Mercurial > p > roundup > code
view test/test_anydbm.py @ 7668:5b41018617f2
fix: out of memory error when importing under postgresql
If you try importing more than 20k items under postgresql you can run
out of memory:
psycopg2.errors.OutOfMemory: out of shared memory
HINT: You might need to increase max_locks_per_transaction.
Tuning memory may help, it's unknown at this point.
This checkin forces a commit to the postgres database after 10,000
rows have been added. This clears out the savepoints for each row and
starts a new transaction.
back_postgresql.py:
Implement commit mechanism in checkpoint_data(). Add two class level
attributes for tracking the number of savepoints and the limit when
the commit should happen.
roundup_admin.py:
implement pragma and dynamically create the config item
RDBMS_SAVEPOINT_LIMIT used by checkpoint_data.
Also fixed formatting of descriptions when using pragma list in
verbose mode.
admin_guide.txt, upgrading.txt:
Document change and use of pragma savepoint_limit in roundup-admin
for changing the default of 10,000.
test/db_test_base.py:
add some more asserts. In existing testAdminImportExport, set the
savepoint limit to 5 to test setting method and so that the commit
code will be run by existing tests. This provides coverage, but
does not actually test that the commit is done every 5 savepoints
8-(. The verification of every 5 savepoints was done manually
using a pdb breakpoint just before the commit.
acknowledgements.txt:
Added 2.4.0 section mentioning Norbert as he has done a ton of
testing with much larger datasets than I can test with.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Thu, 19 Oct 2023 16:11:25 -0400 |
| parents | 3f60a71b0812 |
| children |
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# # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/) # This module is free software, and you may redistribute it and/or modify # under the same terms as Python, so long as this copyright message and # disclaimer are retained in their original form. # # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS" # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE, # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. import unittest, os, shutil, time from roundup.backends import get_backend from .db_test_base import DBTest, ROTest, SchemaTest, ClassicInitTest, config from .db_test_base import HTMLItemTest, SpecialActionTest from .rest_common import TestCase as RestTestCase from roundup.anypy import strings class anydbmOpener: module = get_backend('anydbm') def nuke_database(self): shutil.rmtree(config.DATABASE) class anydbmDBTest(anydbmOpener, DBTest, unittest.TestCase): pass class anydbmROTest(anydbmOpener, ROTest, unittest.TestCase): pass class anydbmSchemaTest(anydbmOpener, SchemaTest, unittest.TestCase): pass class anydbmClassicInitTest(ClassicInitTest, unittest.TestCase): backend = 'anydbm' class anydbmHTMLItemTest(HTMLItemTest, unittest.TestCase): backend = 'anydbm' from .session_common import SessionTest class anydbmSessionTest(anydbmOpener, SessionTest, unittest.TestCase): s2b = lambda x,y: strings.s2b(y) def get_ts(self): return (self.sessions.get('random_session', '__timestamp'),) def testDbType(self): self.assertIn("back_anydbm", repr(self.db)) self.assertIn("roundup.backends.sessions_dbm.Sessions", repr(self.db.Session)) class anydbmSpecialActionTestCase(anydbmOpener, SpecialActionTest, unittest.TestCase): backend = 'anydbm' class anydbmRestTest (RestTestCase, unittest.TestCase): backend = 'anydbm' # vim: set filetype=python ts=4 sw=4 et si
