diff options
| -rw-r--r-- | mysql-test/include/check-testcase.test | 5 | ||||
| -rw-r--r-- | mysql-test/suite/innodb/r/alter_crash.result | 21 | ||||
| -rw-r--r-- | mysql-test/suite/innodb/r/drop_table_background.result | 15 | ||||
| -rw-r--r-- | mysql-test/suite/innodb/t/alter_crash.test | 69 | ||||
| -rw-r--r-- | mysql-test/suite/innodb/t/drop_table_background.test | 14 | ||||
| -rw-r--r-- | storage/innobase/include/row0mysql.h | 4 | ||||
| -rw-r--r-- | storage/innobase/log/log0recv.cc | 2 | ||||
| -rw-r--r-- | storage/innobase/row/row0mysql.cc | 254 |
8 files changed, 191 insertions, 193 deletions
diff --git a/mysql-test/include/check-testcase.test b/mysql-test/include/check-testcase.test index a282201857e..4ca53989d06 100644 --- a/mysql-test/include/check-testcase.test +++ b/mysql-test/include/check-testcase.test @@ -82,7 +82,10 @@ call mtr.check_testcase(); let $datadir=`select @@datadir`; list_files $datadir mysql_upgrade_info; -list_files $datadir/test #sql*; +list_files_write_file $datadir.tempfiles.txt $datadir/test #sql*; +--replace_regex /#sql-ib[0-9a-f]+-[0-9a-f]+\.ibd\n// +cat_file $datadir.tempfiles.txt; +remove_file $datadir.tempfiles.txt; list_files $datadir/mysql #sql*; --enable_query_log diff --git a/mysql-test/suite/innodb/r/alter_crash.result b/mysql-test/suite/innodb/r/alter_crash.result index 8de02cc5fbd..df1645a4ef6 100644 --- a/mysql-test/suite/innodb/r/alter_crash.result +++ b/mysql-test/suite/innodb/r/alter_crash.result @@ -44,10 +44,9 @@ SET DEBUG_DBUG='+d,innodb_alter_commit_crash_after_commit'; ALTER TABLE t1 ADD PRIMARY KEY (f2, f1); ERROR HY000: Lost connection to MySQL server during query # Restart mysqld after the crash and reconnect. -# Manual *.frm recovery begin. -# Manual recovery end -FLUSH TABLES; -# Drop the orphaned original table. +SELECT * FROM information_schema.innodb_sys_tables +WHERE table_id = ID; +TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE # Files in datadir after manual recovery. t1.frm t1.ibd @@ -83,11 +82,9 @@ SET DEBUG_DBUG='+d,innodb_alter_commit_crash_before_commit'; ALTER TABLE t2 ADD PRIMARY KEY (f2, f1); ERROR HY000: Lost connection to MySQL server during query # Startup the server after the crash -# Read and remember the temporary table name -# Manual *.frm recovery begin. The dictionary was not updated -# and the files were not renamed. The rebuilt table -# was left behind on purpose, to faciliate data recovery. -# Manual recovery end +SELECT * FROM information_schema.innodb_sys_tables +WHERE name LIKE 'test/#sql-ib%'; +TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE # Drop the orphaned rebuilt table. SHOW TABLES; Tables_in_test @@ -123,10 +120,10 @@ SET DEBUG_DBUG='+d,innodb_alter_commit_crash_after_commit'; ALTER TABLE t1 ADD INDEX (b), CHANGE c d int, ALGORITHM=INPLACE; ERROR HY000: Lost connection to MySQL server during query # Restart mysqld after the crash and reconnect. -# Manual *.frm recovery begin. -# Manual recovery end +SELECT * FROM information_schema.innodb_sys_tables +WHERE table_id = ID; +TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE FLUSH TABLES; -# Drop the orphaned original table. # Files in datadir after manual recovery. t1.frm t1.ibd diff --git a/mysql-test/suite/innodb/r/drop_table_background.result b/mysql-test/suite/innodb/r/drop_table_background.result index a6f5672ba7f..e74bcd5e780 100644 --- a/mysql-test/suite/innodb/r/drop_table_background.result +++ b/mysql-test/suite/innodb/r/drop_table_background.result @@ -3,7 +3,22 @@ KEY(c1), KEY(c2), KEY(c2,c1), KEY(c3), KEY(c3,c1), KEY(c3,c2), KEY(c3,c2,c1), KEY(c4), KEY(c4,c1), KEY(c4,c2), KEY(c4,c2,c1), KEY(c4,c3), KEY(c4,c3,c1), KEY(c4,c3,c2), KEY(c4,c3,c2,c1)) ENGINE=InnoDB; +CREATE TABLE `#mysql50##sql-ib-foo`(a SERIAL) ENGINE=InnoDB; +INSERT INTO t (c1) VALUES (1),(2),(1); SET DEBUG_DBUG='+d,row_drop_table_add_to_background'; +CREATE TABLE target (PRIMARY KEY(c1)) ENGINE=InnoDB SELECT * FROM t; +ERROR 23000: Duplicate entry '1' for key 'PRIMARY' +SELECT * from target; +ERROR 42S02: Table 'test.target' doesn't exist DROP TABLE t; CREATE TABLE t (a INT) ENGINE=InnoDB; DROP TABLE t; +DROP TABLE target; +ERROR 42S02: Unknown table 'test.target' +CREATE TABLE target (a INT) ENGINE=InnoDB; +DROP TABLE target; +SELECT * FROM `#mysql50##sql-ib-foo`; +ERROR 42S02: Table 'test.#mysql50##sql-ib-foo' doesn't exist in engine +DROP TABLE `#mysql50##sql-ib-foo`; +Warnings: +Warning 1932 Table 'test.#mysql50##sql-ib-foo' doesn't exist in engine diff --git a/mysql-test/suite/innodb/t/alter_crash.test b/mysql-test/suite/innodb/t/alter_crash.test index b4fdfd2f2d5..c4ee895d192 100644 --- a/mysql-test/suite/innodb/t/alter_crash.test +++ b/mysql-test/suite/innodb/t/alter_crash.test @@ -75,28 +75,22 @@ ALTER TABLE t1 ADD PRIMARY KEY (f2, f1); --echo # Restart mysqld after the crash and reconnect. --source include/start_mysqld.inc -let $temp_table_name = `SELECT SUBSTR(name, 6) - FROM information_schema.innodb_sys_tables - WHERE table_id = $orig_table_id`; - ---echo # Manual *.frm recovery begin. - ---move_file $MYSQLD_DATADIR/test/t1.frm $MYSQLD_DATADIR/test/$temp_table_name.frm - +let TABLENAME_INC= $MYSQLTEST_VARDIR/tmp/tablename.inc; perl; -my @frm_file = glob "$ENV{'datadir'}/test/#sql-*.frm"; -my $t1_frm = "$ENV{'datadir'}/test/t1.frm"; -rename($frm_file[0], $t1_frm); +die unless open OUT, ">$ENV{TABLENAME_INC}"; +chdir "$ENV{'datadir'}/test"; +my @frm_file = map { substr($_, 0, -4) } glob "#sql-*.frm"; +print OUT 'let $tablename=', $frm_file[0], ';'; +close OUT or die; EOF +source $TABLENAME_INC; +remove_file $TABLENAME_INC; ---echo # Manual recovery end - -FLUSH TABLES; +--replace_result $orig_table_id ID +eval SELECT * FROM information_schema.innodb_sys_tables +WHERE table_id = $orig_table_id; ---echo # Drop the orphaned original table. ---disable_query_log -eval DROP TABLE `#mysql50#$temp_table_name`; ---enable_query_log +move_file $datadir/test/$tablename.frm $datadir/test/t1.frm; --echo # Files in datadir after manual recovery. --list_files $MYSQLD_DATADIR/test @@ -134,16 +128,9 @@ ALTER TABLE t2 ADD PRIMARY KEY (f2, f1); --echo # Startup the server after the crash --source include/start_mysqld.inc ---echo # Read and remember the temporary table name -let $temp_table_name = `SELECT SUBSTRING(name,6) - FROM information_schema.innodb_sys_tables - WHERE name LIKE "test/#sql-ib$orig_table_id%"`; - ---echo # Manual *.frm recovery begin. The dictionary was not updated ---echo # and the files were not renamed. The rebuilt table ---echo # was left behind on purpose, to faciliate data recovery. +SELECT * FROM information_schema.innodb_sys_tables +WHERE name LIKE 'test/#sql-ib%'; -let TABLENAME_INC= $MYSQLTEST_VARDIR/tmp/tablename.inc; perl; die unless open OUT, ">$ENV{TABLENAME_INC}"; chdir "$ENV{'datadir'}/test"; @@ -154,8 +141,6 @@ EOF source $TABLENAME_INC; remove_file $TABLENAME_INC; ---echo # Manual recovery end - --echo # Drop the orphaned rebuilt table. --disable_query_log eval DROP TABLE `#mysql50#$tablename`; @@ -198,28 +183,24 @@ ALTER TABLE t1 ADD INDEX (b), CHANGE c d int, ALGORITHM=INPLACE; --echo # Restart mysqld after the crash and reconnect. --source include/start_mysqld.inc -let $temp_table_name = `SELECT SUBSTR(name, 6) - FROM information_schema.innodb_sys_tables - WHERE table_id = $orig_table_id`; - ---echo # Manual *.frm recovery begin. ---move_file $MYSQLD_DATADIR/test/t1.frm $MYSQLD_DATADIR/test/$temp_table_name.frm +--replace_result $orig_table_id ID +eval SELECT * FROM information_schema.innodb_sys_tables +WHERE table_id = $orig_table_id; perl; -my @frm_file = glob "$ENV{'datadir'}/test/#sql-*.frm"; -my $t1_frm = "$ENV{'datadir'}/test/t1.frm"; -rename($frm_file[0], $t1_frm); +die unless open OUT, ">$ENV{TABLENAME_INC}"; +chdir "$ENV{'datadir'}/test"; +my @frm_file = map { substr($_, 0, -4) } glob "#sql-*.frm"; +print OUT 'let $tablename=', $frm_file[0], ';'; +close OUT or die; EOF ---echo # Manual recovery end +source $TABLENAME_INC; +remove_file $TABLENAME_INC; +move_file $datadir/test/$tablename.frm $datadir/test/t1.frm; FLUSH TABLES; ---echo # Drop the orphaned original table. ---disable_query_log -eval DROP TABLE `#mysql50#$temp_table_name`; ---enable_query_log - --echo # Files in datadir after manual recovery. --list_files $MYSQLD_DATADIR/test diff --git a/mysql-test/suite/innodb/t/drop_table_background.test b/mysql-test/suite/innodb/t/drop_table_background.test index 0f596dec574..8d82bea9675 100644 --- a/mysql-test/suite/innodb/t/drop_table_background.test +++ b/mysql-test/suite/innodb/t/drop_table_background.test @@ -9,6 +9,9 @@ KEY(c3), KEY(c3,c1), KEY(c3,c2), KEY(c3,c2,c1), KEY(c4), KEY(c4,c1), KEY(c4,c2), KEY(c4,c2,c1), KEY(c4,c3), KEY(c4,c3,c1), KEY(c4,c3,c2), KEY(c4,c3,c2,c1)) ENGINE=InnoDB; +CREATE TABLE `#mysql50##sql-ib-foo`(a SERIAL) ENGINE=InnoDB; +INSERT INTO t (c1) VALUES (1),(2),(1); + let $n= 10; SET DEBUG_DBUG='+d,row_drop_table_add_to_background'; @@ -24,7 +27,18 @@ while ($i) { dec $i; } --enable_query_log +--error ER_DUP_ENTRY +CREATE TABLE target (PRIMARY KEY(c1)) ENGINE=InnoDB SELECT * FROM t; +--error ER_NO_SUCH_TABLE +SELECT * from target; DROP TABLE t; --source include/restart_mysqld.inc CREATE TABLE t (a INT) ENGINE=InnoDB; DROP TABLE t; +--error ER_BAD_TABLE_ERROR +DROP TABLE target; +CREATE TABLE target (a INT) ENGINE=InnoDB; +DROP TABLE target; +--error ER_NO_SUCH_TABLE_IN_ENGINE +SELECT * FROM `#mysql50##sql-ib-foo`; +DROP TABLE `#mysql50##sql-ib-foo`; diff --git a/storage/innobase/include/row0mysql.h b/storage/innobase/include/row0mysql.h index a7a55d202e8..044e732c22d 100644 --- a/storage/innobase/include/row0mysql.h +++ b/storage/innobase/include/row0mysql.h @@ -420,6 +420,10 @@ ulint row_get_background_drop_list_len_low(void); /*======================================*/ +/** Drop garbage tables during recovery. */ +void +row_mysql_drop_garbage_tables(); + /*********************************************************************//** Sets an exclusive lock on a table. @return error code or DB_SUCCESS */ diff --git a/storage/innobase/log/log0recv.cc b/storage/innobase/log/log0recv.cc index 2e967a99121..93943620ecf 100644 --- a/storage/innobase/log/log0recv.cc +++ b/storage/innobase/log/log0recv.cc @@ -3410,6 +3410,8 @@ recv_recovery_rollback_active(void) /* Drop partially created indexes. */ row_merge_drop_temp_indexes(); + /* Drop garbage tables. */ + row_mysql_drop_garbage_tables(); /* Drop any auxiliary tables that were not dropped when the parent table was dropped. This can happen if the parent table diff --git a/storage/innobase/row/row0mysql.cc b/storage/innobase/row/row0mysql.cc index feff74138c4..cee05014d7f 100644 --- a/storage/innobase/row/row0mysql.cc +++ b/storage/innobase/row/row0mysql.cc @@ -64,6 +64,7 @@ Created 9/17/2000 Heikki Tuuri #include "trx0roll.h" #include "trx0undo.h" #include "row0ext.h" +#include "srv0start.h" #include "ut0new.h" #include <algorithm> @@ -75,7 +76,7 @@ ibool row_rollback_on_timeout = FALSE; /** Chain node of the list of tables to drop in the background. */ struct row_mysql_drop_t{ - char* table_name; /*!< table name */ + table_id_t table_id; /*!< table id */ UT_LIST_NODE_T(row_mysql_drop_t)row_mysql_drop_list; /*!< list chain node */ }; @@ -112,19 +113,6 @@ row_mysql_is_system_table( || 0 == strcmp(name + 6, "db")); } -/*********************************************************************//** -If a table is not yet in the drop list, adds the table to the list of tables -which the master thread drops in background. We need this on Unix because in -ALTER TABLE MySQL may call drop table even if the table has running queries on -it. Also, if there are running foreign key checks on the table, we drop the -table lazily. -@return TRUE if the table was not yet in the drop list, and was added there */ -static -ibool -row_add_table_to_background_drop_list( -/*==================================*/ - const char* name); /*!< in: table name */ - #ifdef UNIV_DEBUG /** Wait for the background drop list to become empty. */ void @@ -2778,6 +2766,7 @@ row_drop_table_for_mysql_in_background( trx_t* trx; trx = trx_allocate_for_background(); + ut_d(trx->persistent_stats = true); /* If the original transaction was dropping a table referenced by foreign keys, we must set the following to be able to drop the @@ -2789,13 +2778,8 @@ row_drop_table_for_mysql_in_background( error = row_drop_table_for_mysql(name, trx, FALSE, FALSE); - /* Flush the log to reduce probability that the .frm files and - the InnoDB data dictionary get out-of-sync if the user runs - with innodb_flush_log_at_trx_commit = 0 */ - - log_buffer_flush_to_disk(); - trx_commit_for_mysql(trx); + ut_d(trx->persistent_stats = false); trx_free_for_background(trx); @@ -2820,9 +2804,18 @@ loop: ut_a(row_mysql_drop_list_inited); - drop = UT_LIST_GET_FIRST(row_mysql_drop_list); + do { + drop = UT_LIST_GET_FIRST(row_mysql_drop_list); + + n_tables = UT_LIST_GET_LEN(row_mysql_drop_list); + + if (drop == NULL) { + break; + } - n_tables = UT_LIST_GET_LEN(row_mysql_drop_list); + UT_LIST_REMOVE(row_mysql_drop_list, drop); + MONITOR_DEC(MONITOR_BACKGROUND_DROP_TABLE); + } while (srv_shutdown_state != SRV_SHUTDOWN_NONE && srv_fast_shutdown); mutex_exit(&row_drop_list_mutex); @@ -2832,28 +2825,14 @@ loop: return(n_tables + n_tables_dropped); } - DBUG_EXECUTE_IF("row_drop_tables_in_background_sleep", - os_thread_sleep(5000000); - ); - - table = dict_table_open_on_name(drop->table_name, FALSE, FALSE, - DICT_ERR_IGNORE_NONE); + table = dict_table_open_on_id(drop->table_id, FALSE, + DICT_TABLE_OP_OPEN_ONLY_IF_CACHED); - if (table == NULL) { + if (!table || !table->to_be_dropped) { /* If for some reason the table has already been dropped through some other mechanism, do not try to drop it */ - - goto already_dropped; - } - - if (!table->to_be_dropped) { - /* There is a scenario: the old table is dropped - just after it's added into drop list, and new - table with the same name is created, then we try - to drop the new table in background. */ - dict_table_close(table, FALSE, FALSE); - - goto already_dropped; + ut_free(drop); + goto loop; } ut_a(!table->can_be_evicted); @@ -2861,32 +2840,18 @@ loop: dict_table_close(table, FALSE, FALSE); if (DB_SUCCESS != row_drop_table_for_mysql_in_background( - drop->table_name)) { + table->name.m_name)) { /* If the DROP fails for some table, we return, and let the main thread retry later */ - + mutex_enter(&row_drop_list_mutex); + UT_LIST_ADD_LAST(row_mysql_drop_list, drop); + MONITOR_INC(MONITOR_BACKGROUND_DROP_TABLE); + mutex_exit(&row_drop_list_mutex); return(n_tables + n_tables_dropped); } n_tables_dropped++; - -already_dropped: - mutex_enter(&row_drop_list_mutex); - - UT_LIST_REMOVE(row_mysql_drop_list, drop); - - MONITOR_DEC(MONITOR_BACKGROUND_DROP_TABLE); - - ib::info() << "Dropped table " - << ut_get_name(NULL, drop->table_name) - << " in background drop queue.", - - ut_free(drop->table_name); - ut_free(drop); - - mutex_exit(&row_drop_list_mutex); - goto loop; } @@ -2911,18 +2876,78 @@ row_get_background_drop_list_len_low(void) return(len); } -/*********************************************************************//** -If a table is not yet in the drop list, adds the table to the list of tables -which the master thread drops in background. We need this on Unix because in -ALTER TABLE MySQL may call drop table even if the table has running queries on -it. Also, if there are running foreign key checks on the table, we drop the -table lazily. -@return TRUE if the table was not yet in the drop list, and was added there */ +/** Drop garbage tables during recovery. */ +void +row_mysql_drop_garbage_tables() +{ + mem_heap_t* heap = mem_heap_create(FN_REFLEN); + btr_pcur_t pcur; + mtr_t mtr; + trx_t* trx = trx_allocate_for_background(); + trx->op_info = "dropping garbage tables"; + row_mysql_lock_data_dictionary(trx); + + mtr.start(); + btr_pcur_open_at_index_side( + true, dict_table_get_first_index(dict_sys->sys_tables), + BTR_SEARCH_LEAF, &pcur, true, 0, &mtr); + + for (;;) { + const rec_t* rec; + const byte* field; + ulint len; + const char* table_name; + + btr_pcur_move_to_next_user_rec(&pcur, &mtr); + + if (!btr_pcur_is_on_user_rec(&pcur)) { + break; + } + + rec = btr_pcur_get_rec(&pcur); + if (rec_get_deleted_flag(rec, 0)) { + continue; + } + + field = rec_get_nth_field_old(rec, 0/*NAME*/, &len); + if (len == UNIV_SQL_NULL || len == 0) { + /* Corrupted SYS_TABLES.NAME */ + continue; + } + + table_name = mem_heap_strdupl( + heap, + reinterpret_cast<const char*>(field), len); + if (strstr(table_name, "/" TEMP_FILE_PREFIX_INNODB)) { + btr_pcur_store_position(&pcur, &mtr); + btr_pcur_commit_specify_mtr(&pcur, &mtr); + + if (dict_load_table(table_name, true, + DICT_ERR_IGNORE_ALL)) { + row_drop_table_for_mysql( + table_name, trx, FALSE, FALSE); + trx_commit_for_mysql(trx); + } + + mtr.start(); + btr_pcur_restore_position(BTR_SEARCH_LEAF, + &pcur, &mtr); + } + + mem_heap_empty(heap); + } + + btr_pcur_close(&pcur); + mtr.commit(); + row_mysql_unlock_data_dictionary(trx); + trx_free_for_background(trx); + mem_heap_free(heap); +} + +/** Enqueue a table to be dropped in the background. */ static -ibool -row_add_table_to_background_drop_list( -/*==================================*/ - const char* name) /*!< in: table name */ +void +row_add_table_to_background_drop_list(table_id_t table_id) { row_mysql_drop_t* drop; @@ -2935,27 +2960,21 @@ row_add_table_to_background_drop_list( drop != NULL; drop = UT_LIST_GET_NEXT(row_mysql_drop_list, drop)) { - if (strcmp(drop->table_name, name) == 0) { - /* Already in the list */ - - mutex_exit(&row_drop_list_mutex); - - return(FALSE); + if (drop->table_id == table_id) { + goto func_exit; } } drop = static_cast<row_mysql_drop_t*>( ut_malloc_nokey(sizeof(row_mysql_drop_t))); - drop->table_name = mem_strdup(name); + drop->table_id = table_id; UT_LIST_ADD_LAST(row_mysql_drop_list, drop); MONITOR_INC(MONITOR_BACKGROUND_DROP_TABLE); - +func_exit: mutex_exit(&row_drop_list_mutex); - - return(TRUE); } /** Reassigns the table identifier of a table. @@ -3688,11 +3707,7 @@ row_drop_table_for_mysql( } - DBUG_EXECUTE_IF("row_drop_table_add_to_background", - row_add_table_to_background_drop_list(table->name.m_name); - err = DB_SUCCESS; - goto funct_exit; - ); + DBUG_EXECUTE_IF("row_drop_table_add_to_background", goto defer;); /* TODO: could we replace the counter n_foreign_key_checks_running with lock checks on the table? Acquire here an exclusive lock on the @@ -3701,28 +3716,22 @@ row_drop_table_for_mysql( checks take an IS or IX lock on the table. */ if (table->n_foreign_key_checks_running > 0) { - - const char* save_tablename = table->name.m_name; - ibool added; - - added = row_add_table_to_background_drop_list(save_tablename); - - if (added) { - ib::info() << "You are trying to drop table " - << table->name - << " though there is a foreign key check" - " running on it. Adding the table to the" - " background drop queue."; - - /* We return DB_SUCCESS to MySQL though the drop will - happen lazily later */ - - err = DB_SUCCESS; +defer: + if (!strstr(table->name.m_name, "/" TEMP_FILE_PREFIX_INNODB)) { + heap = mem_heap_create(FN_REFLEN); + const char* tmp_name + = dict_mem_create_temporary_tablename( + heap, table->name.m_name, table->id); + ib::info() << "Deferring DROP TABLE " << table->name + << "; renaming to " << tmp_name; + err = row_rename_table_for_mysql( + table->name.m_name, tmp_name, trx, false); } else { - /* The table is already in the background drop list */ - err = DB_ERROR; + err = DB_SUCCESS; + } + if (err == DB_SUCCESS) { + row_add_table_to_background_drop_list(table->id); } - goto funct_exit; } @@ -3743,31 +3752,9 @@ row_drop_table_for_mysql( /* Wait on background threads to stop using table */ fil_wait_crypt_bg_threads(table); - if (table->get_ref_count() == 0) { - lock_remove_all_on_table(table, TRUE); - ut_a(table->n_rec_locks == 0); - } else if (table->get_ref_count() > 0 || table->n_rec_locks > 0) { - ibool added; - - added = row_add_table_to_background_drop_list( - table->name.m_name); - - if (added) { - ib::info() << "MySQL is trying to drop table " - << table->name - << " though there are still open handles to" - " it. Adding the table to the background drop" - " queue."; - - /* We return DB_SUCCESS to MySQL though the drop will - happen lazily later */ - err = DB_SUCCESS; - } else { - /* The table is already in the background drop list */ - err = DB_ERROR; - } - - goto funct_exit; + if (table->get_ref_count() > 0 || table->n_rec_locks > 0 + || lock_table_has_locks(table)) { + goto defer; } /* The "to_be_dropped" marks table that is to be dropped, but @@ -3777,11 +3764,6 @@ row_drop_table_for_mysql( and it is free to be dropped */ table->to_be_dropped = false; - /* If we get this far then the table to be dropped must not have - any table or record locks on it. */ - - ut_a(!lock_table_has_locks(table)); - switch (trx_get_dict_operation(trx)) { case TRX_DICT_OP_NONE: trx_set_dict_operation(trx, TRX_DICT_OP_TABLE); |