#
# Bug #21025880	DUPLICATE UK VALUES IN READ-COMMITTED(AGAIN)
#
CREATE TABLE t1 (
a INT NOT NULL,
b INT NOT NULL,
PRIMARY KEY(b),
UNIQUE KEY(a))
ENGINE=INNODB;
SET @old_innodb_stats_auto_recalc = @@innodb_stats_auto_recalc;
SET GLOBAL innodb_stats_auto_recalc = OFF;
connect  purge_control,localhost,root;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
SET @old_tx_isolation = @@transaction_isolation;
SET GLOBAL transaction_isolation = 'READ-COMMITTED';
SET @old_innodb_lock_wait_timeout = @@innodb_lock_wait_timeout;
SET GLOBAL innodb_lock_wait_timeout = 1;
connect con1,localhost,root,,;
INSERT INTO t1 VALUES (1,1),(2,2);
DELETE FROM t1;
SET debug_sync = 'row_ins_sec_index_entry_dup_locks_created SIGNAL
con1_locks_done WAIT_FOR con1_go';
SET debug_sync = 'ha_commit_trans_after_acquire_commit_lock SIGNAL
con1_insert_done WAIT_FOR con1_finish';
REPLACE INTO t1 VALUES (1,2);
connect con2,localhost,root,,;
SET debug_sync = 'now WAIT_FOR con1_locks_done';
SET debug_sync = 'lock_wait_start SIGNAL con2_blocked
WAIT_FOR con2_go';
SET debug_sync = 'ha_commit_trans_after_acquire_commit_lock
WAIT_FOR con2_finish';
SET debug_sync = 'ib_after_row_insert SIGNAL con2_insert_done';
REPLACE INTO t1 VALUES (1,3);
connection default;
SET debug_sync = 'now WAIT_FOR con2_blocked';
connection purge_control;
COMMIT;
disconnect purge_control;
connection default;
InnoDB		0 transactions not purged
SET debug_sync = 'now SIGNAL con2_go WAIT_FOR con2_insert_done';
SET debug_sync = 'now SIGNAL con1_go WAIT_FOR con1_insert_done';
SET debug_sync = 'now SIGNAL con1_finish';
connection con1;
disconnect con1;
connection default;
SET debug_sync = 'now SIGNAL con2_finish';
connection con2;
disconnect con2;
connection default;
SET DEBUG_SYNC= 'RESET';
SELECT * FROM t1;
a	b
1	2
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
DROP TABLE t1;
SET GLOBAL innodb_stats_auto_recalc = @old_innodb_stats_auto_recalc;
SET GLOBAL transaction_isolation = @old_tx_isolation;
SET GLOBAL innodb_lock_wait_timeout = @old_innodb_lock_wait_timeout;
CREATE TABLE t1 (
a INT NOT NULL,
b INT NOT NULL,
PRIMARY KEY(b),
UNIQUE KEY(a))
ENGINE=INNODB;
SET @old_innodb_stats_auto_recalc = @@innodb_stats_auto_recalc;
SET GLOBAL innodb_stats_auto_recalc = OFF;
connect  purge_control,localhost,root;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
SET @old_tx_isolation = @@transaction_isolation;
SET GLOBAL transaction_isolation = 'READ-COMMITTED';
SET @old_innodb_lock_wait_timeout = @@innodb_lock_wait_timeout;
SET GLOBAL innodb_lock_wait_timeout = 1;
connect con1,localhost,root,,;
INSERT INTO t1 VALUES (1,1),(2,2);
DELETE FROM t1;
SET debug_sync = 'row_ins_sec_index_entry_dup_locks_created SIGNAL
con1_locks_done WAIT_FOR con1_go';
SET debug_sync = 'ha_commit_trans_after_acquire_commit_lock SIGNAL
con1_insert_done WAIT_FOR con1_finish';
INSERT INTO t1 values (1,2) ON DUPLICATE KEY UPDATE a=2;
connect con2,localhost,root,,;
SET debug_sync = 'now WAIT_FOR con1_locks_done';
SET debug_sync = 'lock_wait_start SIGNAL con2_blocked
WAIT_FOR con2_go';
SET debug_sync = 'ha_commit_trans_after_acquire_commit_lock
WAIT_FOR con2_finish';
SET debug_sync = 'ib_after_row_insert SIGNAL con2_insert_done';
REPLACE INTO t1 VALUES (1,3);
connection default;
SET debug_sync = 'now WAIT_FOR con2_blocked';
connection purge_control;
COMMIT;
disconnect purge_control;
connection default;
InnoDB		0 transactions not purged
SET debug_sync = 'now SIGNAL con2_go WAIT_FOR con2_insert_done';
SET debug_sync = 'now SIGNAL con1_go WAIT_FOR con1_insert_done';
SET debug_sync = 'now SIGNAL con1_finish';
connection con1;
disconnect con1;
connection default;
SET debug_sync = 'now SIGNAL con2_finish';
connection con2;
disconnect con2;
connection default;
SET DEBUG_SYNC= 'RESET';
SELECT * FROM t1;
a	b
1	2
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
DROP TABLE t1;
SET GLOBAL innodb_stats_auto_recalc = @old_innodb_stats_auto_recalc;
SET GLOBAL transaction_isolation = @old_tx_isolation;
SET GLOBAL innodb_lock_wait_timeout = @old_innodb_lock_wait_timeout;