--echo #
--echo # Bug #21025880	DUPLICATE UK VALUES IN READ-COMMITTED(AGAIN)
--echo #

--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc

let i=0;

while ($i <=1 )
{

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;

# Block purge
SET GLOBAL innodb_purge_stop_now = ON;

SET @old_tx_isolation = @@tx_isolation;
SET GLOBAL tx_isolation = 'READ-COMMITTED';

SET @old_innodb_lock_wait_timeout = @@innodb_lock_wait_timeout;
SET GLOBAL innodb_lock_wait_timeout = 1;

--connect(con1,localhost,root,,)
--connect(con2,localhost,root,,)

--connection con1

# Create and delete-mark an index record

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';
--send

if ($i == 0)
{
REPLACE INTO t1 VALUES (1,2);
}

if ( $i == 1)
{
INSERT INTO t1 values (1,2) ON DUPLICATE KEY UPDATE a=2;
}
--connection con2

SET debug_sync = 'now WAIT_FOR con1_locks_done';

SET debug_sync = 'lock_wait_suspend_thread_enter SIGNAL con2_blocked
WAIT_FOR con2_go';
SET debug_sync = 'ha_commit_trans_after_acquire_commit_lock SIGNAL
con2_insert_done WAIT_FOR con2_finish';
SET debug_sync = 'ib_after_row_insert SIGNAL con2_insert_done';

--send
REPLACE INTO t1 VALUES (1,3);

--connection default
SET debug_sync = 'now WAIT_FOR con2_blocked';

SET GLOBAL innodb_purge_run_now=ON;

# Wait for purge to delete the delete-marked record
let $wait_condition=
    SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS
    WHERE VARIABLE_NAME='INNODB_PURGE_TRX_ID_AGE' AND VARIABLE_VALUE=2;
--source include/wait_condition.inc

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';
SET debug_sync = 'now SIGNAL con2_finish';

--connection con1
--reap

--connection con2
--error 0,ER_LOCK_WAIT_TIMEOUT
--reap

--connection default

--disconnect con1
--disconnect con2

SELECT * FROM t1;
CHECK TABLE t1;

DROP TABLE t1;

SET GLOBAL innodb_stats_auto_recalc = @old_innodb_stats_auto_recalc;
SET GLOBAL tx_isolation = @old_tx_isolation;
SET GLOBAL innodb_lock_wait_timeout = @old_innodb_lock_wait_timeout;

# Clean up resources used in this test case.
--disable_warnings
SET DEBUG_SYNC= 'RESET';
--enable_warnings

--inc $i
}