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MDEV-25743: Unnecessary copying of table names in InnoDB dictionary

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Many InnoDB data dictionary cache operations require that the
table name be copied so that it will be NUL terminated.
(For example, SYS_TABLES.NAME is not guaranteed to be NUL-terminated.)

dict_table_t::is_garbage_name(): Check if a name belongs to
the background drop table queue.

dict_check_if_system_table_exists(): Remove.

dict_sys_t::load_sys_tables(): Load the non-hard-coded system tables
SYS_FOREIGN, SYS_FOREIGN_COLS, SYS_VIRTUAL on startup.

dict_sys_t::create_or_check_sys_tables(): Replaces
dict_create_or_check_foreign_constraint_tables() and
dict_create_or_check_sys_virtual().

dict_sys_t::load_table(): Replaces dict_table_get_low()
and dict_load_table().

dict_sys_t::find_table(): Renamed from get_table().

dict_sys_t::sys_tables_exist(): Check whether all the non-hard-coded
tables SYS_FOREIGN, SYS_FOREIGN_COLS, SYS_VIRTUAL exist.

trx_t::has_stats_table_lock(): Moved to dict0stats.cc.

Some error messages will now report table names in the internal
databasename/tablename format, instead of `databasename`.`tablename`.
This commit is contained in:
Marko Mäkelä
2021-05-20 14:58:25 +03:00
parent 525bf04910
commit 49e2c8f0a6
51 changed files with 915 additions and 1321 deletions
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2
mysql-test/suite/innodb/r/truncate_missing.result
View File

@@ -1,6 +1,6 @@
call mtr.add_suppression("InnoDB: Operating system error number ");
call mtr.add_suppression("InnoDB: (The error means|If you are|Cannot open datafile) ");
call mtr.add_suppression("InnoDB: Ignoring tablespace for `test`\.`t`");
call mtr.add_suppression("InnoDB: Ignoring tablespace for test/t ");
call mtr.add_suppression("InnoDB: Table test/t .* does not exist");
CREATE TABLE t (a SERIAL) ENGINE=InnoDB;
INSERT INTO t() VALUES();