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MDEV-35304 fixup: Timing-independent MTR test

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Improve the `multi_source.connects_tried` feature test:
* Replace the main course from
  *checking `Connect_Tried` after sleeping a specific time* to
  *checking the duration after reaching a minimum `Connect_Tried`*
  * Not using a specific SLEEP eliminates the possibility (of failure)
    that it awakens before the `Connects_Tried` counter increments.
* In replacement-based tests of conventional views (SHOW & variants),
  assert the parallel values without distinguishing which is which
  * There were rare cases where both values end up equal (even though
    one was configured to tick more frequently than the other).
* Comment touchups

Reviewed-by: Kristian Nielsen <knielsen@knielsen-hq.org>
This commit is contained in:
ParadoxV5
2025-03-27 18:27:44 -06:00
parent ddfebd48f5
commit 18115d392f
2 changed files with 57 additions and 35 deletions
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39
mysql-test/suite/multi_source/connects_tried.result
View File

@ -3,35 +3,40 @@ include/master-slave.inc [rpl_server_count=3]
include/rpl_stop_server.inc [server_number=1]
include/rpl_stop_server.inc [server_number=3]
connection slave;
CHANGE MASTER TO master_connect_retry=1;
CHANGE MASTER 'named' TO master_host='127.0.0.1', master_port=SERVER_MYPORT_3, master_user='root', master_ssl_verify_server_cert=0, master_connect_retry=2;
CHANGE MASTER TO master_connect_retry=2;
CHANGE MASTER 'named' TO master_host='127.0.0.1', master_port=SERVER_MYPORT_3, master_user='root', master_ssl_verify_server_cert=0, master_connect_retry=1;
# `Connects_Tried` is 0 before connections begin.
SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
Connection_name Connects_Tried
0
named 0
START ALL SLAVES;
SET @time_begin= CURRENT_TIMESTAMP(1);
SET @@SESSION.default_master_connection= 'named';
include/wait_for_slave_io_error.inc [errno=2003]
SET @@SESSION.default_master_connection= '';
include/wait_for_slave_io_error.inc [errno=2003]
CREATE TEMPORARY TABLE status_begin AS
SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
# `Connects_Tried` is 1 immediately after connections begin.
# `Connects_Tried` is 1 immediately after connection begins.
SELECT Connection_name, Connects_Tried
FROM status_begin
WHERE Connects_Tried <= 0;
Connection_name Connects_Tried
DO SLEEP(3);
# `Connects_Tried` increments (at least) 3 for connection '' and 1 for 'named'.
CREATE TEMPORARY TABLE status_sleep AS
SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
SELECT *
FROM status_begin JOIN status_sleep USING(Connection_name)
WHERE status_sleep.Connects_Tried - status_begin.Connects_Tried <
IF(LENGTH(Connection_name), 1, 3);
Connection_name Connects_Tried Connects_Tried
# Boot replication up and assert final count
# `Connects_Tried` takes (at least) 2s to increment for connection '' and 1s for 'named'.
SET @@SESSION.default_master_connection= 'named';
include/wait_for_slave_param.inc [Connects_Tried]
SELECT @time_begin, CURRENT_TIMESTAMP(1)
WHERE TIMESTAMPDIFF(SECOND, @time_begin, CURRENT_TIMESTAMP(1)) < 1;
@time_begin CURRENT_TIMESTAMP(1)
CREATE TEMPORARY TABLE status_sleep AS SELECT 'named' Connection_name, Connects_Tried Connects_Tried;
SET @@SESSION.default_master_connection= '';
include/wait_for_slave_param.inc [Connects_Tried]
SELECT @time_begin, CURRENT_TIMESTAMP(1)
WHERE TIMESTAMPDIFF(SECOND, @time_begin, CURRENT_TIMESTAMP(1)) < 2;
@time_begin CURRENT_TIMESTAMP(1)
INSERT INTO status_sleep SET Connection_name= '', Connects_Tried= Connects_Tried;
# Boot replication up and compare the final counts
include/rpl_start_server.inc [server_number=1]
include/rpl_start_server.inc [server_number=3]
connection slave;
@ -58,11 +63,11 @@ Connection_name Connects_Tried Connects_Tried
SELECT * FROM status_end;
Connection_name Connects_Tried
connects_tried
named connects_tried_named
named connects_tried
SELECT * FROM status_end;
Connection_name Connects_Tried
connects_tried
named connects_tried_named
named connects_tried
STOP ALL SLAVES;
SET @@SESSION.default_master_connection= 'named';
include/wait_for_slave_to_stop.inc
@ -83,7 +88,7 @@ SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
SELECT *
FROM status_restart JOIN status_stop USING(Connection_name)
WHERE status_restart.Connects_Tried NOT BETWEEN IF(
LENGTH(Connection_name), status_stop.Connects_Tried, 1
Connection_name = '', 1, status_stop.Connects_Tried
) AND status_stop.Connects_Tried;
Connection_name Connects_Tried Connects_Tried
STOP SLAVE;
@ -95,7 +100,7 @@ SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
SELECT *
FROM status_reset JOIN status_restart USING(Connection_name)
WHERE status_reset.Connects_Tried <>
IF(LENGTH(Connection_name), status_restart.Connects_Tried, 0);
IF(Connection_name = '', 0, status_restart.Connects_Tried);
Connection_name Connects_Tried Connects_Tried
# Cleanup
RESET SLAVE 'named' ALL;

53
mysql-test/suite/multi_source/connects_tried.test
View File

@ -4,7 +4,7 @@
# separate counters in parallel multi-source (SHOW SLAVE [name] STATUS).
#
# Note: nearly all SELECT results are timing-sensitive,
# they therefore list unexpected rows because.
# therefore, they only list unexpected rows.
--source include/have_binlog_format_mixed.inc # The test is agnostic of binlog formats.
# `rpl_*.inc` (still) expects `server_1` be `master` and `server_2` be `slave`.
@ -17,14 +17,16 @@
--source include/rpl_stop_server.inc
--connection slave
CHANGE MASTER TO master_connect_retry=1;
CHANGE MASTER TO master_connect_retry=2;
--replace_result $SERVER_MYPORT_3 SERVER_MYPORT_3
--eval CHANGE MASTER 'named' TO master_host='127.0.0.1', master_port=$SERVER_MYPORT_3, master_user='root', master_ssl_verify_server_cert=0, master_connect_retry=2
--eval CHANGE MASTER 'named' TO master_host='127.0.0.1', master_port=$SERVER_MYPORT_3, master_user='root', master_ssl_verify_server_cert=0, master_connect_retry=1
--echo # `Connects_Tried` is 0 before connections begin.
SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
--disable_warnings
START ALL SLAVES; # will fail because the masters are down
SET @time_begin= CURRENT_TIMESTAMP(1);
--enable_warnings
# CR_CONN_HOST_ERROR
--let $slave_io_errno= 2003
--let $slave_io_error_is_nonfatal= 1
@ -33,25 +35,39 @@ SET @@SESSION.default_master_connection= 'named';
--let $slave_io_error_is_nonfatal= 1
SET @@SESSION.default_master_connection= '';
--source include/wait_for_slave_io_error.inc
--enable_warnings
CREATE TEMPORARY TABLE status_begin AS
SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
--echo # `Connects_Tried` is 1 immediately after connections begin.
--echo # `Connects_Tried` is 1 immediately after connection begins.
# (Though it might have ticked additional reconnects by now if stress-testing.)
SELECT Connection_name, Connects_Tried
FROM status_begin
WHERE Connects_Tried <= 0;
DO SLEEP(3);
--echo # `Connects_Tried` increments (at least) 3 for connection '' and 1 for 'named'.
CREATE TEMPORARY TABLE status_sleep AS
SELECT Connection_name, Connects_Tried FROM information_schema.SLAVE_STATUS;
SELECT *
FROM status_begin JOIN status_sleep USING(Connection_name)
WHERE status_sleep.Connects_Tried - status_begin.Connects_Tried <
IF(LENGTH(Connection_name), 1, 3);
--echo # `Connects_Tried` takes (at least) 2s to increment for connection '' and 1s for 'named'.
--let $slave_param= Connects_Tried
--let $slave_param_comparison= >
--echo # Boot replication up and assert final count
SET @@SESSION.default_master_connection= 'named';
--let $slave_param_value= `SELECT Connects_Tried FROM status_begin WHERE Connection_name = ''`
--source include/wait_for_slave_param.inc
SELECT @time_begin, CURRENT_TIMESTAMP(1)
WHERE TIMESTAMPDIFF(SECOND, @time_begin, CURRENT_TIMESTAMP(1)) < 1;
--replace_result $_show_slave_status_value Connects_Tried
--eval CREATE TEMPORARY TABLE status_sleep AS SELECT 'named' Connection_name, $_show_slave_status_value Connects_Tried
SET @@SESSION.default_master_connection= '';
--let $slave_param_value= `SELECT Connects_Tried FROM status_begin WHERE Connection_name <> ''`
--source include/wait_for_slave_param.inc
SELECT @time_begin, CURRENT_TIMESTAMP(1)
WHERE TIMESTAMPDIFF(SECOND, @time_begin, CURRENT_TIMESTAMP(1)) < 2;
--replace_result $_show_slave_status_value Connects_Tried
--eval INSERT INTO status_sleep SET Connection_name= '', Connects_Tried= $_show_slave_status_value
--echo # Boot replication up and compare the final counts
# (In an ideal environment, the 'named' connection that reconnects
# more frequently would have a `Connects_Tried` ahead of the '' one.
# In stress-testing, it instead depends on the thread timing and scheduling.)
--let $rpl_server_number= 1
--source include/rpl_start_server.inc
--let $rpl_server_number= 3
@ -60,6 +76,7 @@ SELECT *
# `wait_for_slave_io_to_start.inc` fails if the IO thread has an error.
--let $slave_param= Slave_IO_Running
--let $slave_param_value= Yes
--let $slave_param_comparison= =
SET @@SESSION.default_master_connection= 'named';
--source include/wait_for_slave_param.inc
SET @@SESSION.default_master_connection= '';
@ -83,11 +100,11 @@ SELECT *
--echo # Conventional views
--let $connects_tried= query_get_value("SHOW SLAVE STATUS", Connects_Tried, 1)
--let $connects_tried_named= query_get_value("SHOW SLAVE 'named' STATUS", Connects_Tried, 1)
--replace_result $connects_tried connects_tried $connects_tried_named connects_tried_named
--replace_result $connects_tried connects_tried $connects_tried_named connects_tried
SELECT * FROM status_end;
--let $connects_tried= query_get_value("SHOW ALL SLAVES STATUS", Connects_Tried, 1)
--let $connects_tried_named= query_get_value("SHOW ALL SLAVES STATUS", Connects_Tried, 2)
--replace_result $connects_tried connects_tried $connects_tried_named connects_tried_named
--replace_result $connects_tried connects_tried $connects_tried_named connects_tried
SELECT * FROM status_end;
--disable_warnings
@ -113,7 +130,7 @@ CREATE TEMPORARY TABLE status_restart AS
SELECT *
FROM status_restart JOIN status_stop USING(Connection_name)
WHERE status_restart.Connects_Tried NOT BETWEEN IF(
LENGTH(Connection_name), status_stop.Connects_Tried, 1
Connection_name = '', 1, status_stop.Connects_Tried
) AND status_stop.Connects_Tried;
STOP SLAVE;
@ -125,7 +142,7 @@ CREATE TEMPORARY TABLE status_reset AS
SELECT *
FROM status_reset JOIN status_restart USING(Connection_name)
WHERE status_reset.Connects_Tried <>
IF(LENGTH(Connection_name), status_restart.Connects_Tried, 0);
IF(Connection_name = '', 0, status_restart.Connects_Tried);
--echo # Cleanup
RESET SLAVE 'named' ALL;