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#!/usr/bin/env python
#
# Public Domain 2014-2017 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
from wtdataset import SimpleDataSet, simple_key, simple_value
from wtscenario import make_scenarios
# test_colgap.py
# Test variable-length column-store gap performance.
class test_column_store_gap(wttest.WiredTigerTestCase):
nentries = 13
# Cursor forward
def forward(self, cursor, expected):
cursor.reset()
i = 0
while True:
if cursor.next() != 0:
break
self.assertEqual(cursor.get_key(), expected[i])
i += 1
self.assertEqual(i, self.nentries)
# Cursor backward
def backward(self, cursor, expected):
cursor.reset()
i = 0
while True:
if cursor.prev() != 0:
break
self.assertEqual(cursor.get_key(), expected[i])
i += 1
self.assertEqual(i, self.nentries)
# Create a variable-length column-store table with really big gaps in the
# namespace. If this runs in less-than-glacial time, it's working.
def test_column_store_gap(self):
uri = 'table:gap'
# Initially just create tables.
ds = SimpleDataSet(self, uri, 0, key_format='r')
ds.populate()
cursor = self.session.open_cursor(uri, None, None)
self.nentries = 0
# Create a column-store table with large gaps in the name-space.
v = [ 1000, 2000000000000, 30000000000000 ]
for i in v:
cursor[ds.key(i)] = ds.value(i)
self.nentries += 1
# In-memory cursor forward, backward.
self.forward(cursor, v)
self.backward(cursor, list(reversed(v)))
self.reopen_conn()
cursor = self.session.open_cursor(uri, None, None)
# Disk page cursor forward, backward.
self.forward(cursor, v)
self.backward(cursor, list(reversed(v)))
def test_column_store_gap_traverse(self):
uri = 'table:gap'
# Initially just create tables.
ds = SimpleDataSet(self, uri, 0, key_format='r')
ds.populate()
cursor = self.session.open_cursor(uri, None, None)
self.nentries = 0
# Create a column store with key gaps. The particular values aren't
# important, we just want some gaps.
v = [ 1000, 1001, 2000, 2001]
for i in v:
cursor[ds.key(i)] = ds.value(i)
self.nentries += 1
# In-memory cursor forward, backward.
self.forward(cursor, v)
self.backward(cursor, list(reversed(v)))
self.reopen_conn()
cursor = self.session.open_cursor(uri, None, None)
# Disk page cursor forward, backward.
self.forward(cursor, v)
self.backward(cursor, list(reversed(v)))
# Insert some new records, so there are in-memory updates and an
# on disk image. Put them in the middle of the existing values
# so the traversal walks to them.
v2 = [ 1500, 1501 ]
for i in v2:
cursor[ds.key(i)] = ds.value(i)
self.nentries += 1
# Tell the validation what to expect.
v = [ 1000, 1001, 1500, 1501, 2000, 2001 ]
self.forward(cursor, v)
self.backward(cursor, list(reversed(v)))
# Basic testing of variable-length column-store with big records.
class test_colmax(wttest.WiredTigerTestCase):
name = 'test_colmax'
types = [
('file', dict(type='file:')),
('table', dict(type='table:'))
]
valfmt = [
('integer', dict(valfmt='i')),
('string', dict(valfmt='S')),
]
record_number = [
('big', dict(recno=18446744073709551606)),
('max', dict(recno=18446744073709551615)),
]
bulk = [
('bulk', dict(bulk=1)),
('not-bulk', dict(bulk=0)),
]
reopen = [
('reopen', dict(reopen=1)),
('not-reopen', dict(reopen=0)),
]
single = [
('single', dict(single=1)),
('not-single', dict(single=0)),
]
scenarios = make_scenarios(\
types, valfmt, record_number, bulk, reopen, single)
# Test that variable-length column-store correctly/efficiently handles big
# records (if it's not efficient, we'll just hang).
def test_colmax_op(self):
recno = self.recno
uri = self.type + self.name
self.session.create(uri, 'key_format=r' +',value_format=' + self.valfmt)
# Insert a big record with/without a bulk cursor.
bulk_config = ""
if self.bulk:
bulk_config = "bulk"
cursor = self.session.open_cursor(uri, None, bulk_config)
# Optionaly make the big record the only record in the table.
if not self.single:
for i in range(1, 723):
cursor[simple_key(cursor, i)] = simple_value(cursor, i)
# Confirm searching past the end of the table works.
if not self.bulk:
cursor.set_key(recno)
self.assertEqual(cursor.search(), wiredtiger.WT_NOTFOUND)
# Insert the big record.
cursor[simple_key(cursor, recno)] = simple_value(cursor, recno)
# Optionally flush to disk; re-open the cursor as necessary.
if self.bulk or self.reopen:
cursor.close()
if self.reopen == 1:
self.reopen_conn()
if self.bulk or self.reopen:
cursor = self.session.open_cursor(uri, None, None)
# Search for the large record.
cursor.set_key(recno)
self.assertEqual(cursor.search(), 0)
self.assertEqual(cursor.get_value(), simple_value(cursor, recno))
# Update it.
cursor[simple_key(cursor, recno)] = simple_value(cursor, 37)
cursor.set_key(recno)
self.assertEqual(cursor.search(), 0)
self.assertEqual(cursor.get_value(), simple_value(cursor, 37))
# Remove it.
cursor.set_key(recno)
self.assertEqual(cursor.remove(), 0)
cursor.set_key(simple_key(cursor, recno))
self.assertEqual(cursor.search(), wiredtiger.WT_NOTFOUND)
if __name__ == '__main__':
wttest.run()
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