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MDEV-8579 Expand system variable documentation

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=Ian Gilfillan 2017-08-10 16:02:54 +02:00 committed by Sergey Vojtovich
parent a4c882f0e5
commit f066c89a97
1 changed files with 147 additions and 56 deletions
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201
sql/sys_vars.cc
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@ -370,7 +370,7 @@ static Sys_var_mybool Sys_automatic_sp_privileges(
static Sys_var_ulong Sys_back_log(
"back_log", "The number of outstanding connection requests "
"MariaDB can have. This comes into play when the main MySQL thread "
"MariaDB can have. This comes into play when the main MariaDB thread "
"gets very many connection requests in a very short time",
AUTO_SET READ_ONLY GLOBAL_VAR(back_log), CMD_LINE(REQUIRED_ARG),
VALID_RANGE(0, 65535), DEFAULT(150), BLOCK_SIZE(1));
@ -394,7 +394,7 @@ static Sys_var_ulonglong Sys_binlog_stmt_cache_size(
"binlog_stmt_cache_size", "The size of the statement cache for "
"updates to non-transactional engines for the binary log. "
"If you often use statements updating a great number of rows, "
"you can increase this to get more performance",
"you can increase this to get more performance.",
GLOBAL_VAR(binlog_stmt_cache_size),
CMD_LINE(REQUIRED_ARG),
VALID_RANGE(IO_SIZE, SIZE_T_MAX), DEFAULT(32768), BLOCK_SIZE(IO_SIZE));
@ -809,7 +809,15 @@ export bool fix_delay_key_write(sys_var *self, THD *thd, enum_var_type type)
}
static const char *delay_key_write_names[]= { "OFF", "ON", "ALL", NullS };
static Sys_var_enum Sys_delay_key_write(
"delay_key_write", "Type of DELAY_KEY_WRITE",
"delay_key_write", "Specifies how MyISAM tables handles CREATE "
"TABLE DELAY_KEY_WRITE. If set to ON, the default, any DELAY KEY "
"WRITEs are honored. The key buffer is then flushed only when the "
"table closes, speeding up writes. MyISAM tables should be "
"automatically checked upon startup in this case, and "
"--external locking should not be used, as it can lead to index "
"corruption. If set to OFF, DELAY KEY WRITEs are ignored, while if "
"set to ALL, all new opened tables are treated as if created with "
"DELAY KEY WRITEs enabled.",
GLOBAL_VAR(delay_key_write_options), CMD_LINE(OPT_ARG),
delay_key_write_names, DEFAULT(DELAY_KEY_WRITE_ON),
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0),
@ -819,7 +827,7 @@ static Sys_var_ulong Sys_delayed_insert_limit(
"delayed_insert_limit",
"After inserting delayed_insert_limit rows, the INSERT DELAYED "
"handler will check if there are any SELECT statements pending. "
"If so, it allows these to execute before continuing",
"If so, it allows these to execute before continuing.",
GLOBAL_VAR(delayed_insert_limit), CMD_LINE(REQUIRED_ARG),
VALID_RANGE(1, UINT_MAX), DEFAULT(DELAYED_LIMIT), BLOCK_SIZE(1));
@ -2331,7 +2339,7 @@ static Sys_var_ulong Sys_optimizer_search_depth(
"optimization, but may produce very bad query plans. If set to 0, "
"the system will automatically pick a reasonable value; if set to "
"63, the optimizer will switch to the original find_best search. "
"NOTE: The value 63 and its associated behaviour is deprecated",
"NOTE: The value 63 and its associated behaviour is deprecated.",
SESSION_VAR(optimizer_search_depth), CMD_LINE(REQUIRED_ARG),
VALID_RANGE(0, MAX_TABLES+2), DEFAULT(MAX_TABLES+1), BLOCK_SIZE(1),
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0),
@ -2413,7 +2421,7 @@ static Sys_var_ulong Sys_preload_buff_size(
static Sys_var_uint Sys_protocol_version(
"protocol_version",
"The version of the client/server protocol used by the MySQL server",
"The version of the client/server protocol used by the MariaDB server",
READ_ONLY GLOBAL_VAR(protocol_version), CMD_LINE_HELP_ONLY,
VALID_RANGE(0, ~0), DEFAULT(PROTOCOL_VERSION), BLOCK_SIZE(1));
@ -2864,7 +2872,7 @@ static Sys_var_enum Slave_exec_mode(
"For example, in row based replication attempts to delete rows that "
"doesn't exist will be ignored. "
"In STRICT mode, replication will stop on any unexpected difference "
"between the master and the slave",
"between the master and the slave.",
GLOBAL_VAR(slave_exec_mode_options), CMD_LINE(REQUIRED_ARG),
slave_exec_mode_names, DEFAULT(SLAVE_EXEC_MODE_STRICT));
@ -3350,14 +3358,17 @@ bool Sys_var_tx_read_only::session_update(THD *thd, set_var *var)
static Sys_var_tx_read_only Sys_tx_read_only(
"tx_read_only", "Set default transaction access mode to read only.",
"tx_read_only", "Default transaction access mode. If set to OFF, "
"the default, access is read/write. If set to ON, access is read-only. "
"The SET TRANSACTION statement can also change the value of this variable. "
"See SET TRANSACTION and START TRANSACTION.",
SESSION_VAR(tx_read_only), NO_CMD_LINE, DEFAULT(0),
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_tx_read_only));
static Sys_var_ulonglong Sys_tmp_table_size(
"tmp_table_size",
"If an internal in-memory temporary table exceeds this size, MySQL "
"will automatically convert it to an on-disk MyISAM or Aria table",
"If an internal in-memory temporary table exceeds this size, MariaDB "
"will automatically convert it to an on-disk MyISAM or Aria table.",
SESSION_VAR(tmp_table_size), CMD_LINE(REQUIRED_ARG),
VALID_RANGE(1024, (ulonglong)~(intptr)0), DEFAULT(16*1024*1024),
BLOCK_SIZE(1));
@ -3371,27 +3382,35 @@ static Sys_var_mybool Sys_timed_mutexes(
static char *server_version_ptr;
static Sys_var_charptr Sys_version(
"version", "Server version",
"version", "Server version number. It may also include a suffix "
"with configuration or build information. -debug indicates "
"debugging support was enabled on the server, and -log indicates "
"at least one of the binary log, general log or slow query log are "
"enabled, for example 10.1.1-MariaDB-mariadb1precise-log.",
READ_ONLY GLOBAL_VAR(server_version_ptr),
CMD_LINE_HELP_ONLY,
IN_SYSTEM_CHARSET, DEFAULT(server_version));
static char *server_version_comment_ptr;
static Sys_var_charptr Sys_version_comment(
"version_comment", "version_comment",
"version_comment", "Value of the COMPILATION_COMMENT option "
"specified by CMake when building MariaDB, for example "
"mariadb.org binary distribution.",
READ_ONLY GLOBAL_VAR(server_version_comment_ptr),
CMD_LINE_HELP_ONLY,
IN_SYSTEM_CHARSET, DEFAULT(MYSQL_COMPILATION_COMMENT));
static char *server_version_compile_machine_ptr;
static Sys_var_charptr Sys_version_compile_machine(
"version_compile_machine", "version_compile_machine",
"version_compile_machine", "The machine type or architecture "
"MariaDB was built on, for example i686.",
READ_ONLY GLOBAL_VAR(server_version_compile_machine_ptr),
CMD_LINE_HELP_ONLY, IN_SYSTEM_CHARSET, DEFAULT(DEFAULT_MACHINE));
static char *server_version_compile_os_ptr;
static Sys_var_charptr Sys_version_compile_os(
"version_compile_os", "version_compile_os",
"version_compile_os", "Operating system that MariaDB was built "
"on, for example debian-linux-gnu.",
READ_ONLY GLOBAL_VAR(server_version_compile_os_ptr),
CMD_LINE_HELP_ONLY,
IN_SYSTEM_CHARSET, DEFAULT(SYSTEM_TYPE));
@ -3555,24 +3574,34 @@ static bool fix_autocommit(sys_var *self, THD *thd, enum_var_type type)
}
static Sys_var_bit Sys_autocommit(
"autocommit", "autocommit",
"autocommit", "If set to 1, the default, all queries are committed "
"immediately. If set to 0, they are only committed upon a COMMIT statement"
", or rolled back with a ROLLBACK statement. If autocommit is set to 0, "
"and then changed to 1, all open transactions are immediately committed.",
NO_SET_STMT SESSION_VAR(option_bits), NO_CMD_LINE,
OPTION_AUTOCOMMIT, DEFAULT(TRUE),
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_autocommit));
export sys_var *Sys_autocommit_ptr= &Sys_autocommit; // for sql_yacc.yy
static Sys_var_mybool Sys_big_tables(
"big_tables", "Allow big result sets by saving all "
"temporary sets on file (Solves most 'table full' errors)",
"big_tables", "Old variable, which if set to 1, allows large result sets "
"by saving all temporary sets to disk, avoiding 'table full' errors. No "
"longer needed, as the server now handles this automatically. "
"sql_big_tables is a synonym.",
SESSION_VAR(big_tables), CMD_LINE(OPT_ARG), DEFAULT(FALSE));
static Sys_var_bit Sys_big_selects(
"sql_big_selects", "sql_big_selects",
"sql_big_selects", "If set to 0, MariaDB will not perform large SELECTs."
" See max_join_size for details. If max_join_size is set to anything but "
"DEFAULT, sql_big_selects is automatically set to 0. If sql_big_selects "
"is again set, max_join_size will be ignored.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_BIG_SELECTS,
DEFAULT(FALSE));
static Sys_var_bit Sys_log_off(
"sql_log_off", "sql_log_off",
"sql_log_off", "If set to 1 (0 is the default), no logging to the general "
"query log is done for the client. Only clients with the SUPER privilege "
"can update this variable.",
NO_SET_STMT SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_LOG_OFF,
DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_has_super));
@ -3630,49 +3659,79 @@ static bool check_sql_log_bin(sys_var *self, THD *thd, set_var *var)
}
static Sys_var_mybool Sys_log_binlog(
"sql_log_bin", "Controls whether logging to the binary log is done",
"sql_log_bin", "If set to 0 (1 is the default), no logging to the binary "
"log is done for the client. Only clients with the SUPER privilege can "
"update this variable. Can have unintended consequences if set globally, "
"see SET SQL_LOG_BIN. Starting MariaDB 10.1.7, this variable does not "
"affect the replication of events in a Galera cluster.",
SESSION_VAR(sql_log_bin), NO_CMD_LINE, DEFAULT(TRUE),
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_sql_log_bin),
ON_UPDATE(fix_sql_log_bin_after_update));
static Sys_var_bit Sys_sql_warnings(
"sql_warnings", "sql_warnings",
"sql_warnings", "If set to 1, single-row INSERTs will produce a string "
"containing warning information if a warning occurs.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_WARNINGS,
DEFAULT(FALSE));
static Sys_var_bit Sys_sql_notes(
"sql_notes", "sql_notes",
"sql_notes", "If set to 1, the default, warning_count is incremented each "
"time a Note warning is encountered. If set to 0, Note warnings are not "
"recorded. mysqldump has outputs to set this variable to 0 so that no "
"unnecessary increments occur when data is reloaded.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_SQL_NOTES,
DEFAULT(TRUE));
static Sys_var_bit Sys_auto_is_null(
"sql_auto_is_null", "sql_auto_is_null",
"sql_auto_is_null", "If set to 1, the query SELECT * FROM table_name WHERE "
"auto_increment_column IS NULL will return an auto-increment that has just "
"been successfully inserted, the same as the LAST_INSERT_ID() function. Some"
" ODBC programs make use of this IS NULL comparison.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_AUTO_IS_NULL,
DEFAULT(FALSE), NO_MUTEX_GUARD, IN_BINLOG);
static Sys_var_bit Sys_safe_updates(
"sql_safe_updates", "sql_safe_updates",
"sql_safe_updates", "If set to 1, UPDATEs and DELETEs need either a key in "
"the WHERE clause, or a LIMIT clause, or else they will aborted. Prevents "
"the common mistake of accidentally deleting or updating every row in a table.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_SAFE_UPDATES,
DEFAULT(FALSE));
static Sys_var_bit Sys_buffer_results(
"sql_buffer_result", "sql_buffer_result",
"sql_buffer_result", "If set to 1 (0 is default), results from SELECT "
"statements are always placed into temporary tables. This can help the "
"server when it takes a long time to send the results to the client by "
"allowing the table locks to be freed early.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_BUFFER_RESULT,
DEFAULT(FALSE));
static Sys_var_bit Sys_quote_show_create(
"sql_quote_show_create", "sql_quote_show_create",
"sql_quote_show_create", "If set to 1, the default, the server will "
"quote identifiers for SHOW CREATE DATABASE, SHOW CREATE TABLE and "
"SHOW CREATE VIEW statements. Quoting is disabled if set to 0. Enable "
"to ensure replications works when identifiers require quoting.",
SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_QUOTE_SHOW_CREATE,
DEFAULT(TRUE));
static Sys_var_bit Sys_foreign_key_checks(
"foreign_key_checks", "foreign_key_checks",
"foreign_key_checks", "If set to 1 (the default) foreign key constraints"
" (including ON UPDATE and ON DELETE behavior) InnoDB tables are checked,"
" while if set to 0, they are not checked. 0 is not recommended for normal "
"use, though it can be useful in situations where you know the data is "
"consistent, but want to reload data in a different order from that that "
"specified by parent/child relationships. Setting this variable to 1 does "
"not retrospectively check for inconsistencies introduced while set to 0.",
SESSION_VAR(option_bits), NO_CMD_LINE,
REVERSE(OPTION_NO_FOREIGN_KEY_CHECKS),
DEFAULT(TRUE), NO_MUTEX_GUARD, IN_BINLOG);
static Sys_var_bit Sys_unique_checks(
"unique_checks", "unique_checks",
"unique_checks", "If set to 1, the default, secondary indexes in InnoDB "
"tables are performed. If set to 0, storage engines can (but are not "
"required to) assume that duplicate keys are not present in input data. "
"Set to 0 to speed up imports of large tables to InnoDB. The storage "
"engine will still issue a duplicate key error if it detects one, even "
"if set to 0.",
SESSION_VAR(option_bits), NO_CMD_LINE,
REVERSE(OPTION_RELAXED_UNIQUE_CHECKS),
DEFAULT(TRUE), NO_MUTEX_GUARD, IN_BINLOG);
@ -3686,13 +3745,16 @@ static bool update_profiling(sys_var *self, THD *thd, enum_var_type type)
}
static Sys_var_bit Sys_profiling(
"profiling", "profiling",
"profiling", "If set to 1 (0 is default), statement profiling will be "
"enabled. See SHOW PROFILES and SHOW PROFILE.",
NO_SET_STMT SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_PROFILING,
DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0),
ON_UPDATE(update_profiling));
static Sys_var_ulong Sys_profiling_history_size(
"profiling_history_size", "Limit of query profiling memory",
"profiling_history_size", "Number of statements about which profiling "
"information is maintained. If set to 0, no profiles are stored. "
"See SHOW PROFILES.",
NO_SET_STMT SESSION_VAR(profiling_history_size), CMD_LINE(REQUIRED_ARG),
VALID_RANGE(0, 100), DEFAULT(15), BLOCK_SIZE(1));
#endif
@ -3726,7 +3788,11 @@ static bool check_skip_replication(sys_var *self, THD *thd, set_var *var)
}
static Sys_var_bit Sys_skip_replication(
"skip_replication", "skip_replication",
"skip_replication", "Changes are logged into the binary log with the "
"@@skip_replication flag set. Such events will not be replicated by "
"slaves that run with --replicate-events-marked-for-skip set different "
"from its default of REPLICATE. See Selectively skipping replication "
"of binlog events for more information.",
NO_SET_STMT SESSION_ONLY(option_bits),
NO_CMD_LINE, OPTION_SKIP_REPLICATION,
DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG,
@ -4069,43 +4135,61 @@ static Sys_var_charptr Sys_slow_log_path(
ON_CHECK(check_log_path), ON_UPDATE(fix_slow_log_file));
static Sys_var_have Sys_have_compress(
"have_compress", "have_compress",
"have_compress", "If the zlib compression library is accessible to the "
"server, this will be set to YES, otherwise it will be NO. The COMPRESS() "
"and UNCOMPRESS() functions will only be available if set to YES.",
READ_ONLY GLOBAL_VAR(have_compress), NO_CMD_LINE);
static Sys_var_have Sys_have_crypt(
"have_crypt", "have_crypt",
"have_crypt", "If the crypt() system call is available this variable will "
"be set to YES, otherwise it will be set to NO. If set to NO, the "
"ENCRYPT() function cannot be used.",
READ_ONLY GLOBAL_VAR(have_crypt), NO_CMD_LINE);
static Sys_var_have Sys_have_dlopen(
"have_dynamic_loading", "have_dynamic_loading",
"have_dynamic_loading", "If the server supports dynamic loading of plugins, "
"will be set to YES, otherwise will be set to NO.",
READ_ONLY GLOBAL_VAR(have_dlopen), NO_CMD_LINE);
static Sys_var_have Sys_have_geometry(
"have_geometry", "have_geometry",
"have_geometry", "If the server supports spatial data types, will be set to "
"YES, otherwise will be set to NO.",
READ_ONLY GLOBAL_VAR(have_geometry), NO_CMD_LINE);
static Sys_var_have Sys_have_openssl(
"have_openssl", "have_openssl",
"have_openssl", "Comparing have_openssl with have_ssl will indicate whether "
"YaSSL or openssl was used. If YaSSL, have_ssl will be YES, but have_openssl "
"will be NO.",
READ_ONLY GLOBAL_VAR(have_openssl), NO_CMD_LINE);
static Sys_var_have Sys_have_profiling(
"have_profiling", "have_profiling",
"have_profiling", "If statement profiling is available, will be set to YES, "
"otherwise will be set to NO. See SHOW PROFILES and SHOW PROFILE.",
READ_ONLY GLOBAL_VAR(have_profiling), NO_CMD_LINE);
static Sys_var_have Sys_have_query_cache(
"have_query_cache", "have_query_cache",
"have_query_cache", "If the server supports the query cache, will be set to "
"YES, otherwise will be set to NO.",
READ_ONLY GLOBAL_VAR(have_query_cache), NO_CMD_LINE);
static Sys_var_have Sys_have_rtree_keys(
"have_rtree_keys", "have_rtree_keys",
"have_rtree_keys", "If RTREE indexes (used for spatial indexes) "
"are available, will be set to YES, otherwise will be set to NO.",
READ_ONLY GLOBAL_VAR(have_rtree_keys), NO_CMD_LINE);
static Sys_var_have Sys_have_ssl(
"have_ssl", "have_ssl",
"have_ssl", "If the server supports secure connections, will be set to YES, "
"otherwise will be set to NO. If set to DISABLED, the server was compiled with "
"TLS support, but was not started with TLS support (see the mysqld options). "
"See also have_openssl.",
READ_ONLY GLOBAL_VAR(have_ssl), NO_CMD_LINE);
static Sys_var_have Sys_have_symlink(
"have_symlink", "have_symlink",
"have_symlink", "If symbolic link support is enabled, will be set to YES, "
"otherwise will be set to NO. Required for the INDEX DIRECTORY and DATA "
"DIRECTORY table options (see CREATE TABLE) and Windows symlink support. "
"Will be set to DISABLED if the server is started with the "
"--skip-symbolic-links option.",
READ_ONLY GLOBAL_VAR(have_symlink), NO_CMD_LINE);
static bool fix_log_state(sys_var *self, THD *thd, enum_var_type type);
@ -4113,7 +4197,7 @@ static bool fix_log_state(sys_var *self, THD *thd, enum_var_type type);
static Sys_var_mybool Sys_general_log(
"general_log", "Log connections and queries to a table or log file. "
"Defaults logging to a file 'hostname'.log or a table mysql.general_log"
"if --log-output=TABLE is used",
"if --log-output=TABLE is used.",
GLOBAL_VAR(opt_log), CMD_LINE(OPT_ARG),
DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0),
ON_UPDATE(fix_log_state));
@ -4122,7 +4206,7 @@ static Sys_var_mybool Sys_slow_query_log(
"slow_query_log",
"Log slow queries to a table or log file. Defaults logging to a file "
"'hostname'-slow.log or a table mysql.slow_log if --log-output=TABLE is "
"used. Must be enabled to activate other slow log options",
"used. Must be enabled to activate other slow log options.",
SESSION_VAR(sql_log_slow), CMD_LINE(OPT_ARG),
DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG,
ON_CHECK(0), ON_UPDATE(fix_log_state));
@ -4194,12 +4278,12 @@ static Sys_var_set Sys_log_output(
static Sys_var_mybool Sys_log_slave_updates(
"log_slave_updates", "Tells the slave to log the updates from "
"the slave thread to the binary log. You will need to turn it on if "
"you plan to daisy-chain the slaves",
"you plan to daisy-chain the slaves.",
READ_ONLY GLOBAL_VAR(opt_log_slave_updates), CMD_LINE(OPT_ARG),
DEFAULT(0));
static Sys_var_charptr Sys_relay_log(
"relay_log", "The location and name to use for relay logs",
"relay_log", "The location and name to use for relay logs.",
READ_ONLY GLOBAL_VAR(opt_relay_logname), CMD_LINE(REQUIRED_ARG),
IN_FS_CHARSET, DEFAULT(0));
@ -4210,7 +4294,7 @@ static Sys_var_charptr Sys_relay_log(
*/
static Sys_var_charptr Sys_relay_log_index(
"relay_log_index", "The location and name to use for the file "
"that keeps a list of the last relay logs",
"that keeps a list of the last relay logs.",
READ_ONLY GLOBAL_VAR(relay_log_index), NO_CMD_LINE,
IN_FS_CHARSET, DEFAULT(0));
@ -4238,20 +4322,20 @@ static Sys_var_charptr Sys_log_bin_basename(
static Sys_var_charptr Sys_relay_log_info_file(
"relay_log_info_file", "The location and name of the file that "
"remembers where the SQL replication thread is in the relay logs",
"remembers where the SQL replication thread is in the relay logs.",
READ_ONLY GLOBAL_VAR(relay_log_info_file), CMD_LINE(REQUIRED_ARG),
IN_FS_CHARSET, DEFAULT(0));
static Sys_var_mybool Sys_relay_log_purge(
"relay_log_purge", "if disabled - do not purge relay logs. "
"if enabled - purge them as soon as they are no more needed",
"if enabled - purge them as soon as they are no more needed.",
GLOBAL_VAR(relay_log_purge), CMD_LINE(OPT_ARG), DEFAULT(TRUE));
static Sys_var_mybool Sys_relay_log_recovery(
"relay_log_recovery", "Enables automatic relay log recovery "
"right after the database startup, which means that the IO Thread "
"starts re-fetching from the master right after the last transaction "
"processed",
"processed.",
GLOBAL_VAR(relay_log_recovery), CMD_LINE(OPT_ARG), DEFAULT(FALSE));
@ -4655,7 +4739,9 @@ static Sys_var_struct Sys_lc_time_names(
NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_locale));
static Sys_var_tz Sys_time_zone(
"time_zone", "time_zone",
"time_zone", "The current time zone, used to initialize the time "
"zone for a client when it connects. Set to SYSTEM by default, in "
"which the client uses the system time zone value.",
SESSION_VAR(time_zone), NO_CMD_LINE,
DEFAULT(&default_tz), NO_MUTEX_GUARD, IN_BINLOG);
@ -4672,7 +4758,8 @@ static Sys_var_charptr Sys_wsrep_provider(
ON_CHECK(wsrep_provider_check), ON_UPDATE(wsrep_provider_update));
static Sys_var_charptr Sys_wsrep_provider_options(
"wsrep_provider_options", "provider specific options",
"wsrep_provider_options", "Semicolon (;) separated list of wsrep "
"options (see wsrep_provider_options documentation).",
PREALLOCATED GLOBAL_VAR(wsrep_provider_options),
CMD_LINE(REQUIRED_ARG),
IN_SYSTEM_CHARSET, DEFAULT(""), NO_MUTEX_GUARD, NOT_IN_BINLOG,
@ -4703,13 +4790,17 @@ static Sys_var_charptr Sys_wsrep_cluster_address (
ON_UPDATE(wsrep_cluster_address_update));
static Sys_var_charptr Sys_wsrep_node_name (
"wsrep_node_name", "Node name",
"wsrep_node_name", "Name of this node. This name can be used in "
"wsrep_sst_donor as a preferred donor. Note that multiple nodes "
"in a cluster can have the same name.",
PREALLOCATED GLOBAL_VAR(wsrep_node_name), CMD_LINE(REQUIRED_ARG),
IN_SYSTEM_CHARSET, DEFAULT(glob_hostname), NO_MUTEX_GUARD, NOT_IN_BINLOG,
wsrep_node_name_check, wsrep_node_name_update);
static Sys_var_charptr Sys_wsrep_node_address (
"wsrep_node_address", "Node address",
"wsrep_node_address", "Specifies the node's network address, in "
"the format ip address[:port]. Used in situations where autoguessing "
"is not reliable. As of MariaDB 10.1.8, supports IPv6.",
PREALLOCATED GLOBAL_VAR(wsrep_node_address), CMD_LINE(REQUIRED_ARG),
IN_SYSTEM_CHARSET, DEFAULT(""),
NO_MUTEX_GUARD, NOT_IN_BINLOG,
@ -4927,7 +5018,7 @@ static Sys_var_mybool Sys_wsrep_slave_UK_checks(
CMD_LINE(OPT_ARG), DEFAULT(FALSE));
static Sys_var_mybool Sys_wsrep_restart_slave(
"wsrep_restart_slave", "Should MySQL slave be restarted automatically, when node joins back to cluster",
"wsrep_restart_slave", "Should MariaDB slave be restarted automatically, when node joins back to cluster",
GLOBAL_VAR(wsrep_restart_slave), CMD_LINE(OPT_ARG), DEFAULT(FALSE));
static Sys_var_mybool Sys_wsrep_dirty_reads(
@ -4954,7 +5045,7 @@ static Sys_var_mybool Sys_wsrep_gtid_mode(
static char *wsrep_patch_version_ptr;
static Sys_var_charptr Sys_wsrep_patch_version(
"wsrep_patch_version", "wsrep patch version",
"wsrep_patch_version", "Wsrep patch version, for example wsrep_25.10.",
READ_ONLY GLOBAL_VAR(wsrep_patch_version_ptr), CMD_LINE_HELP_ONLY,
IN_SYSTEM_CHARSET, DEFAULT(WSREP_PATCH_VERSION));