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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 fnmatch, os, shutil, threading, time
from wtthread import checkpoint_thread, op_thread
from helper import copy_wiredtiger_home
import wiredtiger, wttest
from wtdataset import SimpleDataSet
from wtscenario import make_scenarios
from wiredtiger import stat
# test_compress02.py
# This test checks that the compression level can be reconfigured after restart if
# we are using zstd as the block compressor. Tables created before reconfiguration
# will still use the previous compression level.
#
class test_compress02(wttest.WiredTigerTestCase):
# Create a table.
uri = "table:test_compress02"
nrows = 1000
def conn_config(self):
config = 'builtin_extension_config={zstd={compression_level=6}},cache_size=10MB,log=(enabled=true)'
return config
def large_updates(self, uri, value, ds, nrows):
# Update a large number of records.
session = self.session
cursor = session.open_cursor(uri)
for i in range(0, nrows):
session.begin_transaction()
cursor[ds.key(i)] = value
session.commit_transaction()
cursor.close()
def check(self, check_value, uri, nrows):
session = self.session
session.begin_transaction()
cursor = session.open_cursor(uri)
count = 0
for k, v in cursor:
self.assertEqual(v, check_value)
count += 1
session.commit_transaction()
self.assertEqual(count, nrows)
# Load the compression extension, skip the test if missing
def conn_extensions(self, extlist):
extlist.skip_if_missing = True
extlist.extension('compressors', 'zstd')
@wttest.zstdtest('Skip zstd on pcc and zseries machines')
def test_compress02(self):
ds = SimpleDataSet(self, self.uri, 0, key_format="S", value_format="S",config='block_compressor=zstd,log=(enabled=false)')
ds.populate()
valuea = "aaaaa" * 100
cursor = self.session.open_cursor(self.uri)
self.large_updates(self.uri, valuea, ds, self.nrows)
self.check(valuea, self.uri, self.nrows)
self.session.checkpoint()
#Simulate a crash by copying to a new directory(RESTART).
copy_wiredtiger_home(self, ".", "RESTART")
# Close the connection and reopen it with a different zstd compression level configuration.
restart_config = 'builtin_extension_config={zstd={compression_level=9}},cache_size=10MB,log=(enabled=true)'
self.close_conn()
self.reopen_conn("RESTART", restart_config)
# Open the new directory.
self.session = self.setUpSessionOpen(self.conn)
# Check the table contains the last checkpointed value.
self.check(valuea, self.uri, self.nrows)
if __name__ == '__main__':
wttest.run()
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