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#!/usr/bin/env python
#
# Public Domain 2014-2016 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 helper import complex_populate, simple_populate, key_populate
from suite_subprocess import suite_subprocess
from wiredtiger import stat
from wtscenario import make_scenarios
# test_compact.py
# session level compact operation
class test_compact(wttest.WiredTigerTestCase, suite_subprocess):
name = 'test_compact'
# Use a small page size because we want to create lots of pages.
config = 'allocation_size=512,' +\
'leaf_page_max=512,value_format=S,key_format=S'
nentries = 50000
# The table is a complex object, give it roughly 5 pages per underlying
# file.
types = [
('file', dict(type='file:', pop=simple_populate, maxpages=5)),
('table', dict(type='table:', pop=complex_populate, maxpages=50))
]
compact = [
('method', dict(utility=0,reopen=0)),
('method_reopen', dict(utility=0,reopen=1)),
('utility', dict(utility=1,reopen=0)),
]
scenarios = make_scenarios(types, compact)
# We want a large cache so that eviction doesn't happen
# (which could skew our compaction results).
conn_config = 'cache_size=250MB,statistics=(all)'
# Test compaction.
def test_compact(self):
# Populate an object
uri = self.type + self.name
self.pop(self, uri, self.config, self.nentries - 1)
# Reopen the connection to force the object to disk.
self.reopen_conn()
# Confirm the tree starts big
stat_cursor = self.session.open_cursor('statistics:' + uri, None, None)
self.assertGreater(stat_cursor[stat.dsrc.btree_row_leaf][2], self.maxpages)
stat_cursor.close()
# Remove most of the object.
c1 = self.session.open_cursor(uri, None)
c1.set_key(key_populate(c1, 5))
c2 = self.session.open_cursor(uri, None)
c2.set_key(key_populate(c2, self.nentries - 5))
self.session.truncate(None, c1, c2, None)
c1.close()
c2.close()
# Compact it, using either the session method or the utility.
if self.utility == 1:
self.session.checkpoint(None)
self.close_conn()
self.runWt(["compact", uri])
else:
# Optionally reopen the connection so we do more on-disk tests.
if self.reopen == 1:
self.session.checkpoint(None)
self.reopen_conn()
self.session.compact(uri, None)
# Confirm compaction worked: check the number of on-disk pages
self.reopen_conn()
stat_cursor = self.session.open_cursor('statistics:' + uri, None, None)
self.assertLess(stat_cursor[stat.dsrc.btree_row_leaf][2], self.maxpages)
stat_cursor.close()
if __name__ == '__main__':
wttest.run()
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