Row format replication between LONGBLOB and MEDIUMBLOB does not work for long values

-- source include/have_binlog_format_row.inc

-- source include/master-slave.inc

let mst=MEDIUMBLOB;

let slv=LONGBLOB;

let val=REPEAT('a',66000);

#let mst=LONGBLOB;

#let slv=MEDIUMBLOB;

#let val=REPEAT('a',66000);

connection master;

SET sql_mode='';

--eval CREATE TABLE t1 (a $mst);

sync_slave_with_master;

connection slave;

SET @tmp=@@GLOBAL.SLAVE_TYPE_CONVERSIONS;

eval SET @@GLOBAL.SLAVE_TYPE_CONVERSIONS = 'ALL_NON_LOSSY,ALL_LOSSY';

--eval ALTER TABLE t1 MODIFY a $slv;

connection master;

--eval INSERT INTO t1 (a) VALUES ($val);

SELECT LENGTH(a) FROM t1;

sync_slave_with_master;

SHOW CREATE TABLE t1;

SELECT LENGTH(a) FROM t1;

connection master;

DROP TABLE t1;

sync_slave_with_master;

connection slave;

SET @@GLOBAL.SLAVE_TYPE_CONVERSIONS=@tmp;

connection master;

SET sql_mode=DEFAULT;

--source include/rpl_end.inc

==============================================================================

TEST                                      RESULT   TIME (ms) or COMMENT

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worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019

include/master-slave.inc

[connection master]

connection master;

SET sql_mode='';

CREATE TABLE t1 (a MEDIUMBLOB);;

connection slave;

connection slave;

SET @tmp=@@GLOBAL.SLAVE_TYPE_CONVERSIONS;

SET @@GLOBAL.SLAVE_TYPE_CONVERSIONS = 'ALL_NON_LOSSY,ALL_LOSSY';

ALTER TABLE t1 MODIFY a LONGBLOB;;

connection master;

INSERT INTO t1 (a) VALUES (REPEAT('a',66000));;

SELECT LENGTH(a) FROM t1;

LENGTH(a)

66000

connection slave;

SHOW CREATE TABLE t1;

Table	Create Table

t1	CREATE TABLE `t1` (

  `a` longblob DEFAULT NULL

) ENGINE=MyISAM DEFAULT CHARSET=latin1

SELECT LENGTH(a) FROM t1;

LENGTH(a)

65535

connection master;

DROP TABLE t1;

connection slave;

connection slave;

SET @@GLOBAL.SLAVE_TYPE_CONVERSIONS=@tmp;

connection master;

SET sql_mode=DEFAULT;

include/rpl_end.inc

rpl.AAA02 'row'                          [ pass ]   1222

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The servers were restarted 0 times

Spent 1.222 of 6 seconds executing testcases

Completed: All 1 tests were successful.