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e572c745dc
ha_innobase::referenced_by_foreign_key(): Protect the check with dict_sys.freeze(), to prevent races with TRUNCATE TABLE. The test innodb.instant_alter_crash has been adjusted for this additional locking. dict_table_is_referenced_by_foreign_key(): Removed (merged to the only caller). create_table_info_t::create_table(): Ignore missing indexes for FOREIGN KEY constraints if foreign_key_checks=0. create_table_info_t::create_table_update_dict(): Rewritten as a static function. Do not return any error. ha_innobase::create(): When trx!=nullptr and we are operating on a persistent table, do not rollback, commit, or release the data dictionary latch. ha_innobase::truncate(): Protect the entire critical section with an exclusive dict_sys.latch, so that ha_innobase::referenced_by_foreign_key() on referenced tables will return a consistent result. In case of a failure, invoke dict_load_foreigns() to restore also any FOREIGN KEY constraints. ha_innobase::free_foreign_key_create_info(): Define inline. lock_release(): Disregard innodb_evict_tables_on_commit_debug=ON when dict_sys.locked() holds. It would hold when fts_load_stopword() is invoked by create_table_info_t::create_table_update_dict(). dict_sys_t::locked(): Return whether the current thread is holding the exclusive dict_sys.latch. dict_sys_t::frozen_not_locked(): Return whether any thread is holding a shared dict_sys.latch. In the test main.mysql_upgrade, the InnoDB persistent statistics will no longer be recalculated in ha_innobase::open() as part of CHECK TABLE ... FOR UPGRADE. They were deleted earlier in the test. Tested by: Matthias Leich |
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| lock0iter.cc | ||
| lock0lock.cc | ||
| lock0prdt.cc | ||