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78 lines
2.4 KiB
Python
78 lines
2.4 KiB
Python
#coding:utf-8
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"""
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ID: issue-5665
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ISSUE: 5665
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TITLE: BUGCHECK 179 (decompression overran buffer) or unexpected lock conflict may
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happen during record versions backout
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DESCRIPTION:
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NOTE: bug can be reproduced only in SuperServer arch.
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We determine FB arch, and if it is SuperServer then change FW to OFF, add rows into table and
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perform statements that should raise internal FB CC.
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If no errors occures then ISQL log should contain number of affected rows.
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If internal FB CC will occur again then control will be returned to fbtest after ~2 minutes.
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For SS test lasts about 40 seconds, for SC/CS it should pass instantly because we SKIP entire test
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for both SC and CS architectures and just print 'OK' for matching expected_stdout.
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JIRA: CORE-5392
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FBTEST: bugs.core_5392
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"""
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import pytest
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from firebird.qa import *
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db = db_factory()
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act = python_act('db')
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ROWS_CNT = 100000
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expected_stdout = f"""
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Records affected: {ROWS_CNT}
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"""
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test_script = f"""
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create domain dm_longutf as varchar(8000) character set utf8;
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recreate table test (id int not null, a int);
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commit;
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set term ^;
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execute block as
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declare i int;
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declare n int = {ROWS_CNT}; -- (4.0 SS, page_size 8k: threshold is ~98000 records)
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begin
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while (n>0) do insert into test(id, a) values(:n, :n) returning :n-1 into n;
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end
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^
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set term ;^
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commit;
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alter table test add constraint pk_test primary key (id) using descending index pk_test_desc;
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commit;
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alter table test add b dm_longutf default '' not null;
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commit;
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update test set a=2;
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rollback;
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set count on;
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-- Following UPDATE statement leads to:
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-- 1) on 3.0: decompression overran buffer (179), file: sqz.cpp line: 282
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-- 2) on 2.5.7.27030: decompression overran buffer (179), file: sqz.cpp line: 228
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-- Then FB waits (or is doing?) somewhat about 2 minutes abd after this
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-- control is returned to fbtest.
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update test set a=3;
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commit;
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"""
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@pytest.mark.version('>=3')
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def test_1(act: Action):
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if act.get_server_architecture() == 'SuperServer':
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# Bucgcheck is reproduced on 2.5.7.27030 only when FW = OFF
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act.db.set_async_write() # This should be by default, but we just make sure it's OFF
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# Test
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act.expected_stdout = expected_stdout
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act.isql(switches=[], input=test_script)
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assert act.clean_stdout == act.clean_expected_stdout
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