diff options
Diffstat (limited to 'mysql-test/suite/binlog/t/innodb_rc_insert_before_delete.test')
-rw-r--r-- | mysql-test/suite/binlog/t/innodb_rc_insert_before_delete.test | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/mysql-test/suite/binlog/t/innodb_rc_insert_before_delete.test b/mysql-test/suite/binlog/t/innodb_rc_insert_before_delete.test new file mode 100644 index 00000000000..228d9778f56 --- /dev/null +++ b/mysql-test/suite/binlog/t/innodb_rc_insert_before_delete.test @@ -0,0 +1,92 @@ +--source include/have_innodb.inc +--source include/have_debug.inc +--source include/have_debug_sync.inc +--source include/have_binlog_format_mixed.inc +--source include/count_sessions.inc + +RESET MASTER; + +# MDEV-30010 merely adds is a Read-Committed version MDEV-30225 test +# solely to prove the RC isolation yields ROW binlog format as it is +# supposed to: +# https://mariadb.com/kb/en/unsafe-statements-for-statement-based-replication/#isolation-levels. +# The original MDEV-30225 test is adapted to the RC to create +# a similar safisticated scenario which does not lead to any deadlock though. + +--connect (pause_purge,localhost,root) +START TRANSACTION WITH CONSISTENT SNAPSHOT; + +--connection default +CREATE TABLE t (pk int PRIMARY KEY, sk INT UNIQUE) ENGINE=InnoDB; +INSERT INTO t VALUES (10, 100); + +--connect (con1,localhost,root) +BEGIN; # trx 0 +SELECT * FROM t WHERE sk = 100 FOR UPDATE; + +--connect (con2,localhost,root) +SET DEBUG_SYNC="lock_wait_start SIGNAL insert_wait_started"; +# trx 1 is locked on try to read the record in secondary index during duplicates +# check. It's the first in waiting queue, that's why it will be woken up firstly +# when trx 0 commits. +--send INSERT INTO t VALUES (5, 100) # trx 1 + +--connect (con3,localhost,root) +SET TRANSACTION ISOLATION LEVEL READ COMMITTED; +SET DEBUG_SYNC="now WAIT_FOR insert_wait_started"; +SET DEBUG_SYNC="lock_wait_start SIGNAL delete_started_waiting"; +# trx 2 can delete (5, 100) on master, but not on slave, as on slave trx 1 +# can insert (5, 100) after trx 2 positioned it's cursor. Trx 2 lock is placed +# in waiting queue after trx 1 lock, but its persistent cursor position was +# stored on (100, 10) record in secondary index before suspending. After trx 1 +# is committed, trx 2 will restore persistent cursor position on (100, 10). As +# (100, 5) secondary index record was inserted before (100, 10) in logical +# order, and (100, 10) record is delete-marked, trx 2 just continues scanning. +# +# Note. There can be several records with the same key in unique secondary +# index, but only one of them must be non-delete-marked. That's why when we do +# point query, cursor position is set in the first record in logical order, and +# then records are iterated until either non-delete-marked record is found or +# all records with the same unique fields are iterated. + +# to prepare showing interesting binlog events +--let $binlog_start= query_get_value(SHOW MASTER STATUS, Position, 1) +--let $binlog_file=query_get_value(SHOW MASTER STATUS, File, 1) +BEGIN; +--send UPDATE t SET sk = 200 WHERE sk = 100; # trx 2 + +--connection con1 +SET DEBUG_SYNC="now WAIT_FOR delete_started_waiting"; +DELETE FROM t WHERE sk=100; # trx 0 +COMMIT; +--disconnect con1 + +--connection con2 +--reap +--disconnect con2 + +--connection con3 +--error 0 +--reap +if (`SELECT ROW_COUNT() > 0`) +{ + --echo unexpected effective UPDATE + --die +} +--echo must be logged in ROW format as the only event of trx 2 (con3) +INSERT INTO t VALUES (11, 101); +COMMIT; +--source include/show_binlog_events.inc +--disconnect con3 + +--connection default +# If the bug is not fixed, we will see the row inserted by trx 1 here. This can +# cause duplicate key error on slave, when some other trx tries in insert row +# with the same secondary key, as was inserted by trx 1, and not deleted by trx +# 2. +SELECT * FROM t; + +--disconnect pause_purge +SET DEBUG_SYNC="RESET"; +DROP TABLE t; +--source include/wait_until_count_sessions.inc |