit_transaction()
# Update an update at timestamp 2
self.session.begin_transaction()
cursor[self.create_key(1)] = valued
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(2))
# Do a checkpoint, it should not panic
self.session.checkpoint()
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