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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.
from helper import copy_wiredtiger_home
import os
import wiredtiger, wttest
# test_bug018.py
# JIRA WT-3590: if writing table data fails during close then tables
# that were updated within the same transaction could get out of sync with
# each other.
class test_bug018(wttest.WiredTigerTestCase):
'''Test closing/reopening/recovering tables when writes fail'''
conn_config = 'log=(enabled)'
def setUp(self):
# This test uses Linux-specific code so skip on any other system.
if os.name != 'posix' or os.uname()[0] != 'Linux':
self.skipTest('Linux-specific test skipped on ' + os.name)
super(test_bug018, self).setUp()
def create_table(self, uri):
self.session.create(uri, 'key_format=S,value_format=S')
return self.session.open_cursor(uri)
def test_bug018(self):
'''Test closing multiple tables'''
basename = 'bug018.'
baseuri = 'file:' + basename
c1 = self.create_table(baseuri + '01.wt')
c2 = self.create_table(baseuri + '02.wt')
self.session.begin_transaction()
c1['key'] = 'value'
c2['key'] = 'value'
self.session.commit_transaction()
# Simulate a write failure by closing the file descriptor for the second
# table out from underneath WiredTiger. We do this right before
# closing the connection so that the write error happens during close
# when writing out the final data. Allow table 1 to succeed and force
# an error writing out table 2.
#
# This is Linux-specific code to figure out the file descriptor.
for f in os.listdir('/proc/self/fd'):
try:
if os.readlink('/proc/self/fd/' + f).endswith(basename + '02.wt'):
os.close(int(f))
except OSError:
pass
# Expect an error and messages, so turn off stderr checking.
with self.expectedStderrPattern(''):
try:
self.close_conn()
except wiredtiger.WiredTigerError:
self.conn = None
# Make a backup for forensics in case something goes wrong.
backup_dir = 'BACKUP'
copy_wiredtiger_home('.', backup_dir, True)
# After reopening and running recovery both tables should be in
# sync even though table 1 was successfully written and table 2
# had an error on close.
self.open_conn()
c1 = self.session.open_cursor(baseuri + '01.wt')
c2 = self.session.open_cursor(baseuri + '02.wt')
self.assertEqual(list(c1), list(c2))
if __name__ == '__main__':
wttest.run()
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