# ==== Purpose ====
#
# Check replication protocol packet size handling
#
# ==== Related bugs ====
# Bug#19402 SQL close to the size of the max_allowed_packet fails on slave
# BUG#23755: Replicated event larger that max_allowed_packet infinitely re-transmits
# BUG#42914: No LAST_IO_ERROR for max_allowed_packet errors
# BUG#55322: SHOW BINLOG EVENTS increases @@SESSION.MAX_ALLOWED_PACKET

# max-out size db name 
source include/master-slave.inc;
source include/have_binlog_format_row.inc;
call mtr.add_suppression("Slave I/O: Got a packet bigger than 'slave_max_allowed_packet' bytes, Error_code: 1153");
call mtr.add_suppression("Log entry on master is longer than slave_max_allowed_packet");
let $db= DB_NAME_OF_MAX_LENGTH_AKA_NAME_LEN_64_BYTES_____________________;
disable_warnings;
eval drop database if exists $db;
enable_warnings;
eval create database $db;

connection master;
let $old_max_allowed_packet= `SELECT @@global.max_allowed_packet`;
let $old_net_buffer_length= `SELECT @@global.net_buffer_length`;
let $old_slave_max_allowed_packet= `SELECT @@global.slave_max_allowed_packet`;
SET @@global.max_allowed_packet=1024;
SET @@global.net_buffer_length=1024;

sync_slave_with_master;
# Restart slave for setting to take effect
source include/stop_slave.inc;
source include/start_slave.inc;

# Reconnect to master for new setting to take effect
disconnect master;

# alas, can't use eval here; if db name changed apply the change here
connect (master,localhost,root,,DB_NAME_OF_MAX_LENGTH_AKA_NAME_LEN_64_BYTES_____________________);

connection master;
select @@net_buffer_length, @@max_allowed_packet;

create table `t1` (`f1` LONGTEXT) ENGINE=MyISAM;

INSERT INTO `t1`(`f1`) VALUES ('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1023');

sync_slave_with_master;
eval select count(*) from `$db`.`t1` /* must be 1 */;

SHOW STATUS LIKE 'Slave_running';
select * from information_schema.session_status where variable_name= 'SLAVE_RUNNING';
connection master;
eval drop database $db;

sync_slave_with_master;

#
# Bug #23755: Replicated event larger that max_allowed_packet infinitely re-transmits
#
# Check that a situation when the size of event on the master is greater than 
# max_allowed_packet on the slave does not lead to infinite re-transmits.

connection master;

# Change the max packet size on master

SET @@global.max_allowed_packet=4096;
SET @@global.net_buffer_length=4096;

# Restart slave for new setting to take effect
connection slave;
source include/stop_slave.inc;
source include/start_slave.inc;

# Reconnect to master for new setting to take effect
disconnect master;
connect (master, localhost, root);
connection master;

CREATE TABLE `t1` (`f1` LONGTEXT) ENGINE=MyISAM;

sync_slave_with_master;

connection master;

INSERT INTO `t1`(`f1`) VALUES ('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa2048');


#
# Bug#42914: The slave I/O thread must stop after trying to read the above
# event, However there is no Last_IO_Error report.
#

# The slave I/O thread must stop after trying to read the above event
connection slave;
# 1153 = ER_NET_PACKET_TOO_LARGE
--let $slave_io_errno= 1153
--let $show_slave_io_error= 1
--source include/wait_for_slave_io_error.inc

# TODO: this is needed because of BUG#55790. Remove once that is fixed.
--source include/stop_slave_sql.inc

#
# Bug#42914: On the master, if a binary log event is larger than
# max_allowed_packet, the error message ER_MASTER_FATAL_ERROR_READING_BINLOG
# is sent to a slave when it requests a dump from the master, thus leading the
# I/O thread to stop. However, there is no Last_IO_Error reported.
#

--let $rpl_only_running_threads= 1
--source include/rpl_reset.inc
--connection master
DROP TABLE t1;
--sync_slave_with_master


connection master;
CREATE TABLE t1 (f1 int PRIMARY KEY, f2 LONGTEXT, f3 LONGTEXT) ENGINE=MyISAM;
sync_slave_with_master;

connection master;
INSERT INTO t1(f1, f2, f3) VALUES(1, REPEAT('a', @@global.max_allowed_packet), REPEAT('b', @@global.max_allowed_packet));

connection slave;
# The slave I/O thread must stop after receiving
# 1153 = ER_NET_PACKET_TOO_LARGE
--let $slave_io_errno= 1153
--let $show_slave_io_error= 1
--source include/wait_for_slave_io_error.inc

# Remove the bad binlog and clear error status on slave.
STOP SLAVE;
RESET SLAVE;
--connection master
RESET MASTER;


#
# BUG#55322: SHOW BINLOG EVENTS increases @@SESSION.MAX_ALLOWED_PACKET
#
# In BUG#55322, @@session.max_allowed_packet increased each time SHOW
# BINLOG EVENTS was issued. To verify that this bug is fixed, we
# execute SHOW BINLOG EVENTS twice and check that max_allowed_packet
# never changes.  We turn off the result log because we don't care
# about the contents of the binlog.

--disable_result_log
SET @max_allowed_packet_0= @@session.max_allowed_packet;
SHOW BINLOG EVENTS;
SET @max_allowed_packet_1= @@session.max_allowed_packet;
SHOW BINLOG EVENTS;
SET @max_allowed_packet_2= @@session.max_allowed_packet;
--enable_result_log
if (`SELECT NOT(@max_allowed_packet_0 = @max_allowed_packet_1 AND @max_allowed_packet_1 = @max_allowed_packet_2)`)
{
  --echo ERROR: max_allowed_packet changed after executing SHOW BINLOG EVENTS
  --source include/show_rpl_debug_info.inc
  SELECT @max_allowed_packet_0, @max_allowed_packet_1, @max_allowed_packet_2;
  --die @max_allowed_packet changed after executing SHOW BINLOG EVENTS
}


--echo ==== clean up ====
connection master;
DROP TABLE t1;
eval SET @@global.max_allowed_packet= $old_max_allowed_packet;
eval SET @@global.net_buffer_length= $old_net_buffer_length;
eval SET @@global.slave_max_allowed_packet= $old_slave_max_allowed_packet;
# slave is stopped
connection slave;
DROP TABLE t1;

# Clear Last_IO_Error
RESET SLAVE;

--source include/rpl_end.inc
# End of tests
