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Add and adjust a test from MySQL:
commit 1198267c331b045b9cad26be72b1a5b4f8930a79 Author: Thirunarayanan Balathandayuthapani <thirunarayanan.balathandayuth@oracle.com> Date: Fri Aug 26 11:00:44 2016 +0530 Bug #20989615 INNODB AUTO_INCREMENT PRODUCES SAME VALUE TWICE The code fix is already present.
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‎mysql-test/suite/innodb/r/autoinc_debug.result‎

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CREATE TABLE t1 (id INT AUTO_INCREMENT PRIMARY KEY)ENGINE=INNODB;
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# SETTING auto_increment_increment IN CONNECTION DEFAULT
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SET AUTO_INCREMENT_INCREMENT = 1;
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INSERT INTO t1 VALUES(NULL);
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SELECT * FROM t1;
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id
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1
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=latin1
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# SETTING auto_increment_increment IN CONNECTION1
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SET AUTO_INCREMENT_INCREMENT = 2;
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SET DEBUG_SYNC= 'ib_after_row_insert SIGNAL opened WAIT_FOR flushed1';
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INSERT INTO t1 VALUES(NULL);
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SET AUTO_INCREMENT_INCREMENT = 2;
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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SET DEBUG_SYNC= 'ib_after_row_insert_step SIGNAL flushed1 WAIT_FOR opened1';
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insert into t1 values(NULL);
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SELECT * FROM t1;
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id
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1
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3
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
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SET DEBUG_SYNC= 'now SIGNAL opened1';
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SELECT * FROM t1;
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id
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1
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3
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5
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
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DROP TABLE t1;
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CREATE TABLE t1(id INT AUTO_INCREMENT PRIMARY KEY)ENGINE=INNODB;
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# SETTING auto_increment_increment IN CONNECTION DEFAULT
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SET AUTO_INCREMENT_INCREMENT = 1;
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INSERT INTO t1 VALUES(NULL);
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SELECT * FROM t1;
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id
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1
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=latin1
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SET DEBUG_SYNC = 'now SIGNAL flushed';
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# SETTING auto_increment_increment in connection1
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SET AUTO_INCREMENT_INCREMENT = 2;
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SET DEBUG_SYNC= 'now WAIT_FOR flushed';
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SET DEBUG_SYNC= 'ib_after_row_insert SIGNAL opened WAIT_FOR flushed1';
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INSERT INTO t1 values(NULL);
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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SET DEBUG_SYNC= 'ib_after_row_insert_step SIGNAL flushed1 WAIT_FOR opened1';
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INSERT INTO t1 VALUES(NULL);
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SELECT * FROM t1;
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id
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1
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3
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=latin1
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SET DEBUG_SYNC= 'now SIGNAL opened1';
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SELECT * FROM t1;
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id
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1
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3
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5
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=latin1
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DROP TABLE t1;
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SET DEBUG_SYNC='RESET';

‎mysql-test/suite/innodb/t/autoinc_debug.test‎

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--source include/have_innodb.inc
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--source include/have_debug.inc
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--source include/not_embedded.inc
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# Two parallel connection with autoinc column after restart.
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CREATE TABLE t1 (id INT AUTO_INCREMENT PRIMARY KEY)ENGINE=INNODB;
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--echo # SETTING auto_increment_increment IN CONNECTION DEFAULT
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SET AUTO_INCREMENT_INCREMENT = 1;
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INSERT INTO t1 VALUES(NULL);
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SELECT * FROM t1;
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SHOW CREATE TABLE t1;
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--source include/restart_mysqld.inc
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--echo # SETTING auto_increment_increment IN CONNECTION1
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SET AUTO_INCREMENT_INCREMENT = 2;
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SET DEBUG_SYNC= 'ib_after_row_insert SIGNAL opened WAIT_FOR flushed1';
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SEND INSERT INTO t1 VALUES(NULL);
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connect(con1, localhost, root,,);
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SET AUTO_INCREMENT_INCREMENT = 2;
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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SET DEBUG_SYNC= 'ib_after_row_insert_step SIGNAL flushed1 WAIT_FOR opened1';
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send insert into t1 values(NULL);
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connection default;
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reap;
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SELECT * FROM t1;
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SHOW CREATE TABLE t1;
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SET DEBUG_SYNC= 'now SIGNAL opened1';
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connection con1;
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reap;
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SELECT * FROM t1;
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SHOW CREATE TABLE t1;
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connection default;
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disconnect con1;
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DROP TABLE t1;
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# Two parallel connection with autoinc column without restart.
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CREATE TABLE t1(id INT AUTO_INCREMENT PRIMARY KEY)ENGINE=INNODB;
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--echo # SETTING auto_increment_increment IN CONNECTION DEFAULT
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SET AUTO_INCREMENT_INCREMENT = 1;
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INSERT INTO t1 VALUES(NULL);
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SELECT * FROM t1;
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SHOW CREATE TABLE t1;
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SET DEBUG_SYNC = 'now SIGNAL flushed';
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connect(con1, localhost, root,,);
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--echo # SETTING auto_increment_increment in connection1
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SET AUTO_INCREMENT_INCREMENT = 2;
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SET DEBUG_SYNC= 'now WAIT_FOR flushed';
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SET DEBUG_SYNC= 'ib_after_row_insert SIGNAL opened WAIT_FOR flushed1';
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send INSERT INTO t1 values(NULL);
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connection default;
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SET DEBUG_SYNC= 'now WAIT_FOR opened';
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SET DEBUG_SYNC= 'ib_after_row_insert_step SIGNAL flushed1 WAIT_FOR opened1';
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send INSERT INTO t1 VALUES(NULL);
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connection con1;
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reap;
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SELECT * FROM t1;
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SHOW CREATE TABLE t1;
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SET DEBUG_SYNC= 'now SIGNAL opened1';
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disconnect con1;
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connection default;
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reap;
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SELECT * FROM t1;
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SHOW CREATE TABLE t1;
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DROP TABLE t1;
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SET DEBUG_SYNC='RESET';

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