--source include/have_innodb.inc
--source include/have_log_bin.inc
--source include/have_binlog_format_mixed_or_statement.inc
--source include/binlog_start_pos.inc

RESET MASTER;

# Test that we get the correct binlog position from START TRANSACTION WITH
# CONSISTENT SNAPSHOT even when other transactions are active.

connect(con1,localhost,root,,);
connect(con2,localhost,root,,);
connect(con3,localhost,root,,);
connect(con4,localhost,root,,);

connection default;

CREATE TABLE t1 (a INT, b VARCHAR(100), PRIMARY KEY (a,b)) ENGINE=innodb;
let pos=`select $binlog_start_pos + 254`;
--replace_result $pos <pos>
SHOW MASTER STATUS;
--replace_result $pos <pos>
SHOW STATUS LIKE 'binlog_snapshot_%';
BEGIN;
INSERT INTO t1 VALUES (0, "");

connection con1;
BEGIN;
INSERT INTO t1 VALUES (1, "");

connection con2;
CREATE TABLE t2 (a INT PRIMARY KEY) ENGINE=myisam;
BEGIN;
INSERT INTO t1 VALUES (2, "first");
INSERT INTO t2 VALUES (2);
INSERT INTO t1 VALUES (2, "second");

connection default;
COMMIT;

SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
START TRANSACTION WITH CONSISTENT SNAPSHOT;

connection con3;
BEGIN;
INSERT INTO t1 VALUES (3, "");
INSERT INTO t2 VALUES (3);

connection con4;
BEGIN;
INSERT INTO t1 VALUES (4, "");
COMMIT;

connection default;
SELECT * FROM t1 ORDER BY a,b;
let pos=`select $binlog_start_pos + 788`;
--replace_result $pos <pos>
SHOW STATUS LIKE 'binlog_snapshot_%';
let pos=`select $binlog_start_pos + 1164`;
--replace_result $pos <pos>
SHOW MASTER STATUS;
SELECT * FROM t2 ORDER BY a;

connection con1;
COMMIT;

connection con2;
COMMIT;

connection con3;
COMMIT;
FLUSH LOGS;
--source include/wait_for_binlog_checkpoint.inc

connection default;
SELECT * FROM t1 ORDER BY a,b;
let pos=`select $binlog_start_pos + 788`;
--replace_result $pos <pos>
SHOW STATUS LIKE 'binlog_snapshot_%';
let pos=`select $binlog_start_pos + 131`;
--replace_result $pos <pos>
SHOW MASTER STATUS;
COMMIT;
--replace_result $pos <pos>
SHOW STATUS LIKE 'binlog_snapshot_%';
--replace_result $pos <pos>
SHOW MASTER STATUS;

source include/show_binlog_events.inc;


--echo *** MDEV-7310: last_commit_pos_offset set to wrong value after binlog rotate in group commit ***

SET @old_size= @@GLOBAL.max_binlog_size;
SET GLOBAL max_binlog_size=4096;

CREATE TABLE t3 (a INT PRIMARY KEY, b VARBINARY(8192)) ENGINE=MyISAM;
INSERT INTO t3 VALUES (10, '');
--let $bigdata= `SELECT REPEAT('a', 5000)`
eval INSERT INTO t3 VALUES (11, '$bigdata');

# The bug was that binlog_snapshot_file pointed to the new file after binlog
# rotation, but binlog_snapshot_position was the offset in the old file before
# binlog rotation. So the position was invalid.
# So here, we check that the values are consistent with SHOW MASTER STATUS,
# which uses a different code path and did not have the bug.

--source include/wait_for_binlog_checkpoint.inc
--let $snap_file= query_get_value(SHOW STATUS LIKE 'binlog_snapshot_file', Value, 1)
--let $snap_pos= query_get_value(SHOW STATUS LIKE 'binlog_snapshot_position', Value, 1)

--let $master_file= query_get_value(SHOW MASTER STATUS, File, 1)
--let $master_pos= query_get_value(SHOW MASTER STATUS, Position, 1)

--disable_query_log
eval SET @errmsg= 'ERROR: ($snap_file, $snap_pos) != ($master_file, $master_pos)';
eval SELECT IF('$snap_file' = '$master_file' AND $snap_pos = $master_pos, 'OK', @errmsg) AS test_result;
--enable_query_log

SET GLOBAL max_binlog_size=@old_size;


DROP TABLE t1,t2, t3;