mirror of
https://github.com/MariaDB/server.git
synced 2025-01-30 18:41:56 +01:00
efc70da5fd
The background drop table queue in InnoDB is a work-around for cases where the SQL layer is requesting DDL on tables on which transactional locks exist. One such case are XA transactions. Our test case exploits the fact that the recovery of XA PREPARE transactions will only resurrect InnoDB table locks, but not MDL that should block any concurrent DDL. srv_shutdown_t: Introduce the srv_shutdown_state=SRV_SHUTDOWN_INITIATED for the initial part of shutdown, to wait for the background drop table queue to be emptied. srv_shutdown_bg_undo_sources(): Assign srv_shutdown_state=SRV_SHUTDOWN_INITIATED before waiting for the background drop table queue to be emptied. row_drop_tables_for_mysql_in_background(): On slow shutdown, if no active transactions exist (excluding ones that are in XA PREPARE state), skip any tables on which locks exist. row_drop_table_for_mysql(): Do not unnecessarily attempt to drop InnoDB persistent statistics for tables that have already been added to the background drop table queue. row_mysql_close(): Relax an assertion, and free all memory even if innodb_force_recovery=2 would prevent the background drop table queue from being emptied.
140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
/*****************************************************************************
|
|
|
|
Copyright (c) 1995, 2017, Oracle and/or its affiliates. All Rights Reserved.
|
|
Copyright (c) 2017, MariaDB Corporation.
|
|
|
|
This program is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free Software
|
|
Foundation; version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
|
|
|
|
*****************************************************************************/
|
|
|
|
/**************************************************//**
|
|
@file include/srv0start.h
|
|
Starts the Innobase database server
|
|
|
|
Created 10/10/1995 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#ifndef srv0start_h
|
|
#define srv0start_h
|
|
|
|
#include "log0log.h"
|
|
#include "ut0byte.h"
|
|
|
|
// Forward declaration
|
|
struct dict_table_t;
|
|
|
|
/** If buffer pool is less than the size,
|
|
only one buffer pool instance is used. */
|
|
#define BUF_POOL_SIZE_THRESHOLD (1024 * 1024 * 1024)
|
|
|
|
/** Open the configured number of dedicated undo tablespaces.
|
|
@param[in] create_new_db whether the database is being initialized
|
|
@return DB_SUCCESS or error code */
|
|
dberr_t
|
|
srv_undo_tablespaces_init(bool create_new_db);
|
|
|
|
/****************************************************************//**
|
|
Starts Innobase and creates a new database if database files
|
|
are not found and the user wants.
|
|
@return DB_SUCCESS or error code */
|
|
dberr_t
|
|
innobase_start_or_create_for_mysql();
|
|
|
|
/** Shut down InnoDB. */
|
|
void
|
|
innodb_shutdown();
|
|
|
|
/** Shut down background threads that can generate undo log. */
|
|
void
|
|
srv_shutdown_bg_undo_sources();
|
|
|
|
/*************************************************************//**
|
|
Copy the file path component of the physical file to parameter. It will
|
|
copy up to and including the terminating path separator.
|
|
@return number of bytes copied or ULINT_UNDEFINED if destination buffer
|
|
is smaller than the path to be copied. */
|
|
ulint
|
|
srv_path_copy(
|
|
/*==========*/
|
|
char* dest, /*!< out: destination buffer */
|
|
ulint dest_len, /*!< in: max bytes to copy */
|
|
const char* basedir, /*!< in: base directory */
|
|
const char* table_name) /*!< in: source table name */
|
|
MY_ATTRIBUTE((nonnull, warn_unused_result));
|
|
|
|
/** Get the meta-data filename from the table name for a
|
|
single-table tablespace.
|
|
@param[in] table table object
|
|
@param[out] filename filename
|
|
@param[in] max_len filename max length */
|
|
void
|
|
srv_get_meta_data_filename(
|
|
dict_table_t* table,
|
|
char* filename,
|
|
ulint max_len);
|
|
|
|
/** Get the encryption-data filename from the table name for a
|
|
single-table tablespace.
|
|
@param[in] table table object
|
|
@param[out] filename filename
|
|
@param[in] max_len filename max length */
|
|
void
|
|
srv_get_encryption_data_filename(
|
|
dict_table_t* table,
|
|
char* filename,
|
|
ulint max_len);
|
|
|
|
/** Log sequence number at shutdown */
|
|
extern lsn_t srv_shutdown_lsn;
|
|
/** Log sequence number immediately after startup */
|
|
extern lsn_t srv_start_lsn;
|
|
|
|
/** TRUE if the server is being started */
|
|
extern bool srv_is_being_started;
|
|
/** TRUE if SYS_TABLESPACES is available for lookups */
|
|
extern bool srv_sys_tablespaces_open;
|
|
/** TRUE if the server is being started, before rolling back any
|
|
incomplete transactions */
|
|
extern bool srv_startup_is_before_trx_rollback_phase;
|
|
|
|
/** TRUE if a raw partition is in use */
|
|
extern ibool srv_start_raw_disk_in_use;
|
|
|
|
/** Shutdown state */
|
|
enum srv_shutdown_t {
|
|
SRV_SHUTDOWN_NONE = 0, /*!< Database running normally */
|
|
/** Shutdown initiated in srv_shutdown_bg_undo_sources() */
|
|
SRV_SHUTDOWN_INITIATED,
|
|
SRV_SHUTDOWN_CLEANUP, /*!< Cleaning up in
|
|
logs_empty_and_mark_files_at_shutdown() */
|
|
SRV_SHUTDOWN_FLUSH_PHASE,/*!< At this phase the master and the
|
|
purge threads must have completed their
|
|
work. Once we enter this phase the
|
|
page_cleaner can clean up the buffer
|
|
pool and exit */
|
|
SRV_SHUTDOWN_LAST_PHASE,/*!< Last phase after ensuring that
|
|
the buffer pool can be freed: flush
|
|
all file spaces and close all files */
|
|
SRV_SHUTDOWN_EXIT_THREADS/*!< Exit all threads */
|
|
};
|
|
|
|
/** Whether any undo log records can be generated */
|
|
extern bool srv_undo_sources;
|
|
|
|
/** At a shutdown this value climbs from SRV_SHUTDOWN_NONE to
|
|
SRV_SHUTDOWN_CLEANUP and then to SRV_SHUTDOWN_LAST_PHASE, and so on */
|
|
extern enum srv_shutdown_t srv_shutdown_state;
|
|
|
|
/** Files comprising the system tablespace */
|
|
extern pfs_os_file_t files[1000];
|
|
#endif
|