MDEV-7481 Replace max_long_data_size functionality with max_allowed_packet

mysql-test/main/mysqld--help.result

@@ -567,10 +567,6 @@ The following specify which files/extra groups are read (specified before remain
  max_join_size records return an error
  --max-length-for-sort-data=# 
  Max number of bytes in sorted records
- --max-long-data-size=# 
- The maximum BLOB length to send to server from
- mysql_send_long_data API. Deprecated option; use
- max_allowed_packet instead.
  --max-password-errors=# 
  If there is more than this number of failed connect
  attempts due to invalid password, user will be blocked
@@ -1571,7 +1567,6 @@ max-error-count 64
 max-heap-table-size 16777216
 max-join-size 18446744073709551615
 max-length-for-sort-data 1024
-max-long-data-size 16777216
 max-password-errors 18446744073709551615
 max-prepared-stmt-count 16382
 max-recursive-iterations 18446744073709551615

mysql-test/main/variables.result

@@ -1532,9 +1532,6 @@ SET @@global.max_binlog_cache_size=DEFAULT;
 SET @@global.max_join_size=DEFAULT;
 SET @@global.key_buffer_size=@kbs;
 SET @@global.key_cache_block_size=@kcbs;
-select @@max_long_data_size > 0;
-@@max_long_data_size > 0
-1
 #
 # Bug#11766424  59527:
 # Assert in DECIMAL_BIN_SIZE: 

mysql-test/main/variables.test

@@ -1264,11 +1264,6 @@ SET @@global.max_join_size=DEFAULT;
 SET @@global.key_buffer_size=@kbs;
 SET @@global.key_cache_block_size=@kcbs;
 
-#
-# Bug#56976: added new start-up parameter
-#
-select @@max_long_data_size > 0;
-
 --echo #
 --echo # Bug#11766424  59527:
 --echo # Assert in DECIMAL_BIN_SIZE: 

mysql-test/suite/sys_vars/r/max_long_data_size_basic.result

-select @@global.max_long_data_size=20;
-@@global.max_long_data_size=20
-0
-select @@session.max_long_data_size;
-ERROR HY000: Variable 'max_long_data_size' is a GLOBAL variable
-SELECT @@global.max_long_data_size = VARIABLE_VALUE
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
-WHERE VARIABLE_NAME='max_long_data_size';
-@@global.max_long_data_size = VARIABLE_VALUE
-1
-set global max_long_data_size=1;
-ERROR HY000: Variable 'max_long_data_size' is a read only variable
-set session max_long_data_size=1;
-ERROR HY000: Variable 'max_long_data_size' is a read only variable

mysql-test/suite/sys_vars/r/sysvars_server_embedded,32bit.rdiff

@@ -521,15 +521,6 @@
  VARIABLE_COMMENT	Max number of bytes in sorted records
  NUMERIC_MIN_VALUE	4
  NUMERIC_MAX_VALUE	8388608
-@@ -1874,7 +1874,7 @@ READ_ONLY	NO
- COMMAND_LINE_ARGUMENT	REQUIRED
- VARIABLE_NAME	MAX_LONG_DATA_SIZE
- VARIABLE_SCOPE	GLOBAL
--VARIABLE_TYPE	BIGINT UNSIGNED
-+VARIABLE_TYPE	INT UNSIGNED
- VARIABLE_COMMENT	The maximum BLOB length to send to server from mysql_send_long_data API. Deprecated option; use max_allowed_packet instead.
- NUMERIC_MIN_VALUE	1024
- NUMERIC_MAX_VALUE	4294967295
 @@ -1904,7 +1904,7 @@ READ_ONLY	NO
  COMMAND_LINE_ARGUMENT	REQUIRED
  VARIABLE_NAME	MAX_RECURSIVE_ITERATIONS

mysql-test/suite/sys_vars/r/sysvars_server_embedded.result

@@ -1883,16 +1883,6 @@ NUMERIC_BLOCK_SIZE	1
 ENUM_VALUE_LIST	NULL
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
-VARIABLE_NAME	MAX_LONG_DATA_SIZE
-VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BIGINT UNSIGNED
-VARIABLE_COMMENT	The maximum BLOB length to send to server from mysql_send_long_data API. Deprecated option; use max_allowed_packet instead.
-NUMERIC_MIN_VALUE	1024
-NUMERIC_MAX_VALUE	4294967295
-NUMERIC_BLOCK_SIZE	1
-ENUM_VALUE_LIST	NULL
-READ_ONLY	YES
-COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	MAX_PASSWORD_ERRORS
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	INT UNSIGNED

mysql-test/suite/sys_vars/r/sysvars_server_notembedded,32bit.rdiff

@@ -521,15 +521,6 @@
  VARIABLE_COMMENT	Max number of bytes in sorted records
  NUMERIC_MIN_VALUE	4
  NUMERIC_MAX_VALUE	8388608
-@@ -2024,7 +2024,7 @@ READ_ONLY	NO
- COMMAND_LINE_ARGUMENT	REQUIRED
- VARIABLE_NAME	MAX_LONG_DATA_SIZE
- VARIABLE_SCOPE	GLOBAL
--VARIABLE_TYPE	BIGINT UNSIGNED
-+VARIABLE_TYPE	INT UNSIGNED
- VARIABLE_COMMENT	The maximum BLOB length to send to server from mysql_send_long_data API. Deprecated option; use max_allowed_packet instead.
- NUMERIC_MIN_VALUE	1024
- NUMERIC_MAX_VALUE	4294967295
 @@ -2054,7 +2054,7 @@ READ_ONLY	NO
  COMMAND_LINE_ARGUMENT	REQUIRED
  VARIABLE_NAME	MAX_RECURSIVE_ITERATIONS

mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result

@@ -2033,16 +2033,6 @@ NUMERIC_BLOCK_SIZE	1
 ENUM_VALUE_LIST	NULL
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
-VARIABLE_NAME	MAX_LONG_DATA_SIZE
-VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BIGINT UNSIGNED
-VARIABLE_COMMENT	The maximum BLOB length to send to server from mysql_send_long_data API. Deprecated option; use max_allowed_packet instead.
-NUMERIC_MIN_VALUE	1024
-NUMERIC_MAX_VALUE	4294967295
-NUMERIC_BLOCK_SIZE	1
-ENUM_VALUE_LIST	NULL
-READ_ONLY	YES
-COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	MAX_PASSWORD_ERRORS
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	INT UNSIGNED

mysql-test/suite/sys_vars/t/max_long_data_size_basic.test

-select @@global.max_long_data_size=20;
---error ER_INCORRECT_GLOBAL_LOCAL_VAR
-select @@session.max_long_data_size;
-
-# Show that value of the variable matches the value in the GLOBAL I_S table
-SELECT @@global.max_long_data_size = VARIABLE_VALUE
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
-WHERE VARIABLE_NAME='max_long_data_size';
-
-#
-# show that it's read-only
-#
---error ER_INCORRECT_GLOBAL_LOCAL_VAR
-set global max_long_data_size=1;
---error ER_INCORRECT_GLOBAL_LOCAL_VAR
-set session max_long_data_size=1;
-

sql/item.cc

@@ -4128,12 +4128,12 @@ bool Item_param::set_longdata(const char *str, ulong length)
     (here), and first have to concatenate all pieces together,
     write query to the binary log and only then perform conversion.
   */
-  if (value.m_string.length() + length > max_long_data_size)
+  if (value.m_string.length() + length > current_thd->variables.max_allowed_packet)
   {
     my_message(ER_UNKNOWN_ERROR,
                "Parameter of prepared statement which is set through "
                "mysql_send_long_data() is longer than "
-               "'max_long_data_size' bytes",
+               "'max_allowed_packet' bytes",
                MYF(0));
     DBUG_RETURN(true);
   }

sql/mysqld.cc

@@ -340,7 +340,6 @@ PSI_statement_info stmt_info_rpl;
 
 /* the default log output is log tables */
 static bool lower_case_table_names_used= 0;
-static bool max_long_data_size_used= false;
 static bool volatile select_thread_in_use, signal_thread_in_use;
 static my_bool opt_debugging= 0, opt_external_locking= 0, opt_console= 0;
 static my_bool opt_short_log_format= 0, opt_silent_startup= 0;
@@ -512,12 +511,6 @@ long opt_secure_timestamp;
 uint default_password_lifetime;
 my_bool disconnect_on_expired_password;
 
-/*
-  Maximum length of parameter value which can be set through
-  mysql_send_long_data() call.
-*/
-ulong max_long_data_size;
-
 bool max_user_connections_checking=0;
 /**
   Limit of the total number of prepared statements in the server.
@@ -8335,9 +8328,6 @@ mysqld_get_one_option(int optid, const struct my_option *opt, char *argument)
   case OPT_PLUGIN_LOAD_ADD:
     opt_plugin_load_list_ptr->push_back(new i_string(argument));
     break;
-  case OPT_MAX_LONG_DATA_SIZE:
-    max_long_data_size_used= true;
-    break;
   case OPT_PFS_INSTRUMENT:
   {
 #ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
@@ -8753,14 +8743,6 @@ static int get_options(int *argc_ptr, char ***argv_ptr)
 
   opt_readonly= read_only;
 
-  /*
-    If max_long_data_size is not specified explicitly use
-    value of max_allowed_packet.
-  */
-  if (!max_long_data_size_used)
-    SYSVAR_AUTOSIZE(max_long_data_size,
-                    global_system_variables.max_allowed_packet);
-
   /* Remember if max_user_connections was 0 at startup */
   max_user_connections_checking= global_system_variables.max_user_connections != 0;
 

sql/mysqld.h

@@ -157,7 +157,6 @@ extern plugin_ref *opt_gtid_pos_auto_plugins;
 extern bool opt_endinfo, using_udf_functions;
 extern my_bool locked_in_memory;
 extern bool opt_using_transactions;
-extern ulong max_long_data_size;
 extern ulong current_pid;
 extern ulong expire_logs_days;
 extern my_bool relay_log_recovery;
@@ -668,7 +667,6 @@ enum options_mysqld
   OPT_LOG_BASENAME,
   OPT_LOG_ERROR,
   OPT_LOWER_CASE_TABLE_NAMES,
-  OPT_MAX_LONG_DATA_SIZE,
   OPT_PLUGIN_LOAD,
   OPT_PLUGIN_LOAD_ADD,
   OPT_PFS_INSTRUMENT,

sql/sys_vars.cc

@@ -2320,18 +2320,6 @@ static Sys_var_ulong Sys_max_length_for_sort_data(
        SESSION_VAR(max_length_for_sort_data), CMD_LINE(REQUIRED_ARG),
        VALID_RANGE(4, 8192*1024L), DEFAULT(1024), BLOCK_SIZE(1));
 
-static Sys_var_ulong Sys_max_long_data_size(
-       "max_long_data_size",
-       "The maximum BLOB length to send to server from "
-       "mysql_send_long_data API. Deprecated option; "
-       "use max_allowed_packet instead.",
-       READ_ONLY GLOBAL_VAR(max_long_data_size),
-       CMD_LINE(REQUIRED_ARG, OPT_MAX_LONG_DATA_SIZE),
-       VALID_RANGE(1024, UINT_MAX32), DEFAULT(1024*1024),
-       BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG,
-       ON_CHECK(0), ON_UPDATE(0),
-       DEPRECATED("'@@max_allowed_packet'"));
-
 static PolyLock_mutex PLock_prepared_stmt_count(&LOCK_prepared_stmt_count);
 static Sys_var_uint Sys_max_prepared_stmt_count(
        "max_prepared_stmt_count",

sql/upgrade_conf_file.cc

@@ -115,6 +115,7 @@ static const char *removed_variables[] =
 "innodb_use_trim",
 "log",
 "log_slow_queries",
+"max_long_data_size",
 "rpl_recovery_rank",
 "sql_big_tables",
 "sql_low_priority_updates",