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MDEV-20051: Add new mode to wsrep_OSU_method in which Galera checks storage engine of the effected table

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Introduced a new wsrep_strict_ddl configuration variable in which
Galera checks storage engine of the effected table. If table is not
InnoDB (only storage engine currently fully supporting Galera
replication) DDL-statement will return error code:

ER_GALERA_REPLICATION_NOT_SUPPORTED
       eng "DDL-statement is forbidden as table storage engine does not support Galera replication"

However, when wsrep_replicate_myisam=ON we allow DDL-statements to
MyISAM tables. If effected table is allowed storage engine Galera
will run normal TOI.

This new setting should be for now set globally on all
nodes in a cluster. When this setting is set following DDL-clauses
accessing tables not supporting Galera replication are refused:

* CREATE TABLE (e.g. CREATE TABLE t1(a int) engine=Aria
* ALTER TABLE
* TRUNCATE TABLE
* CREATE VIEW
* CREATE TRIGGER
* CREATE INDEX
* DROP INDEX
* RENAME TABLE
* DROP TABLE

Statements on PROCEDURE, EVENT, FUNCTION are allowed as effected
tables are known only at execution. Furthermore, USER, ROLE, SERVER,
DATABASE statements are also allowed as they do not really have
effected table.
This commit is contained in:
Jan Lindström
2019-10-02 13:24:34 +03:00
parent 41541a7c48
commit e6a50e41da
21 changed files with 690 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/mysql/service_wsrep.h
View File

@@ -84,6 +84,7 @@ extern struct wsrep_service_st {
my_bool (*wsrep_get_debug_func)();
void (*wsrep_commit_ordered_func)(MYSQL_THD thd);
my_bool (*wsrep_thd_is_applying_func)(const MYSQL_THD thd);
ulong (*wsrep_OSU_method_get_func)(const MYSQL_THD thd);
my_bool (*wsrep_thd_has_ignored_error_func)(const MYSQL_THD thd);
void (*wsrep_thd_set_ignored_error_func)(MYSQL_THD thd, my_bool val);
} *wsrep_service;
@@ -126,9 +127,9 @@ extern struct wsrep_service_st {
#define wsrep_get_debug() wsrep_service->wsrep_get_debug_func()
#define wsrep_commit_ordered(T) wsrep_service->wsrep_commit_ordered_func(T)
#define wsrep_thd_is_applying(T) wsrep_service->wsrep_thd_is_applying_func(T)
#define wsrep_OSU_method_get(T) wsrep_service->wsrep_OSU_method_get_func(T)
#define wsrep_thd_has_ignored_error(T) wsrep_service->wsrep_thd_has_ignored_error_func(T)
#define wsrep_thd_set_ignored_error(T,V) wsrep_service->wsrep_thd_set_ignored_error_func(T,V)
#else
#define MYSQL_SERVICE_WSREP_STATIC_INCLUDED
@@ -220,9 +221,8 @@ extern "C" my_bool wsrep_get_debug();
extern "C" void wsrep_commit_ordered(MYSQL_THD thd);
extern "C" my_bool wsrep_thd_is_applying(const MYSQL_THD thd);
extern "C" ulong wsrep_OSU_method_get(const MYSQL_THD thd);
extern "C" my_bool wsrep_thd_has_ignored_error(const MYSQL_THD thd);
extern "C" void wsrep_thd_set_ignored_error(MYSQL_THD thd, my_bool val);
#endif
#endif /* MYSQL_SERVICE_WSREP_INCLUDED */