2 @message |
assert
checked_mode: table, STDLOG: Records affected: 6
checked_mode: table, STDLOG: ID
checked_mode: table, STDLOG:
checked_mode: table, STDLOG: 1
checked_mode: table, STDLOG: 2
checked_mode: table, STDLOG: Records affected: 2
checked_mode: table, STDLOG: OLD_ID OP SNAP_NO_RANK
checked_mode: table, STDLOG:
- checked_mode: table, STDLOG: 3 DEL 1
+ checked_mode: table, STDLOG: 3DEL 1
- checked_mode: table, STDLOG: 4 DEL 1
+ checked_mode: table, STDLOG: 4DEL 1
- checked_mode: table, STDLOG: -3 DEL 2
+ checked_mode: table, STDLOG: -3DEL 2
- checked_mode: table, STDLOG: -2 DEL 2
+ checked_mode: table, STDLOG: -2DEL 2
- checked_mode: table, STDLOG: -1 DEL 2
+ checked_mode: table, STDLOG: -1DEL 2
- checked_mode: table, STDLOG: 3 DEL 2
+ checked_mode: table, STDLOG: 3DEL 2
- checked_mode: table, STDLOG: 4 DEL 2
+ checked_mode: table, STDLOG: 4DEL 2
- checked_mode: table, STDLOG: 5 DEL 2
+ checked_mode: table, STDLOG: 5DEL 2
checked_mode: table, STDLOG: Records affected: 8
LOG DETAILS:
2025-07-01 06:04:53.150
2025-07-01 06:04:53.156 act = <firebird.qa.plugin.Action object at [hex]>
2025-07-01 06:04:53.162 fn_worker_sql = PosixPath('/var/tmp/qa_2024/test_12477/tmp_worker.sql')
2025-07-01 06:04:53.167 fn_worker_log = PosixPath('/var/tmp/qa_2024/test_12477/tmp_worker.log')
2025-07-01 06:04:53.174 fn_worker_err = PosixPath('/var/tmp/qa_2024/test_12477/tmp_worker.err')
2025-07-01 06:04:53.182 capsys = <_pytest.capture.CaptureFixture object at [hex]>
2025-07-01 06:04:53.190
2025-07-01 06:04:53.195 @pytest.mark.trace
2025-07-01 06:04:53.201 @pytest.mark.version('>=4.0.2')
2025-07-01 06:04:53.207 def test_1(act: Action, fn_worker_sql: Path, fn_worker_log: Path, fn_worker_err: Path, capsys):
2025-07-01 06:04:53.214 sql_init = (act.files_dir / 'read-consist-sttm-restart-DDL.sql').read_text()
2025-07-01 06:04:53.221
2025-07-01 06:04:53.228 for checked_mode in('table', 'view'):
2025-07-01 06:04:53.235 target_obj = 'test' if checked_mode == 'table' else 'v_test'
2025-07-01 06:04:53.242 SQL_TO_BE_RESTARTED = f'delete /* {SQL_TAG_THAT_WE_WAITING_FOR} */ from {target_obj} where id < 0 or id >= 3 order by id'
2025-07-01 06:04:53.249
2025-07-01 06:04:53.255 # add rows with ID = 1,2,3,4,5:
2025-07-01 06:04:53.262 sql_addi = f'''
2025-07-01 06:04:53.269 set term ^;
2025-07-01 06:04:53.275 execute block as
2025-07-01 06:04:53.283 begin
2025-07-01 06:04:53.294 rdb$set_context('USER_SESSION', 'WHO', 'INIT_DATA');
2025-07-01 06:04:53.304 end
2025-07-01 06:04:53.313 ^
2025-07-01 06:04:53.319 set term ;^
2025-07-01 06:04:53.325 insert into {target_obj}(id, x)
2025-07-01 06:04:53.332 select row_number()over(),row_number()over()
2025-07-01 06:04:53.339 from rdb$types rows 5;
2025-07-01 06:04:53.347 commit;
2025-07-01 06:04:53.359 '''
2025-07-01 06:04:53.371
2025-07-01 06:04:53.378 act.isql(switches=['-q'], input = ''.join( (sql_init, sql_addi) ) )
2025-07-01 06:04:53.385 # ::: NOTE ::: We have to immediately quit if any error raised in prepare phase.
2025-07-01 06:04:53.391 # See also letter from dimitr, 01-feb-2022 14:46
2025-07-01 06:04:53.398 assert act.stderr == ''
2025-07-01 06:04:53.404 act.reset()
2025-07-01 06:04:53.409
2025-07-01 06:04:53.415 trace_cfg_items = [
2025-07-01 06:04:53.420 'time_threshold = 0',
2025-07-01 06:04:53.424 'log_errors = true',
2025-07-01 06:04:53.429 'log_statement_start = true',
2025-07-01 06:04:53.439 'log_statement_finish = true',
2025-07-01 06:04:53.444 ]
2025-07-01 06:04:53.449
2025-07-01 06:04:53.456 with act.trace(db_events = trace_cfg_items, encoding=locale.getpreferredencoding()):
2025-07-01 06:04:53.462
2025-07-01 06:04:53.469 with act.db.connect() as con_lock_1, act.db.connect() as con_lock_2, act.db.connect() as con_monitoring:
2025-07-01 06:04:53.475
2025-07-01 06:04:53.482 tpb_monitoring = tpb(isolation=Isolation.READ_COMMITTED_RECORD_VERSION, lock_timeout=0)
2025-07-01 06:04:53.490 tx_monitoring = con_monitoring.transaction_manager(tpb_monitoring)
2025-07-01 06:04:53.503 cur_monitoring = tx_monitoring.cursor()
2025-07-01 06:04:53.511
2025-07-01 06:04:53.518 for i,c in enumerate((con_lock_1,con_lock_2)):
2025-07-01 06:04:53.524 sttm = f"execute block as begin rdb$set_context('USER_SESSION', 'WHO', 'LOCKER #{i+1}'); end"
2025-07-01 06:04:53.530 c.execute_immediate(sttm)
2025-07-01 06:04:53.535
2025-07-01 06:04:53.542 #########################
2025-07-01 06:04:53.551 ### L O C K E R - 1 ###
2025-07-01 06:04:53.559 #########################
2025-07-01 06:04:53.567 con_lock_1.execute_immediate( f'update {target_obj} set id=id where id = 5' )
2025-07-01 06:04:53.574
2025-07-01 06:04:53.580 worker_sql = f'''
2025-07-01 06:04:53.587 set list on;
2025-07-01 06:04:53.594 set autoddl off;
2025-07-01 06:04:53.601 set term ^;
2025-07-01 06:04:53.608 execute block returns (whoami varchar(30)) as
2025-07-01 06:04:53.615 begin
2025-07-01 06:04:53.622 whoami = 'WORKER'; -- , ATT#' || current_connection;
2025-07-01 06:04:53.631 rdb$set_context('USER_SESSION','WHO', whoami);
2025-07-01 06:04:53.642 -- suspend;
2025-07-01 06:04:53.649 end
2025-07-01 06:04:53.656 ^
2025-07-01 06:04:53.662 set term ;^
2025-07-01 06:04:53.667 commit;
2025-07-01 06:04:53.673 --set echo on;
2025-07-01 06:04:53.678 SET KEEP_TRAN_PARAMS ON;
2025-07-01 06:04:53.685 set transaction read committed read consistency;
2025-07-01 06:04:53.692 --select current_connection, current_transaction from rdb$database;
2025-07-01 06:04:53.700 set list off;
2025-07-01 06:04:53.707 set wng off;
2025-07-01 06:04:53.714 --set plan on;
2025-07-01 06:04:53.720 set count on;
2025-07-01 06:04:53.727
2025-07-01 06:04:53.734 -- delete from {target_obj} where id < 0 or id >= 3 order by id; -- THIS MUST BE LOCKED
2025-07-01 06:04:53.741 {SQL_TO_BE_RESTARTED};
2025-07-01 06:04:53.747
2025-07-01 06:04:53.755 -- check results:
2025-07-01 06:04:53.767 -- ###############
2025-07-01 06:04:53.776 select id from {target_obj} order by id; -- this will produce output only after all lockers do their commit/rollback
2025-07-01 06:04:53.781
2025-07-01 06:04:53.787 select v.old_id, v.op, v.snap_no_rank
2025-07-01 06:04:53.791 from v_worker_log v
2025-07-01 06:04:53.796 where v.op = 'del';
2025-07-01 06:04:53.801
2025-07-01 06:04:53.806 set width who 10;
2025-07-01 06:04:53.810 -- DO NOT check this! Values can differ here from one run to another!
2025-07-01 06:04:53.815 -- select id, trn, who, old_id, new_id, op, rec_vers, global_cn, snap_no from tlog_done order by id;
2025-07-01 06:04:53.820
2025-07-01 06:04:53.824 rollback;
2025-07-01 06:04:53.829
2025-07-01 06:04:53.835 '''
2025-07-01 06:04:53.840
2025-07-01 06:04:53.847 fn_worker_sql.write_text(worker_sql)
2025-07-01 06:04:53.854
2025-07-01 06:04:53.866 with fn_worker_log.open(mode='w') as hang_out, fn_worker_err.open(mode='w') as hang_err:
2025-07-01 06:04:53.875
2025-07-01 06:04:53.884 ############################################################################
2025-07-01 06:04:53.890 ### L A U N C H W O R K E R U S I N G I S Q L, A S Y N C. ###
2025-07-01 06:04:53.896 ############################################################################
2025-07-01 06:04:53.903 p_worker = subprocess.Popen([act.vars['isql'], '-i', str(fn_worker_sql),
2025-07-01 06:04:53.911 '-user', act.db.user,
2025-07-01 06:04:53.918 '-password', act.db.password,
2025-07-01 06:04:53.928 act.db.dsn
2025-07-01 06:04:53.939 ],
2025-07-01 06:04:53.951 stdout = hang_out,
2025-07-01 06:04:53.961 stderr = hang_err
2025-07-01 06:04:53.970 )
2025-07-01 06:04:53.977 # NB: when ISQL will establish attach, first record that it must lock is ID = 3 -- see above SQL_TO_BE_RESTARTED
2025-07-01 06:04:53.984 # We must to ensure that this (worker) attachment has been really created and LOCKS this record:
2025-07-01 06:04:53.989 #
2025-07-01 06:04:53.994 wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=3', SQL_TAG_THAT_WE_WAITING_FOR)
2025-07-01 06:04:53.999
2025-07-01 06:04:54.003
2025-07-01 06:04:54.008 #########################
2025-07-01 06:04:54.013 ### L O C K E R - 2 ###
2025-07-01 06:04:54.018 #########################
2025-07-01 06:04:54.024 # Insert ID value that is less than previous min(id).
2025-07-01 06:04:54.030 # Session-worker is executing its statement using PLAN ORDER,
2025-07-01 06:04:54.035 # and it should see this new value and restart its statement:
2025-07-01 06:04:54.040 con_lock_2.execute_immediate( f'insert into {target_obj}(id) values(-1)' )
2025-07-01 06:04:54.046 con_lock_2.commit()
2025-07-01 06:04:54.053 con_lock_2.execute_immediate( f'update {target_obj} set id=id where id = -1' )
2025-07-01 06:04:54.058
2025-07-01 06:04:54.071 #########################
2025-07-01 06:04:54.082 ### L O C K E R - 1 ###
2025-07-01 06:04:54.089 #########################
2025-07-01 06:04:54.095 con_lock_1.commit() # releases record with ID = 5 ==> now it can be locked by worker.
2025-07-01 06:04:54.100
2025-07-01 06:04:54.107 # We have to WAIT HERE until worker will actually 'catch' just released record with ID = 5.
2025-07-01 06:04:54.113 #
2025-07-01 06:04:54.123 wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=5', SQL_TAG_THAT_WE_WAITING_FOR)
2025-07-01 06:04:54.130 # If we come here then it means that record with ID = 5 for sure is locked by WORKER.
2025-07-01 06:04:54.135
2025-07-01 06:04:54.145 con_lock_1.execute_immediate( f'insert into {target_obj}(id) values(-2)' )
2025-07-01 06:04:54.156 con_lock_1.commit()
2025-07-01 06:04:54.166 con_lock_1.execute_immediate( f'update {target_obj} set id=id where id = -2' )
2025-07-01 06:04:54.174
2025-07-01 06:04:54.182
2025-07-01 06:04:54.187 #########################
2025-07-01 06:04:54.192 ### L O C K E R - 2 ###
2025-07-01 06:04:54.196 #########################
2025-07-01 06:04:54.201 # Insert ID value that is less than previous min(id).
2025-07-01 06:04:54.205 # Session-worker is executing its statement using PLAN ORDER,
2025-07-01 06:04:54.210 # and it should see this new value and restart its statement:
2025-07-01 06:04:54.216 con_lock_2.commit()
2025-07-01 06:04:54.222
2025-07-01 06:04:54.234 # We have to WAIT HERE until worker will actually 'catch' just released record with ID = -1.
2025-07-01 06:04:54.244 #
2025-07-01 06:04:54.257 wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=-1', SQL_TAG_THAT_WE_WAITING_FOR)
2025-07-01 06:04:54.268 # If we come here then it means that record with ID = -1 for sure is locked by WORKER.
2025-07-01 06:04:54.278
2025-07-01 06:04:54.289 con_lock_2.execute_immediate( f'insert into {target_obj}(id) values(-3)' )
2025-07-01 06:04:54.299 con_lock_2.commit()
2025-07-01 06:04:54.307 con_lock_2.execute_immediate( f'update {target_obj} set id=id where id = -3' )
2025-07-01 06:04:54.314
2025-07-01 06:04:54.319 #########################
2025-07-01 06:04:54.324 ### L O C K E R - 1 ###
2025-07-01 06:04:54.328 #########################
2025-07-01 06:04:54.333 con_lock_1.commit()
2025-07-01 06:04:54.338
2025-07-01 06:04:54.345 # We have to WAIT HERE until worker will actually 'catch' just released record with ID = -2.
2025-07-01 06:04:54.350 #
2025-07-01 06:04:54.357 wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=-2', SQL_TAG_THAT_WE_WAITING_FOR)
2025-07-01 06:04:54.363 # If we come here then it means that record with ID = -2 for sure is locked by WORKER.
2025-07-01 06:04:54.368
2025-07-01 06:04:54.375
2025-07-01 06:04:54.380 con_lock_2.commit() # WORKER will complete his job after this
2025-07-01 06:04:54.385
2025-07-01 06:04:54.389 # Here we wait for ISQL complete its mission:
2025-07-01 06:04:54.394 p_worker.wait()
2025-07-01 06:04:54.398
2025-07-01 06:04:54.403 #< with act.db.connect()
2025-07-01 06:04:54.408
2025-07-01 06:04:54.417
2025-07-01 06:04:54.424 for g in (fn_worker_log, fn_worker_err):
2025-07-01 06:04:54.432 with g.open() as f:
2025-07-01 06:04:54.439 for line in f:
2025-07-01 06:04:54.449 if line.split():
2025-07-01 06:04:54.461 if g == fn_worker_log:
2025-07-01 06:04:54.472 print(f'checked_mode: {checked_mode}, STDLOG: {line}')
2025-07-01 06:04:54.482 else:
2025-07-01 06:04:54.490 print(f'UNEXPECTED STDERR {line}')
2025-07-01 06:04:54.502
2025-07-01 06:04:54.512 expected_stdout_worker = f"""
2025-07-01 06:04:54.519 checked_mode: {checked_mode}, STDLOG: Records affected: 6
2025-07-01 06:04:54.527
2025-07-01 06:04:54.536 checked_mode: {checked_mode}, STDLOG: ID
2025-07-01 06:04:54.544 checked_mode: {checked_mode}, STDLOG: =======
2025-07-01 06:04:54.549 checked_mode: {checked_mode}, STDLOG: 1
2025-07-01 06:04:54.554 checked_mode: {checked_mode}, STDLOG: 2
2025-07-01 06:04:54.564 checked_mode: {checked_mode}, STDLOG: Records affected: 2
2025-07-01 06:04:54.576
2025-07-01 06:04:54.586 checked_mode: {checked_mode}, STDLOG: OLD_ID OP SNAP_NO_RANK
2025-07-01 06:04:54.595 checked_mode: {checked_mode}, STDLOG: ======= ====== =====================
2025-07-01 06:04:54.607 checked_mode: {checked_mode}, STDLOG: 3 DEL 1
2025-07-01 06:04:54.616 checked_mode: {checked_mode}, STDLOG: 4 DEL 1
2025-07-01 06:04:54.623 checked_mode: {checked_mode}, STDLOG: -3 DEL 2
2025-07-01 06:04:54.630 checked_mode: {checked_mode}, STDLOG: -2 DEL 2
2025-07-01 06:04:54.639 checked_mode: {checked_mode}, STDLOG: -1 DEL 2
2025-07-01 06:04:54.650 checked_mode: {checked_mode}, STDLOG: 3 DEL 2
2025-07-01 06:04:54.658 checked_mode: {checked_mode}, STDLOG: 4 DEL 2
2025-07-01 06:04:54.665 checked_mode: {checked_mode}, STDLOG: 5 DEL 2
2025-07-01 06:04:54.671 checked_mode: {checked_mode}, STDLOG: Records affected: 8
2025-07-01 06:04:54.683 """
2025-07-01 06:04:54.695
2025-07-01 06:04:54.707 act.expected_stdout = expected_stdout_worker
2025-07-01 06:04:54.719 act.stdout = capsys.readouterr().out
2025-07-01 06:04:54.731 > assert act.clean_stdout == act.clean_expected_stdout
2025-07-01 06:04:54.741 E assert
2025-07-01 06:04:54.755 E checked_mode: table, STDLOG: Records affected: 6
2025-07-01 06:04:54.767 E checked_mode: table, STDLOG: ID
2025-07-01 06:04:54.776 E checked_mode: table, STDLOG:
2025-07-01 06:04:54.784 E checked_mode: table, STDLOG: 1
2025-07-01 06:04:54.791 E checked_mode: table, STDLOG: 2
2025-07-01 06:04:54.798 E checked_mode: table, STDLOG: Records affected: 2
2025-07-01 06:04:54.804 E checked_mode: table, STDLOG: OLD_ID OP SNAP_NO_RANK
2025-07-01 06:04:54.810 E checked_mode: table, STDLOG:
2025-07-01 06:04:54.821 E - checked_mode: table, STDLOG: 3 DEL 1
2025-07-01 06:04:54.838 E + checked_mode: table, STDLOG: 3DEL 1
2025-07-01 06:04:54.848 E - checked_mode: table, STDLOG: 4 DEL 1
2025-07-01 06:04:54.867 E + checked_mode: table, STDLOG: 4DEL 1
2025-07-01 06:04:54.879 E - checked_mode: table, STDLOG: -3 DEL 2
2025-07-01 06:04:54.902 E + checked_mode: table, STDLOG: -3DEL 2
2025-07-01 06:04:54.912 E - checked_mode: table, STDLOG: -2 DEL 2
2025-07-01 06:04:54.927 E + checked_mode: table, STDLOG: -2DEL 2
2025-07-01 06:04:54.934 E - checked_mode: table, STDLOG: -1 DEL 2
2025-07-01 06:04:54.946 E + checked_mode: table, STDLOG: -1DEL 2
2025-07-01 06:04:54.958 E - checked_mode: table, STDLOG: 3 DEL 2
2025-07-01 06:04:54.977 E + checked_mode: table, STDLOG: 3DEL 2
2025-07-01 06:04:54.985 E - checked_mode: table, STDLOG: 4 DEL 2
2025-07-01 06:04:55.006 E + checked_mode: table, STDLOG: 4DEL 2
2025-07-01 06:04:55.015 E - checked_mode: table, STDLOG: 5 DEL 2
2025-07-01 06:04:55.031 E + checked_mode: table, STDLOG: 5DEL 2
2025-07-01 06:04:55.037 E checked_mode: table, STDLOG: Records affected: 8
2025-07-01 06:04:55.043
2025-07-01 06:04:55.049 tests/functional/transactions/test_read_consist_sttm_restart_on_delete_02.py:437: AssertionError
2025-07-01 06:04:55.055 ---------------------------- Captured stdout setup -----------------------------
2025-07-01 06:04:55.062 Creating db: localhost:/var/tmp/qa_2024/test_12477/test.fdb [page_size=None, sql_dialect=None, charset='NONE', user=SYSDBA, password=masterkey]
|
3 #text |
act = <firebird.qa.plugin.Action pytest object at [hex]>
fn_worker_sql = PosixPath('/var/tmp/qa_2024/test_12477/tmp_worker.sql')
fn_worker_log = PosixPath('/var/tmp/qa_2024/test_12477/tmp_worker.log')
fn_worker_err = PosixPath('/var/tmp/qa_2024/test_12477/tmp_worker.err')
capsys = <_pytest.capture.CaptureFixture pytest object at [hex]>
@pytest.mark.trace
@pytest.mark.version('>=4.0.2')
def test_1(act: Action, fn_worker_sql: Path, fn_worker_log: Path, fn_worker_err: Path, capsys):
sql_init = (act.files_dir / 'read-consist-sttm-restart-DDL.sql').read_text()
for checked_mode in('table', 'view'):
target_obj = 'test' if checked_mode == 'table' else 'v_test'
SQL_TO_BE_RESTARTED = f'delete /* {SQL_TAG_THAT_WE_WAITING_FOR} */ from {target_obj} where id < 0 or id >= 3 order by id'
# add rows with ID = 1,2,3,4,5:
sql_addi = f'''
set term ^;
execute block as
begin
rdb$set_context('USER_SESSION', 'WHO', 'INIT_DATA');
end
^
set term ;^
insert into {target_obj}(id, x)
select row_number()over(),row_number()over()
from rdb$types rows 5;
commit;
'''
act.isql(switches=['-q'], input = ''.join( (sql_init, sql_addi) ) )
# ::: NOTE ::: We have to immediately quit if any error raised in prepare phase.
# See also letter from dimitr, 01-feb-2022 14:46
assert act.stderr == ''
act.reset()
trace_cfg_items = [
'time_threshold = 0',
'log_errors = true',
'log_statement_start = true',
'log_statement_finish = true',
]
with act.trace(db_events = trace_cfg_items, encoding=locale.getpreferredencoding()):
with act.db.connect() as con_lock_1, act.db.connect() as con_lock_2, act.db.connect() as con_monitoring:
tpb_monitoring = tpb(isolation=Isolation.READ_COMMITTED_RECORD_VERSION, lock_timeout=0)
tx_monitoring = con_monitoring.transaction_manager(tpb_monitoring)
cur_monitoring = tx_monitoring.cursor()
for i,c in enumerate((con_lock_1,con_lock_2)):
sttm = f"execute block as begin rdb$set_context('USER_SESSION', 'WHO', 'LOCKER #{i+1}'); end"
c.execute_immediate(sttm)
#########################
### L O C K E R - 1 ###
#########################
con_lock_1.execute_immediate( f'update {target_obj} set id=id where id = 5' )
worker_sql = f'''
set list on;
set autoddl off;
set term ^;
execute block returns (whoami varchar(30)) as
begin
whoami = 'WORKER'; -- , ATT#' || current_connection;
rdb$set_context('USER_SESSION','WHO', whoami);
-- suspend;
end
^
set term ;^
commit;
--set echo on;
SET KEEP_TRAN_PARAMS ON;
set transaction read committed read consistency;
--select current_connection, current_transaction from rdb$database;
set list off;
set wng off;
--set plan on;
set count on;
-- delete from {target_obj} where id < 0 or id >= 3 order by id; -- THIS MUST BE LOCKED
{SQL_TO_BE_RESTARTED};
-- check results:
-- ###############
select id from {target_obj} order by id; -- this will produce output only after all lockers do their commit/rollback
select v.old_id, v.op, v.snap_no_rank
from v_worker_log v
where v.op = 'del';
set width who 10;
-- DO NOT check this! Values can differ here from one run to another!
-- select id, trn, who, old_id, new_id, op, rec_vers, global_cn, snap_no from tlog_done order by id;
rollback;
'''
fn_worker_sql.write_text(worker_sql)
with fn_worker_log.open(mode='w') as hang_out, fn_worker_err.open(mode='w') as hang_err:
############################################################################
### L A U N C H W O R K E R U S I N G I S Q L, A S Y N C. ###
############################################################################
p_worker = subprocess.Popen([act.vars['isql'], '-i', str(fn_worker_sql),
'-user', act.db.user,
'-password', act.db.password,
act.db.dsn
],
stdout = hang_out,
stderr = hang_err
)
# NB: when ISQL will establish attach, first record that it must lock is ID = 3 -- see above SQL_TO_BE_RESTARTED
# We must to ensure that this (worker) attachment has been really created and LOCKS this record:
#
wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=3', SQL_TAG_THAT_WE_WAITING_FOR)
#########################
### L O C K E R - 2 ###
#########################
# Insert ID value that is less than previous min(id).
# Session-worker is executing its statement using PLAN ORDER,
# and it should see this new value and restart its statement:
con_lock_2.execute_immediate( f'insert into {target_obj}(id) values(-1)' )
con_lock_2.commit()
con_lock_2.execute_immediate( f'update {target_obj} set id=id where id = -1' )
#########################
### L O C K E R - 1 ###
#########################
con_lock_1.commit() # releases record with ID = 5 ==> now it can be locked by worker.
# We have to WAIT HERE until worker will actually 'catch' just released record with ID = 5.
#
wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=5', SQL_TAG_THAT_WE_WAITING_FOR)
# If we come here then it means that record with ID = 5 for sure is locked by WORKER.
con_lock_1.execute_immediate( f'insert into {target_obj}(id) values(-2)' )
con_lock_1.commit()
con_lock_1.execute_immediate( f'update {target_obj} set id=id where id = -2' )
#########################
### L O C K E R - 2 ###
#########################
# Insert ID value that is less than previous min(id).
# Session-worker is executing its statement using PLAN ORDER,
# and it should see this new value and restart its statement:
con_lock_2.commit()
# We have to WAIT HERE until worker will actually 'catch' just released record with ID = -1.
#
wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=-1', SQL_TAG_THAT_WE_WAITING_FOR)
# If we come here then it means that record with ID = -1 for sure is locked by WORKER.
con_lock_2.execute_immediate( f'insert into {target_obj}(id) values(-3)' )
con_lock_2.commit()
con_lock_2.execute_immediate( f'update {target_obj} set id=id where id = -3' )
#########################
### L O C K E R - 1 ###
#########################
con_lock_1.commit()
# We have to WAIT HERE until worker will actually 'catch' just released record with ID = -2.
#
wait_for_record_become_locked(tx_monitoring, cur_monitoring, f'update {target_obj} set id=id where id=-2', SQL_TAG_THAT_WE_WAITING_FOR)
# If we come here then it means that record with ID = -2 for sure is locked by WORKER.
con_lock_2.commit() # WORKER will complete his job after this
# Here we wait for ISQL complete its mission:
p_worker.wait()
#< with act.db.connect()
for g in (fn_worker_log, fn_worker_err):
with g.open() as f:
for line in f:
if line.split():
if g == fn_worker_log:
print(f'checked_mode: {checked_mode}, STDLOG: {line}')
else:
print(f'UNEXPECTED STDERR {line}')
expected_stdout_worker = f"""
checked_mode: {checked_mode}, STDLOG: Records affected: 6
checked_mode: {checked_mode}, STDLOG: ID
checked_mode: {checked_mode}, STDLOG: =======
checked_mode: {checked_mode}, STDLOG: 1
checked_mode: {checked_mode}, STDLOG: 2
checked_mode: {checked_mode}, STDLOG: Records affected: 2
checked_mode: {checked_mode}, STDLOG: OLD_ID OP SNAP_NO_RANK
checked_mode: {checked_mode}, STDLOG: ======= ====== =====================
checked_mode: {checked_mode}, STDLOG: 3 DEL 1
checked_mode: {checked_mode}, STDLOG: 4 DEL 1
checked_mode: {checked_mode}, STDLOG: -3 DEL 2
checked_mode: {checked_mode}, STDLOG: -2 DEL 2
checked_mode: {checked_mode}, STDLOG: -1 DEL 2
checked_mode: {checked_mode}, STDLOG: 3 DEL 2
checked_mode: {checked_mode}, STDLOG: 4 DEL 2
checked_mode: {checked_mode}, STDLOG: 5 DEL 2
checked_mode: {checked_mode}, STDLOG: Records affected: 8
"""
act.expected_stdout = expected_stdout_worker
act.stdout = capsys.readouterr().out
> assert act.clean_stdout == act.clean_expected_stdout
E assert
E checked_mode: table, STDLOG: Records affected: 6
E checked_mode: table, STDLOG: ID
E checked_mode: table, STDLOG:
E checked_mode: table, STDLOG: 1
E checked_mode: table, STDLOG: 2
E checked_mode: table, STDLOG: Records affected: 2
E checked_mode: table, STDLOG: OLD_ID OP SNAP_NO_RANK
E checked_mode: table, STDLOG:
E - checked_mode: table, STDLOG: 3 DEL 1
E + checked_mode: table, STDLOG: 3DEL 1
E - checked_mode: table, STDLOG: 4 DEL 1
E + checked_mode: table, STDLOG: 4DEL 1
E - checked_mode: table, STDLOG: -3 DEL 2
E + checked_mode: table, STDLOG: -3DEL 2
E - checked_mode: table, STDLOG: -2 DEL 2
E + checked_mode: table, STDLOG: -2DEL 2
E - checked_mode: table, STDLOG: -1 DEL 2
E + checked_mode: table, STDLOG: -1DEL 2
E - checked_mode: table, STDLOG: 3 DEL 2
E + checked_mode: table, STDLOG: 3DEL 2
E - checked_mode: table, STDLOG: 4 DEL 2
E + checked_mode: table, STDLOG: 4DEL 2
E - checked_mode: table, STDLOG: 5 DEL 2
E + checked_mode: table, STDLOG: 5DEL 2
E checked_mode: table, STDLOG: Records affected: 8
tests/functional/transactions/test_read_consist_sttm_restart_on_delete_02.py:437: AssertionError
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