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#!/usr/bin/env python
#
# Public Domain 2014-2019 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.
#
# test_bug010.py
# check that checkpoints don't leave files marked clean when they
# did not write all updates out.
#
import wiredtiger, wttest, wtthread
import threading, time
class test_bug010(wttest.WiredTigerTestCase):
name = 'test_bug010'
uri = 'table:' + name
num_tables = 2000 if wttest.islongtest() else 200
# Disable checkpoint sync, to make checkpoints faster and
# increase the likelihood of triggering the symptom
conn_config = 'checkpoint_sync=false'
def test_checkpoint_dirty(self):
# Create a lot of tables
# insert the same item in each
# Start a checkpoint with some of the updates
# Create another checkpoint that should contain all data consistently
# Read from the checkpoint and make sure the data is consistent
for i in range(0, self.num_tables):
self.printVerbose(3, 'Creating table ' + str(i))
self.session.create(self.uri + str(i),
'key_format=S,value_format=i')
c = self.session.open_cursor(self.uri + str(i), None)
c['a'] = 0
c.close()
self.session.checkpoint()
iterations = 1
expected_val = 0
for its in range(1, 10):
self.printVerbose(3, 'Doing iteration ' + str(its))
# Create a checkpoint thread
done = threading.Event()
ckpt = wtthread.checkpoint_thread(self.conn, done)
ckpt.start()
try:
expected_val += 1
for i in range(0, self.num_tables):
c = self.session.open_cursor(self.uri + str(i), None)
c['a'] = expected_val
c.close()
finally:
done.set()
ckpt.join()
# Execute another checkpoint, to make sure we have a consistent
# view of the data.
self.session.checkpoint()
for i in range(0, self.num_tables):
c = self.session.open_cursor(
self.uri + str(i), None, 'checkpoint=WiredTigerCheckpoint')
c.next()
self.assertEquals(c.get_value(), expected_val,
msg='Mismatch on iteration ' + str(its) +\
' for table ' + str(i))
c.close()
if __name__ == '__main__':
wttest.run()
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