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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
# test_bug013.py
# Test data consistency in LSM with updates. Ensure that overwrite
# cursors see all entries in the tree (i.e: they open cursors on all
# chunks in the LSM tree).
# See JIRA BF-829
class test_bug013(wttest.WiredTigerTestCase):
"""
Test LSM data consistency.
"""
uri = 'table:test_bug013'
def check_entries(self, keys):
# Test by iterating.
cursor = self.session.open_cursor(self.uri, None, None)
i = 0
for i1, i2, i3, v1 in cursor:
self.assertEqual( keys[i], [i1, i2, i3])
i += 1
cursor.close()
self.assertEqual(i, len(keys))
def test_lsm_consistency(self):
self.session.reconfigure("isolation=snapshot")
self.session.create(self.uri, 'key_format=iii,value_format=i,type=lsm')
cursor = self.session.open_cursor(self.uri, None, None)
cursor[(2, 6, 1)] = 0
cursor.close()
# Ensure the first chunk is flushed to disk, so the tree will have
# at least two chunks. Wrapped in a try, since it sometimes gets
# an EBUSY return
try:
self.session.verify(self.uri, None)
except wiredtiger.WiredTigerError:
pass
# Add a key
cursor = self.session.open_cursor(self.uri, None, 'overwrite=false')
cursor[(1, 5, 1)] = 0
cursor.close()
# Remove the key we just added. If the LSM code is broken, the
# search for the key we just inserted returns not found - so the
# key isn't actually removed.
cursor = self.session.open_cursor(self.uri, None, 'overwrite=false')
cursor.set_key((1, 5, 1))
cursor.remove()
cursor.close()
# Verify that the data is as we expect
self.check_entries([[2, 6, 1]])
if __name__ == '__main__':
wttest.run()
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