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1bd681c8b3
This is a complete rewrite of DROP TABLE, also as part of other DDL, such as ALTER TABLE, CREATE TABLE...SELECT, TRUNCATE TABLE. The background DROP TABLE queue hack is removed. If a transaction needs to drop and create a table by the same name (like TRUNCATE TABLE does), it must first rename the table to an internal #sql-ib name. No committed version of the data dictionary will include any #sql-ib tables, because whenever a transaction renames a table to a #sql-ib name, it will also drop that table. Either the rename will be rolled back, or the drop will be committed. Data files will be unlinked after the transaction has been committed and a FILE_RENAME record has been durably written. The file will actually be deleted when the detached file handle returned by fil_delete_tablespace() will be closed, after the latches have been released. It is possible that a purge of the delete of the SYS_INDEXES record for the clustered index will execute fil_delete_tablespace() concurrently with the DDL transaction. In that case, the thread that arrives later will wait for the other thread to finish. HTON_TRUNCATE_REQUIRES_EXCLUSIVE_USE: A new handler flag. ha_innobase::truncate() now requires that all other references to the table be released in advance. This was implemented by Monty. ha_innobase::delete_table(): If CREATE TABLE..SELECT is detected, we will "hijack" the current transaction, drop the table in the current transaction and commit the current transaction. This essentially fixes MDEV-21602. There is a FIXME comment about making the check less failure-prone. ha_innobase::truncate(), ha_innobase::delete_table(): Implement a fast path for temporary tables. We will no longer allow temporary tables to use the adaptive hash index. dict_table_t::mdl_name: The original table name for the purpose of acquiring MDL in purge, to prevent a race condition between a DDL transaction that is dropping a table, and purge processing undo log records of DML that had executed before the DDL operation. For #sql-backup- tables during ALTER TABLE...ALGORITHM=COPY, the dict_table_t::mdl_name will differ from dict_table_t::name. dict_table_t::parse_name(): Use mdl_name instead of name. dict_table_rename_in_cache(): Update mdl_name. For the internal FTS_ tables of FULLTEXT INDEX, purge would acquire MDL on the FTS_ table name, but not on the main table, and therefore it would be able to run concurrently with a DDL transaction that is dropping the table. Previously, the DROP TABLE queue hack prevented a race between purge and DDL. For now, we introduce purge_sys.stop_FTS() to prevent purge from opening any table, while a DDL transaction that may drop FTS_ tables is in progress. The function fts_lock_table(), which will be invoked before the dictionary is locked, will wait for purge to release any table handles. trx_t::drop_table_statistics(): Drop statistics for the table. This replaces dict_stats_drop_index(). We will drop or rename persistent statistics atomically as part of DDL transactions. On lock conflict for dropping statistics, we will fail instantly with DB_LOCK_WAIT_TIMEOUT, because we will be holding the exclusive data dictionary latch. trx_t::commit_cleanup(): Separated from trx_t::commit_in_memory(). Relax an assertion around fts_commit() and allow DB_LOCK_WAIT_TIMEOUT in addition to DB_DUPLICATE_KEY. The call to fts_commit() is entirely misplaced here and may obviously break the consistency of transactions that affect FULLTEXT INDEX. It needs to be fixed separately. dict_table_t::n_foreign_key_checks_running: Remove (MDEV-21175). The counter was a work-around for missing meta-data locking (MDL) on the SQL layer, and not really needed in MariaDB. ER_TABLE_IN_FK_CHECK: Replaced with ER_UNUSED_28. HA_ERR_TABLE_IN_FK_CHECK: Remove. row_ins_check_foreign_constraints(): Do not acquire dict_sys.latch either. The SQL-layer MDL will protect us. This was reviewed by Thirunarayanan Balathandayuthapani and tested by Matthias Leich.
81 lines
4.3 KiB
C
81 lines
4.3 KiB
C
/* Copyright (c) 2013, 2021, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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/* Names of all handler error numbers. Used by mysqltest */
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{ "HA_ERR_KEY_NOT_FOUND", HA_ERR_KEY_NOT_FOUND, "" },
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{ "HA_ERR_FOUND_DUPP_KEY", HA_ERR_FOUND_DUPP_KEY, "" },
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{ "HA_ERR_INTERNAL_ERROR", HA_ERR_INTERNAL_ERROR, "" },
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{ "HA_ERR_RECORD_CHANGED", HA_ERR_RECORD_CHANGED, "" },
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{ "HA_ERR_WRONG_INDEX", HA_ERR_WRONG_INDEX, "" },
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{ "HA_ERR_CRASHED", HA_ERR_CRASHED, "" },
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{ "HA_ERR_WRONG_IN_RECORD", HA_ERR_WRONG_IN_RECORD, "" },
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{ "HA_ERR_OUT_OF_MEM", HA_ERR_OUT_OF_MEM, "" },
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{ "HA_ERR_NOT_A_TABLE", HA_ERR_NOT_A_TABLE, "" },
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{ "HA_ERR_WRONG_COMMAND", HA_ERR_WRONG_COMMAND, "" },
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{ "HA_ERR_OLD_FILE", HA_ERR_OLD_FILE, "" },
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{ "HA_ERR_NO_ACTIVE_RECORD", HA_ERR_NO_ACTIVE_RECORD, "" },
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{ "HA_ERR_RECORD_DELETED", HA_ERR_RECORD_DELETED, "" },
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{ "HA_ERR_RECORD_FILE_FULL", HA_ERR_RECORD_FILE_FULL, "" },
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{ "HA_ERR_INDEX_FILE_FULL", HA_ERR_INDEX_FILE_FULL, "" },
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{ "HA_ERR_END_OF_FILE", HA_ERR_END_OF_FILE, "" },
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{ "HA_ERR_UNSUPPORTED", HA_ERR_UNSUPPORTED, "" },
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{ "HA_ERR_TO_BIG_ROW", HA_ERR_TO_BIG_ROW, "" },
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{ "HA_WRONG_CREATE_OPTION", HA_WRONG_CREATE_OPTION, "" },
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{ "HA_ERR_FOUND_DUPP_UNIQUE", HA_ERR_FOUND_DUPP_UNIQUE, "" },
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{ "HA_ERR_UNKNOWN_CHARSET", HA_ERR_UNKNOWN_CHARSET, "" },
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{ "HA_ERR_WRONG_MRG_TABLE_DEF", HA_ERR_WRONG_MRG_TABLE_DEF, "" },
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{ "HA_ERR_CRASHED_ON_REPAIR", HA_ERR_CRASHED_ON_REPAIR, "" },
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{ "HA_ERR_CRASHED_ON_USAGE", HA_ERR_CRASHED_ON_USAGE, "" },
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{ "HA_ERR_LOCK_WAIT_TIMEOUT", HA_ERR_LOCK_WAIT_TIMEOUT, "" },
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{ "HA_ERR_LOCK_TABLE_FULL", HA_ERR_LOCK_TABLE_FULL, "" },
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{ "HA_ERR_READ_ONLY_TRANSACTION", HA_ERR_READ_ONLY_TRANSACTION, "" },
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{ "HA_ERR_LOCK_DEADLOCK", HA_ERR_LOCK_DEADLOCK, "" },
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{ "HA_ERR_CANNOT_ADD_FOREIGN", HA_ERR_CANNOT_ADD_FOREIGN, "" },
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{ "HA_ERR_NO_REFERENCED_ROW", HA_ERR_NO_REFERENCED_ROW, "" },
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{ "HA_ERR_ROW_IS_REFERENCED", HA_ERR_ROW_IS_REFERENCED, "" },
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{ "HA_ERR_NO_SAVEPOINT", HA_ERR_NO_SAVEPOINT, "" },
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{ "HA_ERR_NON_UNIQUE_BLOCK_SIZE", HA_ERR_NON_UNIQUE_BLOCK_SIZE, "" },
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{ "HA_ERR_NO_SUCH_TABLE", HA_ERR_NO_SUCH_TABLE, "" },
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{ "HA_ERR_TABLE_EXIST", HA_ERR_TABLE_EXIST, "" },
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{ "HA_ERR_NO_CONNECTION", HA_ERR_NO_CONNECTION, "" },
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{ "HA_ERR_NULL_IN_SPATIAL", HA_ERR_NULL_IN_SPATIAL, "" },
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{ "HA_ERR_TABLE_DEF_CHANGED", HA_ERR_TABLE_DEF_CHANGED, "" },
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{ "HA_ERR_NO_PARTITION_FOUND", HA_ERR_NO_PARTITION_FOUND, "" },
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{ "HA_ERR_RBR_LOGGING_FAILED", HA_ERR_RBR_LOGGING_FAILED, "" },
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{ "HA_ERR_DROP_INDEX_FK", HA_ERR_DROP_INDEX_FK, "" },
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{ "HA_ERR_FOREIGN_DUPLICATE_KEY", HA_ERR_FOREIGN_DUPLICATE_KEY, "" },
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{ "HA_ERR_TABLE_NEEDS_UPGRADE", HA_ERR_TABLE_NEEDS_UPGRADE, "" },
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{ "HA_ERR_TABLE_READONLY", HA_ERR_TABLE_READONLY, "" },
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{ "HA_ERR_AUTOINC_READ_FAILED", HA_ERR_AUTOINC_READ_FAILED, "" },
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{ "HA_ERR_AUTOINC_ERANGE", HA_ERR_AUTOINC_ERANGE, "" },
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{ "HA_ERR_GENERIC", HA_ERR_GENERIC, "" },
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{ "HA_ERR_RECORD_IS_THE_SAME", HA_ERR_RECORD_IS_THE_SAME, "" },
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{ "HA_ERR_LOGGING_IMPOSSIBLE", HA_ERR_LOGGING_IMPOSSIBLE, "" },
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{ "HA_ERR_CORRUPT_EVENT", HA_ERR_CORRUPT_EVENT, "" },
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{ "HA_ERR_NEW_FILE", HA_ERR_NEW_FILE, "" },
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{ "HA_ERR_ROWS_EVENT_APPLY", HA_ERR_ROWS_EVENT_APPLY, "" },
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{ "HA_ERR_INITIALIZATION", HA_ERR_INITIALIZATION, "" },
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{ "HA_ERR_FILE_TOO_SHORT", HA_ERR_FILE_TOO_SHORT, "" },
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{ "HA_ERR_WRONG_CRC", HA_ERR_WRONG_CRC, "" },
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{ "HA_ERR_TOO_MANY_CONCURRENT_TRXS", HA_ERR_TOO_MANY_CONCURRENT_TRXS, "" },
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{ "HA_ERR_INDEX_COL_TOO_LONG", HA_ERR_INDEX_COL_TOO_LONG, "" },
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{ "HA_ERR_INDEX_CORRUPT", HA_ERR_INDEX_CORRUPT, "" },
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{ "HA_ERR_UNDO_REC_TOO_BIG", HA_ERR_UNDO_REC_TOO_BIG, "" },
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{ "HA_ERR_ROW_NOT_VISIBLE", HA_ERR_ROW_NOT_VISIBLE, "" },
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{ "HA_ERR_ABORTED_BY_USER", HA_ERR_ABORTED_BY_USER, "" },
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{ "HA_ERR_DISK_FULL", HA_ERR_DISK_FULL, "" },
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{ "HA_ERR_INCOMPATIBLE_DEFINITION", HA_ERR_INCOMPATIBLE_DEFINITION, "" },
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