MDEV-35693: Improve SHOW REPLICA STATUS column sizes

Resize the types and widths of SHOW REPLICA STATUS (technically `INFORMATION_SCHEMA.SLAVE_STATUS`) columns to better match their possible values In case of intentionally but absurdly long lists, text columns that list an uncapped number of elements have expanded to accept as many bytes as we could support. Particularly, the first-gen `Replicate_` filters were incorrectly typed as singlular `Name()`s during MDEV-33526. Under `Name`s’ 64-char limit, they could overflow (read: truncate) even before their lengths got absurd. In response to `‘MAX_SLAVE_ERRMSG’ was not declared in this scope` in Embedded builds, a new `#ifdef HAVE_REPLICATION` guard wraps `slave_status_info` to skip this unused data in Replication-less builds. For testing, this commit forward-ports a modified cherry-pick of #3795 (the latter targets our oldest maintained LTS as part of MDEV-35948). > Assert that 1st-gen `replicate_*` filter variables display > their input – including long but reasonable lists – > correctly (without truncation) in > * direct SELECT > * [semi-new] INFORMATION_SCHEMA.GLOBAL_VARIABLES.VARIABLE_VALUE > * [new] SHOW REPLICA STATUS Reviewed-by: Brandon Nesterenko <brandon.nesterenko@mariadb.com>
MariaDB · Feb 1, 2025 · aaa02f6 · aaa02f6
1 parent 01fafd4
commit aaa02f6
Show file tree

Hide file tree

Showing 16 changed files with 294 additions and 94 deletions.
diff --git a/mysql-test/main/information_schema.result b/mysql-test/main/information_schema.result
@@ -1341,7 +1341,7 @@ table_schema='information_schema' and
 group by column_type order by num;
 column_type	group_concat(table_schema, '.', table_name)	num
 varchar(7)	information_schema.ROUTINES,information_schema.VIEWS,information_schema.SLAVE_STATUS	3
-varchar(20)	information_schema.ALL_PLUGINS,information_schema.ALL_PLUGINS,information_schema.ALL_PLUGINS,information_schema.FILES,information_schema.FILES,information_schema.PLUGINS,information_schema.PLUGINS,information_schema.PLUGINS,information_schema.PROFILING,information_schema.SLAVE_STATUS	10
+varchar(20)	information_schema.ALL_PLUGINS,information_schema.ALL_PLUGINS,information_schema.ALL_PLUGINS,information_schema.FILES,information_schema.FILES,information_schema.PLUGINS,information_schema.PLUGINS,information_schema.PLUGINS,information_schema.PROFILING	9
 create table t1(f1 char(1) not null, f2 char(9) not null)
 default character set utf8;
 select CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH from

diff --git a/mysql-test/suite/funcs_1/r/is_columns_is.result b/mysql-test/suite/funcs_1/r/is_columns_is.result
diff --git a/mysql-test/suite/sys_vars/r/replicate_do_db_basic.result b/mysql-test/suite/sys_vars/r/replicate_do_db_basic.result
@@ -1,3 +1,4 @@
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
 #
 # Basic testing of replicate_do_db.
 #
@@ -17,6 +18,20 @@ SET @@GLOBAL.replicate_do_db=1.1;
 ERROR 42000: Incorrect argument type to variable 'replicate_do_db'
 SET @@GLOBAL.replicate_do_db=1e1;
 ERROR 42000: Incorrect argument type to variable 'replicate_do_db'
+# Argument size acceptance.
+SELECT GROUP_CONCAT(CONCAT("database_name_", seq) SEPARATOR ",")
+INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+LENGTH(@name)
+127
+SET @@GLOBAL.replicate_do_db= @name;
+SELECT @@GLOBAL.replicate_do_db;
+@@GLOBAL.replicate_do_db
+database_name_1,database_name_2,database_name_3,database_name_4,database_name_5,database_name_6,database_name_7,database_name_8
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_db';
+VARIABLE_VALUE
+database_name_1,database_name_2,database_name_3,database_name_4,database_name_5,database_name_6,database_name_7,database_name_8
+Replicate_Do_DB = 'database_name_1,database_name_2,database_name_3,database_name_4,database_name_5,database_name_6,database_name_7,database_name_8'
 # Argument syntax.
 SET @@GLOBAL.replicate_do_db="db1,,,,,db3";
 SELECT @@GLOBAL.replicate_do_db;
@@ -25,6 +40,7 @@ db1,db3
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_db';
 VARIABLE_NAME	VARIABLE_VALUE
 REPLICATE_DO_DB	db1,db3
+Replicate_Do_DB = 'db1,db3'
 SET @@GLOBAL.replicate_do_db="db1,,,db2,,,db3";
 SELECT @@GLOBAL.replicate_do_db;
 @@GLOBAL.replicate_do_db

diff --git a/mysql-test/suite/sys_vars/r/replicate_do_table_basic.result b/mysql-test/suite/sys_vars/r/replicate_do_table_basic.result
@@ -1,3 +1,4 @@
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
 #
 # Basic testing of replicate_do_table.
 #
@@ -24,6 +25,20 @@ SET @@GLOBAL.replicate_do_table="test.t1, t2";
 ERROR HY000: Incorrect arguments to SET
 SET @@GLOBAL.replicate_do_table="test.,t1";
 ERROR HY000: Incorrect arguments to SET
+# Argument size acceptance.
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+LENGTH(@name)
+255
+SET @@GLOBAL.replicate_do_table= @name;
+SELECT @@GLOBAL.replicate_do_table;
+@@GLOBAL.replicate_do_table
+database_name.long_table_name_5,database_name.long_table_name_1,database_name.long_table_name_6,database_name.long_table_name_2,database_name.long_table_name_7,database_name.long_table_name_3,database_name.long_table_name_8,database_name.long_table_name_4
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_table';
+VARIABLE_VALUE
+database_name.long_table_name_5,database_name.long_table_name_1,database_name.long_table_name_6,database_name.long_table_name_2,database_name.long_table_name_7,database_name.long_table_name_3,database_name.long_table_name_8,database_name.long_table_name_4
+Replicate_Do_Table = 'database_name.long_table_name_5,database_name.long_table_name_1,database_name.long_table_name_6,database_name.long_table_name_2,database_name.long_table_name_7,database_name.long_table_name_3,database_name.long_table_name_8,database_name.long_table_name_4'
 # Argument syntax.
 SET @@GLOBAL.replicate_do_table="test.t1,,,,,test.t3";
 SELECT @@GLOBAL.replicate_do_table;
@@ -32,6 +47,7 @@ test.t3,test.t1
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_table';
 VARIABLE_NAME	VARIABLE_VALUE
 REPLICATE_DO_TABLE	test.t3,test.t1
+Replicate_Do_Table = 'test.t3,test.t1'
 SET @@GLOBAL.replicate_do_table="test.t1,,,test2.t2,,,test.t3";
 SELECT @@GLOBAL.replicate_do_table;
 @@GLOBAL.replicate_do_table

diff --git a/mysql-test/suite/sys_vars/r/replicate_ignore_db_basic.result b/mysql-test/suite/sys_vars/r/replicate_ignore_db_basic.result
@@ -1,3 +1,4 @@
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
 #
 # Basic testing of replicate_ignore_db.
 #
@@ -17,6 +18,20 @@ SET @@GLOBAL.replicate_ignore_db=1.1;
 ERROR 42000: Incorrect argument type to variable 'replicate_ignore_db'
 SET @@GLOBAL.replicate_ignore_db=1e1;
 ERROR 42000: Incorrect argument type to variable 'replicate_ignore_db'
+# Argument size acceptance.
+SELECT GROUP_CONCAT(CONCAT("database_name_", seq) SEPARATOR ",")
+INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+LENGTH(@name)
+127
+SET @@GLOBAL.replicate_ignore_db= @name;
+SELECT @@GLOBAL.replicate_ignore_db;
+@@GLOBAL.replicate_ignore_db
+database_name_1,database_name_2,database_name_3,database_name_4,database_name_5,database_name_6,database_name_7,database_name_8
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_db';
+VARIABLE_VALUE
+database_name_1,database_name_2,database_name_3,database_name_4,database_name_5,database_name_6,database_name_7,database_name_8
+Replicate_Ignore_DB = 'database_name_1,database_name_2,database_name_3,database_name_4,database_name_5,database_name_6,database_name_7,database_name_8'
 # Argument syntax.
 SET @@GLOBAL.replicate_ignore_db="db1,,,,,db3";
 SELECT @@GLOBAL.replicate_ignore_db;
@@ -25,6 +40,7 @@ db1,db3
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_db';
 VARIABLE_NAME	VARIABLE_VALUE
 REPLICATE_IGNORE_DB	db1,db3
+Replicate_Ignore_DB = 'db1,db3'
 SET @@GLOBAL.replicate_ignore_db="db1,,,db2,,,db3";
 SELECT @@GLOBAL.replicate_ignore_db;
 @@GLOBAL.replicate_ignore_db

diff --git a/mysql-test/suite/sys_vars/r/replicate_ignore_table_basic.result b/mysql-test/suite/sys_vars/r/replicate_ignore_table_basic.result
@@ -1,3 +1,4 @@
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
 #
 # Basic testing of replicate_ignore_table.
 #
@@ -24,6 +25,20 @@ SET @@GLOBAL.replicate_ignore_table="test.t1, t2";
 ERROR HY000: Incorrect arguments to SET
 SET @@GLOBAL.replicate_ignore_table="test.,t1";
 ERROR HY000: Incorrect arguments to SET
+# Argument size acceptance.
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+LENGTH(@name)
+255
+SET @@GLOBAL.replicate_ignore_table= @name;
+SELECT @@GLOBAL.replicate_ignore_table;
+@@GLOBAL.replicate_ignore_table
+database_name.long_table_name_5,database_name.long_table_name_1,database_name.long_table_name_6,database_name.long_table_name_2,database_name.long_table_name_7,database_name.long_table_name_3,database_name.long_table_name_8,database_name.long_table_name_4
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_table';
+VARIABLE_VALUE
+database_name.long_table_name_5,database_name.long_table_name_1,database_name.long_table_name_6,database_name.long_table_name_2,database_name.long_table_name_7,database_name.long_table_name_3,database_name.long_table_name_8,database_name.long_table_name_4
+Replicate_Ignore_Table = 'database_name.long_table_name_5,database_name.long_table_name_1,database_name.long_table_name_6,database_name.long_table_name_2,database_name.long_table_name_7,database_name.long_table_name_3,database_name.long_table_name_8,database_name.long_table_name_4'
 # Argument syntax.
 SET @@GLOBAL.replicate_ignore_table="test.t1,,,,,test.t3";
 SELECT @@GLOBAL.replicate_ignore_table;
@@ -32,6 +47,7 @@ test.t3,test.t1
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_table';
 VARIABLE_NAME	VARIABLE_VALUE
 REPLICATE_IGNORE_TABLE	test.t3,test.t1
+Replicate_Ignore_Table = 'test.t3,test.t1'
 SET @@GLOBAL.replicate_ignore_table="test.t1,,,test2.t2,,,test.t3";
 SELECT @@GLOBAL.replicate_ignore_table;
 @@GLOBAL.replicate_ignore_table

diff --git a/mysql-test/suite/sys_vars/r/replicate_wild_do_table_basic.result b/mysql-test/suite/sys_vars/r/replicate_wild_do_table_basic.result
@@ -1,3 +1,4 @@
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
 #
 # Basic testing of replicate_wild_do_table.
 #
@@ -24,6 +25,20 @@ SET @@GLOBAL.replicate_wild_do_table="test.t, t2";
 ERROR HY000: Incorrect arguments to SET
 SET @@GLOBAL.replicate_wild_do_table="test.,t1";
 ERROR HY000: Incorrect arguments to SET
+# Argument size acceptance.
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+LENGTH(@name)
+255
+SET @@GLOBAL.replicate_wild_do_table= @name;
+SELECT @@GLOBAL.replicate_wild_do_table;
+@@GLOBAL.replicate_wild_do_table
+database_name.long_table_name_1,database_name.long_table_name_2,database_name.long_table_name_3,database_name.long_table_name_4,database_name.long_table_name_5,database_name.long_table_name_6,database_name.long_table_name_7,database_name.long_table_name_8
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_wild_do_table';
+VARIABLE_VALUE
+database_name.long_table_name_1,database_name.long_table_name_2,database_name.long_table_name_3,database_name.long_table_name_4,database_name.long_table_name_5,database_name.long_table_name_6,database_name.long_table_name_7,database_name.long_table_name_8
+Replicate_Wild_Do_Table = 'database_name.long_table_name_1,database_name.long_table_name_2,database_name.long_table_name_3,database_name.long_table_name_4,database_name.long_table_name_5,database_name.long_table_name_6,database_name.long_table_name_7,database_name.long_table_name_8'
 # Argument syntax.
 SET @@GLOBAL.replicate_wild_do_table="test.%,,,,,test.t3";
 SELECT @@GLOBAL.replicate_wild_do_table;
@@ -32,6 +47,7 @@ test.%,test.t3
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_wild_do_table';
 VARIABLE_NAME	VARIABLE_VALUE
 REPLICATE_WILD_DO_TABLE	test.%,test.t3
+Replicate_Wild_Do_Table = 'test.%,test.t3'
 SET @@GLOBAL.replicate_wild_do_table="test.t1,,,test2.%,,,test.t3";
 SELECT @@GLOBAL.replicate_wild_do_table;
 @@GLOBAL.replicate_wild_do_table

diff --git a/mysql-test/suite/sys_vars/r/replicate_wild_ignore_table_basic.result b/mysql-test/suite/sys_vars/r/replicate_wild_ignore_table_basic.result
@@ -1,3 +1,4 @@
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
 #
 # Basic testing of replicate_wild_ignore_table.
 #
@@ -24,6 +25,20 @@ SET @@GLOBAL.replicate_wild_ignore_table="test.t, t2";
 ERROR HY000: Incorrect arguments to SET
 SET @@GLOBAL.replicate_wild_ignore_table="test.,t1";
 ERROR HY000: Incorrect arguments to SET
+# Argument size acceptance.
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+LENGTH(@name)
+255
+SET @@GLOBAL.replicate_wild_ignore_table= @name;
+SELECT @@GLOBAL.replicate_wild_ignore_table;
+@@GLOBAL.replicate_wild_ignore_table
+database_name.long_table_name_1,database_name.long_table_name_2,database_name.long_table_name_3,database_name.long_table_name_4,database_name.long_table_name_5,database_name.long_table_name_6,database_name.long_table_name_7,database_name.long_table_name_8
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_wild_ignore_table';
+VARIABLE_VALUE
+database_name.long_table_name_1,database_name.long_table_name_2,database_name.long_table_name_3,database_name.long_table_name_4,database_name.long_table_name_5,database_name.long_table_name_6,database_name.long_table_name_7,database_name.long_table_name_8
+Replicate_Wild_Ignore_Table = 'database_name.long_table_name_1,database_name.long_table_name_2,database_name.long_table_name_3,database_name.long_table_name_4,database_name.long_table_name_5,database_name.long_table_name_6,database_name.long_table_name_7,database_name.long_table_name_8'
 # Argument syntax.
 SET @@GLOBAL.replicate_wild_ignore_table="test.%,,,,,test.t3";
 SELECT @@GLOBAL.replicate_wild_ignore_table;
@@ -32,6 +47,7 @@ test.%,test.t3
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_wild_ignore_table';
 VARIABLE_NAME	VARIABLE_VALUE
 REPLICATE_WILD_IGNORE_TABLE	test.%,test.t3
+Replicate_Wild_Ignore_Table = 'test.%,test.t3'
 SET @@GLOBAL.replicate_wild_ignore_table="test.t1,,,test2.%,,,test.t3";
 SELECT @@GLOBAL.replicate_wild_ignore_table;
 @@GLOBAL.replicate_wild_ignore_table

diff --git a/mysql-test/suite/sys_vars/t/replicate_do_db_basic.test b/mysql-test/suite/sys_vars/t/replicate_do_db_basic.test
@@ -1,4 +1,8 @@
+--source include/have_sequence.inc
+# have show_slave_status
 --source include/not_embedded.inc
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
+--let $status_items= Replicate_Do_DB
 
 --echo #
 --echo # Basic testing of replicate_do_db.
@@ -23,11 +27,23 @@ SET @@GLOBAL.replicate_do_db=1.1;
 --error ER_WRONG_TYPE_FOR_VAR
 SET @@GLOBAL.replicate_do_db=1e1;
 
+# MDEV-35693 Replicate_* fields of Show-Slave-Status display truncated
+--echo # Argument size acceptance.
+
+SELECT GROUP_CONCAT(CONCAT("database_name_", seq) SEPARATOR ",")
+  INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+SET @@GLOBAL.replicate_do_db= @name;
+SELECT @@GLOBAL.replicate_do_db;
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_db';
+--source include/show_slave_status.inc
+
 --echo # Argument syntax.
 
 SET @@GLOBAL.replicate_do_db="db1,,,,,db3";
 SELECT @@GLOBAL.replicate_do_db;
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_db';
+--source include/show_slave_status.inc
 
 SET @@GLOBAL.replicate_do_db="db1,,,db2,,,db3";
 SELECT @@GLOBAL.replicate_do_db;

diff --git a/mysql-test/suite/sys_vars/t/replicate_do_table_basic.test b/mysql-test/suite/sys_vars/t/replicate_do_table_basic.test
@@ -1,4 +1,8 @@
+--source include/have_sequence.inc
+# have show_slave_status
 --source include/not_embedded.inc
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
+--let $status_items= Replicate_Do_Table
 
 --echo #
 --echo # Basic testing of replicate_do_table.
@@ -32,11 +36,23 @@ SET @@GLOBAL.replicate_do_table="test.t1, t2";
 --error ER_WRONG_ARGUMENTS
 SET @@GLOBAL.replicate_do_table="test.,t1";
 
+# MDEV-35693 Replicate_* fields of Show-Slave-Status display truncated
+--echo # Argument size acceptance.
+
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+  INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+SET @@GLOBAL.replicate_do_table= @name;
+SELECT @@GLOBAL.replicate_do_table;
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_table';
+--source include/show_slave_status.inc
+
 --echo # Argument syntax.
 
 SET @@GLOBAL.replicate_do_table="test.t1,,,,,test.t3";
 SELECT @@GLOBAL.replicate_do_table;
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_do_table';
+--source include/show_slave_status.inc
 
 SET @@GLOBAL.replicate_do_table="test.t1,,,test2.t2,,,test.t3";
 SELECT @@GLOBAL.replicate_do_table;

diff --git a/mysql-test/suite/sys_vars/t/replicate_ignore_db_basic.test b/mysql-test/suite/sys_vars/t/replicate_ignore_db_basic.test
@@ -1,4 +1,8 @@
+--source include/have_sequence.inc
+# have show_slave_status
 --source include/not_embedded.inc
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
+--let $status_items= Replicate_Ignore_DB
 
 --echo #
 --echo # Basic testing of replicate_ignore_db.
@@ -23,11 +27,23 @@ SET @@GLOBAL.replicate_ignore_db=1.1;
 --error ER_WRONG_TYPE_FOR_VAR
 SET @@GLOBAL.replicate_ignore_db=1e1;
 
+# MDEV-35693 Replicate_* fields of Show-Slave-Status display truncated
+--echo # Argument size acceptance.
+
+SELECT GROUP_CONCAT(CONCAT("database_name_", seq) SEPARATOR ",")
+  INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+SET @@GLOBAL.replicate_ignore_db= @name;
+SELECT @@GLOBAL.replicate_ignore_db;
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_db';
+--source include/show_slave_status.inc
+
 --echo # Argument syntax.
 
 SET @@GLOBAL.replicate_ignore_db="db1,,,,,db3";
 SELECT @@GLOBAL.replicate_ignore_db;
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_db';
+--source include/show_slave_status.inc
 
 SET @@GLOBAL.replicate_ignore_db="db1,,,db2,,,db3";
 SELECT @@GLOBAL.replicate_ignore_db;

diff --git a/mysql-test/suite/sys_vars/t/replicate_ignore_table_basic.test b/mysql-test/suite/sys_vars/t/replicate_ignore_table_basic.test
@@ -1,4 +1,8 @@
+--source include/have_sequence.inc
+# have show_slave_status
 --source include/not_embedded.inc
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
+--let $status_items= Replicate_Ignore_Table
 
 --echo #
 --echo # Basic testing of replicate_ignore_table.
@@ -32,11 +36,23 @@ SET @@GLOBAL.replicate_ignore_table="test.t1, t2";
 --error ER_WRONG_ARGUMENTS
 SET @@GLOBAL.replicate_ignore_table="test.,t1";
 
+# MDEV-35693 Replicate_* fields of Show-Slave-Status display truncated
+--echo # Argument size acceptance.
+
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+  INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+SET @@GLOBAL.replicate_ignore_table= @name;
+SELECT @@GLOBAL.replicate_ignore_table;
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_table';
+--source include/show_slave_status.inc
+
 --echo # Argument syntax.
 
 SET @@GLOBAL.replicate_ignore_table="test.t1,,,,,test.t3";
 SELECT @@GLOBAL.replicate_ignore_table;
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_ignore_table';
+--source include/show_slave_status.inc
 
 SET @@GLOBAL.replicate_ignore_table="test.t1,,,test2.t2,,,test.t3";
 SELECT @@GLOBAL.replicate_ignore_table;

diff --git a/mysql-test/suite/sys_vars/t/replicate_wild_do_table_basic.test b/mysql-test/suite/sys_vars/t/replicate_wild_do_table_basic.test
@@ -1,4 +1,8 @@
+--source include/have_sequence.inc
+# have show_slave_status
 --source include/not_embedded.inc
+CHANGE MASTER TO master_host='127.0.0.1', master_user='root', master_ssl_verify_server_cert=0;
+--let $status_items= Replicate_Wild_Do_Table
 
 --echo #
 --echo # Basic testing of replicate_wild_do_table.
@@ -32,11 +36,23 @@ SET @@GLOBAL.replicate_wild_do_table="test.t, t2";
 --error ER_WRONG_ARGUMENTS
 SET @@GLOBAL.replicate_wild_do_table="test.,t1";
 
+# MDEV-35693 Replicate_* fields of Show-Slave-Status display truncated
+--echo # Argument size acceptance.
+
+SELECT GROUP_CONCAT(CONCAT("database_name.long_table_name_", seq) SEPARATOR ",")
+  INTO @name FROM seq_1_to_8;
+SELECT LENGTH(@name);
+SET @@GLOBAL.replicate_wild_do_table= @name;
+SELECT @@GLOBAL.replicate_wild_do_table;
+SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_wild_do_table';
+--source include/show_slave_status.inc
+
 --echo # Argument syntax.
 
 SET @@GLOBAL.replicate_wild_do_table="test.%,,,,,test.t3";
 SELECT @@GLOBAL.replicate_wild_do_table;
 SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_wild_do_table';
+--source include/show_slave_status.inc
 
 SET @@GLOBAL.replicate_wild_do_table="test.t1,,,test2.%,,,test.t3";
 SELECT @@GLOBAL.replicate_wild_do_table;