sysvars_innodb.result 76.7 KB
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select * from information_schema.system_variables
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where variable_name like 'innodb%' and
variable_name not in (
'innodb_disallow_writes',           # only available WITH_WSREP
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'innodb_numa_interleave',           # only available WITH_NUMA
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'innodb_sched_priority_cleaner',    # linux only
'innodb_use_native_aio')            # default value depends on OS
order by variable_name;
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VARIABLE_NAME	INNODB_ADAPTIVE_FLUSHING
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Attempt flushing dirty pages to avoid IO bursts at checkpoints.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_ADAPTIVE_FLUSHING_LWM
SESSION_VALUE	NULL
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GLOBAL_VALUE	10.000000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	10.000000
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VARIABLE_SCOPE	GLOBAL
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VARIABLE_TYPE	DOUBLE
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VARIABLE_COMMENT	Percentage of log capacity below which no adaptive flushing happens.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	70
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NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ADAPTIVE_HASH_INDEX
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB adaptive hash index (enabled by default).  Disable with --skip-innodb-adaptive-hash-index.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_ADAPTIVE_HASH_INDEX_PARTS
SESSION_VALUE	NULL
GLOBAL_VALUE	8
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of InnoDB Adapative Hash Index Partitions. (default = 8). 
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	512
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_ADAPTIVE_MAX_SLEEP_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	150000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	150000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The upper limit of the sleep delay in usec. Value of 0 disables it.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_API_BK_COMMIT_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	5
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	5
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Background commit interval in seconds
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1073741824
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_API_DISABLE_ROWLOCK
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable row lock when direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_API_ENABLE_BINLOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable binlog for applications direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_API_ENABLE_MDL
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable MDL for applications direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_API_TRX_LEVEL
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB API transaction isolation level
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	3
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_AUTOEXTEND_INCREMENT
SESSION_VALUE	NULL
GLOBAL_VALUE	64
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	64
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Data file autoextend increment in megabytes
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_AUTOINC_LOCK_MODE
SESSION_VALUE	NULL
GLOBAL_VALUE	1
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
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VARIABLE_COMMENT	The AUTOINC lock modes supported by InnoDB: 0 => Old style AUTOINC locking (for backward compatibility); 1 => New style AUTOINC locking; 2 => No AUTOINC locking (unsafe for SBR)
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NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BACKGROUND_DROP_LIST_EMPTY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Wait for the background drop list to become empty
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_CHECK_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	3600
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	3600
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	check if spaces needs scrubbing every innodb_background_scrub_data_check_interval seconds
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_COMPRESSED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable scrubbing of compressed data by background threads (same as encryption_threads)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	604800
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	604800
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	scrub spaces that were last scrubbed longer than  innodb_background_scrub_data_interval seconds ago
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_UNCOMPRESSED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable scrubbing of uncompressed data by background threads (same as encryption_threads)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUFFER_POOL_CHUNK_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8388608
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	134217728
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Size of a single memory chunk within each buffer pool instance for resizing buffer pool. Online buffer pool resizing happens at this granularity. 0 means disable resizing buffer pool.
NUMERIC_MIN_VALUE	1048576
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1048576
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUFFER_POOL_DUMP_AT_SHUTDOWN
SESSION_VALUE	NULL
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GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
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VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Dump the buffer pool into a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_DUMP_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Trigger an immediate dump of the buffer pool into a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUFFER_POOL_DUMP_PCT
SESSION_VALUE	NULL
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GLOBAL_VALUE	25
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	25
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VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
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VARIABLE_COMMENT	Dump only the hottest N% of each buffer pool, defaults to 25
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NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUFFER_POOL_EVICT
SESSION_VALUE	NULL
GLOBAL_VALUE	
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Evict pages from the buffer pool
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_FILENAME
SESSION_VALUE	NULL
GLOBAL_VALUE	ib_buffer_pool
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ib_buffer_pool
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Filename to/from which to dump/load the InnoDB buffer pool
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_INSTANCES
SESSION_VALUE	NULL
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GLOBAL_VALUE	1
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
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VARIABLE_TYPE	BIGINT UNSIGNED
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VARIABLE_COMMENT	Number of buffer pool instances, set to higher value on high-end machines to increase scalability
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	64
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NUMERIC_BLOCK_SIZE	0
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ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_LOAD_ABORT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Abort a currently running load of the buffer pool
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_LOAD_AT_STARTUP
SESSION_VALUE	NULL
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GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
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VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Load the buffer pool from a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_LOAD_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Trigger an immediate load of the buffer pool from a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8388608
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GLOBAL_VALUE_ORIGIN	CONFIG
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DEFAULT_VALUE	134217728
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	The size of the memory buffer InnoDB uses to cache data and indexes of its tables.
NUMERIC_MIN_VALUE	5242880
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1048576
ENUM_VALUE_LIST	NULL
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READ_ONLY	NO
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COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUF_DUMP_STATUS_FREQUENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	A number between [0, 100] that tells how oftern buffer pool dump status in percentages should be printed. E.g. 10 means that buffer pool dump status is printed when every 10% of number of buffer pool pages are dumped. Default is 0 (only start and end status is printed).
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUF_FLUSH_LIST_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Force dirty page flush now
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_CHANGE_BUFFERING
SESSION_VALUE	NULL
GLOBAL_VALUE	all
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	all
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Buffer changes to reduce random access: OFF, ON, inserting, deleting, changing, or purging.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CHANGE_BUFFERING_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Debug flags for InnoDB change buffering (0=none, 2=crash at merge)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CHANGE_BUFFER_MAX_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	25
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	25
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Maximum on-disk size of change buffer in terms of percentage of the buffer pool.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	50
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CHECKSUMS
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	DEPRECATED. Use innodb_checksum_algorithm=NONE instead of setting this to OFF. Enable InnoDB checksums validation (enabled by default). Disable with --skip-innodb-checksums.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_CHECKSUM_ALGORITHM
SESSION_VALUE	NULL
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GLOBAL_VALUE	crc32
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	crc32
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VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
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VARIABLE_COMMENT	The algorithm InnoDB uses for page checksumming. Possible values are CRC32 (hardware accelerated if the CPU supports it) write crc32, allow any of the other checksums to match when reading; STRICT_CRC32 write crc32, do not allow other algorithms to match when reading; INNODB write a software calculated checksum, allow any other checksums to match when reading; STRICT_INNODB write a software calculated checksum, do not allow other algorithms to match when reading; NONE write a constant magic number, do not do any checksum verification when reading (same as innodb_checksums=OFF); STRICT_NONE write a constant magic number, do not allow values other than that magic number when reading; Files updated when this option is set to crc32 or strict_crc32 will not be readable by MariaDB versions older than 10.0.4
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NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	crc32,strict_crc32,innodb,strict_innodb,none,strict_none
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CMP_PER_INDEX_ENABLED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable INFORMATION_SCHEMA.innodb_cmp_per_index, may have negative impact on performance (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_COMMIT_CONCURRENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Helps in performance tuning in heavily concurrent environments.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_COMPRESSION_ALGORITHM
SESSION_VALUE	NULL
GLOBAL_VALUE	none
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	none
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, or bzip2
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	none,zlib,lz4,lzo,lzma,bzip2,snappy
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_COMPRESSION_DEFAULT
SESSION_VALUE	OFF
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Is compression the default for new tables
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	OFF,ON
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_COMPRESSION_FAILURE_THRESHOLD_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	5
558
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
559 560 561 562 563 564 565 566 567 568 569 570 571
DEFAULT_VALUE	5
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	If the compression failure rate of a table is greater than this number more padding is added to the pages to reduce the failures. A value of zero implies no padding
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_COMPRESSION_LEVEL
SESSION_VALUE	NULL
GLOBAL_VALUE	6
572
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
573 574 575 576 577 578 579 580 581 582 583 584 585
DEFAULT_VALUE	6
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Compression level used for zlib compression.  0 is no compression, 1 is fastest, 9 is best compression and default is 6.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	9
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_COMPRESSION_PAD_PCT_MAX
SESSION_VALUE	NULL
GLOBAL_VALUE	50
586
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
587 588 589 590 591 592 593 594 595 596 597 598 599
DEFAULT_VALUE	50
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Percentage of empty space on a data page that can be reserved to make the page compressible.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	75
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_CONCURRENCY_TICKETS
SESSION_VALUE	NULL
GLOBAL_VALUE	5000
600
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
601 602 603 604 605 606 607 608 609 610 611 612 613
DEFAULT_VALUE	5000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DATA_FILE_PATH
SESSION_VALUE	NULL
GLOBAL_VALUE	ibdata1:12M:autoextend
614
GLOBAL_VALUE_ORIGIN	CONFIG
615 616 617 618 619 620 621 622 623 624
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Path to individual files and their sizes.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
625 626 627 628 629 630
VARIABLE_NAME	INNODB_DATA_FILE_SIZE_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
631
VARIABLE_TYPE	INT UNSIGNED
632 633 634 635 636 637 638
VARIABLE_COMMENT	InnoDB system tablespace size to be set in recovery.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
639 640 641
VARIABLE_NAME	INNODB_DATA_HOME_DIR
SESSION_VALUE	NULL
GLOBAL_VALUE	
642
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
643 644 645 646 647 648 649 650 651 652
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	The common part for InnoDB table spaces.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
653 654 655 656 657 658 659 660 661 662 663
VARIABLE_NAME	INNODB_DEBUG_FORCE_SCRUBBING
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Perform extra scrubbing to increase test exposure
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
664
ENUM_VALUE_LIST	OFF,ON
665 666
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
667 668
VARIABLE_NAME	INNODB_DEFAULT_ENCRYPTION_KEY_ID
SESSION_VALUE	1
669 670 671
GLOBAL_VALUE	1
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	1
672
VARIABLE_SCOPE	SESSION
673
VARIABLE_TYPE	INT UNSIGNED
674
VARIABLE_COMMENT	Default encryption key id used for table encryption.
675
NUMERIC_MIN_VALUE	1
676
NUMERIC_MAX_VALUE	4294967295
677 678 679 680
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
681 682 683 684 685 686 687 688 689 690 691 692 693 694
VARIABLE_NAME	INNODB_DEFAULT_ROW_FORMAT
SESSION_VALUE	NULL
GLOBAL_VALUE	dynamic
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	dynamic
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	The default ROW FORMAT for all innodb tables created without explicit ROW_FORMAT. Possible values are REDUNDANT, COMPACT, and DYNAMIC. The ROW_FORMAT value COMPRESSED is not allowed
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	redundant,compact,dynamic
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
695 696 697
VARIABLE_NAME	INNODB_DEFRAGMENT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
698
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
699 700 701 702 703 704 705
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable/disable InnoDB defragmentation (default FALSE). When set to FALSE, all existing defragmentation will be paused. And new defragmentation command will fail.Paused defragmentation commands will resume when this variable is set to true again.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
706
ENUM_VALUE_LIST	OFF,ON
707 708 709 710 711
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_FILL_FACTOR
SESSION_VALUE	NULL
GLOBAL_VALUE	0.900000
712
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
713 714 715 716 717 718 719 720 721 722 723 724 725
DEFAULT_VALUE	0.900000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	DOUBLE
VARIABLE_COMMENT	A number between [0.7, 1] that tells defragmentation how full it should fill a page. Default is 0.9. Number below 0.7 won't make much sense.This variable, together with innodb_defragment_fill_factor_n_recs, is introduced so defragmentation won't pack the page too full and cause page split on the next insert on every page. The variable indicating more defragmentation gain is the one effective.
NUMERIC_MIN_VALUE	0.7
NUMERIC_MAX_VALUE	1
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_FILL_FACTOR_N_RECS
SESSION_VALUE	NULL
GLOBAL_VALUE	20
726
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
727 728 729 730 731 732 733 734 735 736 737 738 739
DEFAULT_VALUE	20
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	How many records of space defragmentation should leave on the page. This variable, together with innodb_defragment_fill_factor, is introduced so defragmentation won't pack the page too full and cause page split on the next insert on every page. The variable indicating more defragmentation gain is the one effective.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_FREQUENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	40
740
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
741 742 743 744 745 746 747 748 749 750 751 752 753
DEFAULT_VALUE	40
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Do not defragment a single index more than this number of time per second.This controls the number of time defragmentation thread can request X_LOCK on an index. Defragmentation thread will check whether 1/defragment_frequency (s) has passed since it worked on this index last time, and put the index back to the queue if not enough time has passed. The actual frequency can only be lower than this given number.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_N_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	7
754
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
755 756 757 758 759 760 761 762 763 764 765 766 767
DEFAULT_VALUE	7
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Number of pages considered at once when merging multiple pages to defragment
NUMERIC_MIN_VALUE	2
NUMERIC_MAX_VALUE	32
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_STATS_ACCURACY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
768
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
769 770 771 772 773 774 775 776 777 778
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	How many defragment stats changes there are before the stats are written to persistent storage. Set to 0 meaning disable defragment stats tracking.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
779 780 781 782 783 784 785 786 787 788 789
VARIABLE_NAME	INNODB_DICT_STATS_DISABLED_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable dict_stats thread
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
790
ENUM_VALUE_LIST	OFF,ON
791 792
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
793 794 795
VARIABLE_NAME	INNODB_DISABLE_BACKGROUND_MERGE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
796
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
797 798 799 800 801 802 803
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable change buffering merges by the master thread
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
804
ENUM_VALUE_LIST	OFF,ON
805 806
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
807 808 809 810 811 812 813 814 815 816 817
VARIABLE_NAME	INNODB_DISABLE_RESIZE_BUFFER_POOL_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable resizing buffer pool to make assertion code not expensive.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
818
ENUM_VALUE_LIST	OFF,ON
819 820
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
821 822 823
VARIABLE_NAME	INNODB_DISABLE_SORT_FILE_CACHE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
824
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
825 826 827 828 829 830 831
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to disable OS system file cache for sort I/O
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
832
ENUM_VALUE_LIST	OFF,ON
833 834 835 836 837
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_DOUBLEWRITE
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
838
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
839 840 841 842 843 844 845
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB doublewrite buffer (enabled by default). Disable with --skip-innodb-doublewrite.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
846
ENUM_VALUE_LIST	OFF,ON
847 848 849 850 851
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_DOUBLEWRITE_BATCH_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	120
852
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
853 854 855 856 857 858 859 860 861 862
DEFAULT_VALUE	120
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of pages reserved in doublewrite buffer for batch flushing
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	127
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_ENCRYPTION_ROTATE_KEY_AGE
SESSION_VALUE	NULL
GLOBAL_VALUE	1
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
870
VARIABLE_COMMENT	Key rotation - re-encrypt in background all pages that were encrypted with a key that many (or more) versions behind
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NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ENCRYPTION_ROTATION_IOPS
SESSION_VALUE	NULL
GLOBAL_VALUE	100
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	100
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Use this many iops for background key rotation
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ENCRYPTION_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
898
VARIABLE_COMMENT	Number of threads performing background key rotation and scrubbing
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899 900 901 902 903 904 905 906 907 908 909 910 911
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ENCRYPT_LOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
912
VARIABLE_COMMENT	Enable redo log encryption
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913 914 915
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
916
ENUM_VALUE_LIST	OFF,ON
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917 918 919 920 921 922 923 924
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_ENCRYPT_TABLES
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
925 926
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	Enable encryption for tables. Don't forget to enable --innodb-encrypt-log too
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927 928 929
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
930
ENUM_VALUE_LIST	OFF,ON,FORCE
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931
READ_ONLY	NO
932
COMMAND_LINE_ARGUMENT	OPTIONAL
933 934 935
VARIABLE_NAME	INNODB_FAST_SHUTDOWN
SESSION_VALUE	NULL
GLOBAL_VALUE	1
936
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
937 938 939 940 941 942 943 944 945 946
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Speeds up the shutdown process of the InnoDB storage engine. Possible values are 0, 1 (faster) or 2 (fastest - crash-like).
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
947 948 949 950 951 952 953 954 955 956 957 958 959 960
VARIABLE_NAME	INNODB_FATAL_SEMAPHORE_WAIT_THRESHOLD
SESSION_VALUE	NULL
GLOBAL_VALUE	600
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	600
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum number of seconds that semaphore times out in InnoDB.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
961 962
VARIABLE_NAME	INNODB_FILE_FORMAT
SESSION_VALUE	NULL
963
GLOBAL_VALUE	Barracuda
964
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
965
DEFAULT_VALUE	Barracuda
966 967 968 969 970 971 972 973 974 975 976 977
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	File format to use for new tables in .ibd files.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FILE_FORMAT_CHECK
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
978
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
979 980 981 982 983 984 985
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to perform system file format check.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
986
ENUM_VALUE_LIST	OFF,ON
987 988 989 990
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_FILE_FORMAT_MAX
SESSION_VALUE	NULL
991
GLOBAL_VALUE	Barracuda
992
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
DEFAULT_VALUE	Antelope
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	The highest file format in the tablespace.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FILE_PER_TABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
1006
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1007 1008 1009 1010 1011 1012 1013
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Stores each InnoDB table to an .ibd file in the database dir.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1014
ENUM_VALUE_LIST	OFF,ON
1015 1016
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
VARIABLE_NAME	INNODB_FILL_FACTOR
SESSION_VALUE	NULL
GLOBAL_VALUE	100
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	100
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Percentage of B-tree page filled during bulk insert
NUMERIC_MIN_VALUE	10
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1031 1032 1033
VARIABLE_NAME	INNODB_FIL_MAKE_PAGE_DIRTY_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1034
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Make the first page of the given tablespace dirty.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FLUSHING_AVG_LOOPS
SESSION_VALUE	NULL
GLOBAL_VALUE	30
1048
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061
DEFAULT_VALUE	30
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of iterations over which the background flushing is averaged.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FLUSH_LOG_AT_TIMEOUT
SESSION_VALUE	NULL
GLOBAL_VALUE	3
1062
GLOBAL_VALUE_ORIGIN	CONFIG
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Write and flush logs every (n) second.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2700
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FLUSH_LOG_AT_TRX_COMMIT
SESSION_VALUE	NULL
GLOBAL_VALUE	1
1076
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Controls the durability/speed trade-off for commits. Set to 0 (write and flush redo log to disk only once per second), 1 (flush to disk at each commit), 2 (write to log at commit but flush to disk only once per second) or 3 (flush to disk at prepare and at commit, slower and usually redundant). 1 and 3 guarantees that after a crash, committed transactions will not be lost and will be consistent with the binlog and other transactional engines. 2 can get inconsistent and lose transactions if there is a power failure or kernel crash but not if mysqld crashes. 0 has no guarantees in case of crash. 0 and 2 can be faster than 1 or 3.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	3
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FLUSH_METHOD
SESSION_VALUE	NULL
GLOBAL_VALUE	
1090
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	With which method to flush data.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FLUSH_NEIGHBORS
SESSION_VALUE	NULL
GLOBAL_VALUE	1
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Set to 0 (don't flush neighbors from buffer pool), 1 (flush contiguous neighbors from buffer pool) or 2 (flush neighbors from buffer pool), when flushing a block
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125
VARIABLE_NAME	INNODB_FLUSH_SYNC
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Allow IO bursts at the checkpoints ignoring io_capacity setting.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
1127 1128
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
1129 1130 1131
VARIABLE_NAME	INNODB_FORCE_LOAD_CORRUPTED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1133 1134 1135 1136 1137 1138 1139
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Force InnoDB to load metadata of corrupted table.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_FORCE_PRIMARY_KEY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1147 1148 1149 1150 1151 1152 1153
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Do not allow to create table without primary key (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FORCE_RECOVERY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Helps to save your data in case the disk image of the database becomes corrupt.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	6
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_AUX_TABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1174
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1175 1176 1177 1178 1179 1180 1181 1182 1183
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	FTS internal auxiliary table to be checked
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
1184
COMMAND_LINE_ARGUMENT	REQUIRED
1185 1186 1187
VARIABLE_NAME	INNODB_FT_CACHE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8000000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
DEFAULT_VALUE	8000000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search cache size in bytes
NUMERIC_MIN_VALUE	1600000
NUMERIC_MAX_VALUE	80000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_ENABLE_DIAG_PRINT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to enable additional FTS diagnostic printout 
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_ENABLE_STOPWORD
SESSION_VALUE	ON
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Create FTS index with stopword.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
1225 1226 1227 1228 1229
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_MAX_TOKEN_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	84
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
DEFAULT_VALUE	84
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search maximum token size in characters
NUMERIC_MIN_VALUE	10
NUMERIC_MAX_VALUE	84
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_MIN_TOKEN_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	3
1244
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
DEFAULT_VALUE	3
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search minimum token size in characters
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	16
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_NUM_WORD_OPTIMIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	2000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	2000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search number of words to optimize for each optimize table call 
NUMERIC_MIN_VALUE	1000
NUMERIC_MAX_VALUE	10000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_RESULT_CACHE_LIMIT
SESSION_VALUE	NULL
GLOBAL_VALUE	2000000000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
DEFAULT_VALUE	2000000000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search query result cache limit in bytes
NUMERIC_MIN_VALUE	1000000
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_SERVER_STOPWORD_TABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1286
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	The user supplied stopword table name.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_SORT_PLL_DEGREE
SESSION_VALUE	NULL
GLOBAL_VALUE	2
1300
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313
DEFAULT_VALUE	2
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search parallel sort degree, will round up to nearest power of 2 number
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	16
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_TOTAL_CACHE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	640000000
1314
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327
DEFAULT_VALUE	640000000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Total memory allocated for InnoDB Fulltext Search cache
NUMERIC_MIN_VALUE	32000000
NUMERIC_MAX_VALUE	1600000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_USER_STOPWORD_TABLE
SESSION_VALUE	
GLOBAL_VALUE	
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1329 1330 1331 1332 1333 1334 1335 1336 1337 1338
DEFAULT_VALUE	
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	User supplied stopword table name, effective in the session level.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_IDLE_FLUSH_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	100
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	100
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Up to what percentage of dirty pages should be flushed when innodb finds it has spare resources to do so.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_IMMEDIATE_SCRUB_DATA_UNCOMPRESSED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable scrubbing of data
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
VARIABLE_NAME	INNODB_INSTRUMENT_SEMAPHORES
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable semaphore request instrumentation. This could have some effect on performance but allows better information on long semaphore wait problems. (Default: not enabled)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	OFF,ON
1379 1380
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1381 1382 1383
VARIABLE_NAME	INNODB_IO_CAPACITY
SESSION_VALUE	NULL
GLOBAL_VALUE	200
1384
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
DEFAULT_VALUE	200
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of IOPs the server can do. Tunes the background IO rate
NUMERIC_MIN_VALUE	100
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_IO_CAPACITY_MAX
SESSION_VALUE	NULL
GLOBAL_VALUE	2000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410
DEFAULT_VALUE	18446744073709551615
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Limit to which innodb_io_capacity can be inflated.
NUMERIC_MIN_VALUE	100
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LARGE_PREFIX
SESSION_VALUE	NULL
1411
GLOBAL_VALUE	ON
1412
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1413
DEFAULT_VALUE	ON
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VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Support large index prefix length of REC_VERSION_56_MAX_INDEX_COL_LEN (3072) bytes.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1420
ENUM_VALUE_LIST	OFF,ON
1421 1422 1423 1424 1425
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Artificially limit the number of records per B-tree page (0=unlimited).
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOCKS_UNSAFE_FOR_BINLOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1440
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1441 1442 1443 1444 1445 1446 1447
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	DEPRECATED. This option may be removed in future releases. Please use READ COMMITTED transaction isolation level instead. Force InnoDB to not use next-key locking, to use only row-level locking.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1448
ENUM_VALUE_LIST	OFF,ON
1449 1450
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
1451 1452
VARIABLE_NAME	INNODB_LOCK_SCHEDULE_ALGORITHM
SESSION_VALUE	NULL
1453
GLOBAL_VALUE	vats
1454
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1455
DEFAULT_VALUE	vats
1456 1457 1458 1459 1460 1461 1462 1463 1464
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	The algorithm Innodb uses for deciding which locks to grant next when a lock is released. Possible values are FCFS grant the locks in First-Come-First-Served order; VATS use the Variance-Aware-Transaction-Scheduling algorithm, which uses an Eldest-Transaction-First heuristic.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	fcfs,vats
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1465 1466 1467
VARIABLE_NAME	INNODB_LOCK_WAIT_TIMEOUT
SESSION_VALUE	50
GLOBAL_VALUE	50
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481
DEFAULT_VALUE	50
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. Values above 100000000 disable the timeout.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1073741824
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_BUFFER_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1048576
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GLOBAL_VALUE_ORIGIN	CONFIG
1483
DEFAULT_VALUE	16777216
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VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	The size of the buffer which InnoDB uses to write log to the log files on disk.
NUMERIC_MIN_VALUE	262144
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1024
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_CHECKPOINT_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1497 1498 1499 1500 1501 1502 1503
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Force checkpoint now
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1504
ENUM_VALUE_LIST	OFF,ON
1505 1506
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517
VARIABLE_NAME	INNODB_LOG_CHECKSUMS
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to compute and require checksums for InnoDB redo log blocks
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1518
ENUM_VALUE_LIST	OFF,ON
1519 1520
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1521 1522
VARIABLE_NAME	INNODB_LOG_COMPRESSED_PAGES
SESSION_VALUE	NULL
1523
GLOBAL_VALUE	OFF
1524
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1525
DEFAULT_VALUE	OFF
1526 1527 1528 1529 1530 1531
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enables/disables the logging of entire compressed page images. InnoDB logs the compressed pages to prevent corruption if the zlib compression algorithm changes. When turned OFF, InnoDB will assume that the zlib compression algorithm doesn't change.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1532
ENUM_VALUE_LIST	OFF,ON
1533 1534 1535 1536 1537
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_LOG_FILES_IN_GROUP
SESSION_VALUE	NULL
GLOBAL_VALUE	2
1538
GLOBAL_VALUE_ORIGIN	CONFIG
1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551
DEFAULT_VALUE	2
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of log files in the log group. InnoDB writes to the files in a circular fashion.
NUMERIC_MIN_VALUE	2
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_FILE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	5242880
1552
GLOBAL_VALUE_ORIGIN	CONFIG
1553 1554 1555 1556
DEFAULT_VALUE	50331648
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Size of each log file in a log group.
1557
NUMERIC_MIN_VALUE	4194304
1558 1559 1560 1561 1562 1563 1564 1565
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1048576
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_GROUP_HOME_DIR
SESSION_VALUE	NULL
GLOBAL_VALUE	PATH
1566
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Path to InnoDB log files.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590
VARIABLE_NAME	INNODB_LOG_WRITE_AHEAD_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8192
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	8192
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Redo log write ahead unit size to avoid read-on-write, it should match the OS cache block IO size
NUMERIC_MIN_VALUE	512
NUMERIC_MAX_VALUE	16384
NUMERIC_BLOCK_SIZE	512
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1591 1592 1593
VARIABLE_NAME	INNODB_LRU_SCAN_DEPTH
SESSION_VALUE	NULL
GLOBAL_VALUE	100
1594
GLOBAL_VALUE_ORIGIN	CONFIG
1595 1596 1597 1598 1599 1600 1601 1602 1603 1604
DEFAULT_VALUE	1024
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	How deep to scan LRU to keep it clean
NUMERIC_MIN_VALUE	100
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615
VARIABLE_NAME	INNODB_MASTER_THREAD_DISABLED_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable master thread
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1616
ENUM_VALUE_LIST	OFF,ON
1617 1618
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1619 1620
VARIABLE_NAME	INNODB_MAX_DIRTY_PAGES_PCT
SESSION_VALUE	NULL
1621
GLOBAL_VALUE	75.000000
1622
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1623
DEFAULT_VALUE	75.000000
1624
VARIABLE_SCOPE	GLOBAL
1625
VARIABLE_TYPE	DOUBLE
1626
VARIABLE_COMMENT	Percentage of dirty pages allowed in bufferpool.
1627
NUMERIC_MIN_VALUE	0
1628 1629
NUMERIC_MAX_VALUE	99.999
NUMERIC_BLOCK_SIZE	NULL
1630 1631 1632 1633 1634
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_DIRTY_PAGES_PCT_LWM
SESSION_VALUE	NULL
1635
GLOBAL_VALUE	0.000000
1636
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1637
DEFAULT_VALUE	0.000000
1638
VARIABLE_SCOPE	GLOBAL
1639
VARIABLE_TYPE	DOUBLE
1640 1641
VARIABLE_COMMENT	Percentage of dirty pages at which flushing kicks in.
NUMERIC_MIN_VALUE	0
1642 1643
NUMERIC_MAX_VALUE	99.999
NUMERIC_BLOCK_SIZE	NULL
1644 1645 1646 1647 1648 1649
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_PURGE_LAG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1650
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Desired maximum length of the purge queue (0 = no limit)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_PURGE_LAG_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1664
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1665 1666 1667 1668 1669 1670 1671 1672 1673 1674
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum delay of user threads in micro-seconds
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	10000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1675
VARIABLE_NAME	INNODB_MAX_UNDO_LOG_SIZE
1676
SESSION_VALUE	NULL
1677
GLOBAL_VALUE	1073741824
1678
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1679
DEFAULT_VALUE	1073741824
1680
VARIABLE_SCOPE	GLOBAL
1681 1682 1683 1684
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum size of UNDO tablespace in MB (If UNDO tablespace grows beyond this size it will be truncated in due course). 
NUMERIC_MIN_VALUE	10485760
NUMERIC_MAX_VALUE	18446744073709551615
1685 1686
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_MERGE_THRESHOLD_SET_ALL_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	50
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	50
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Override current MERGE_THRESHOLD setting for all indexes at dictionary cache by the specified value dynamically, at the time.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	50
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
1702 1703 1704 1705
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_DISABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1706
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Turn off a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_ENABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1720
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Turn on a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_RESET
SESSION_VALUE	NULL
GLOBAL_VALUE	
1734
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Reset a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_RESET_ALL
SESSION_VALUE	NULL
GLOBAL_VALUE	
1748
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Reset all values for a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MTFLUSH_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	8
1762
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Number of multi-threaded flush threads
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OLD_BLOCKS_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	37
1776
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
DEFAULT_VALUE	37
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Percentage of the buffer pool to reserve for 'old' blocks.
NUMERIC_MIN_VALUE	5
NUMERIC_MAX_VALUE	95
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OLD_BLOCKS_TIME
SESSION_VALUE	NULL
GLOBAL_VALUE	1000
1790
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
DEFAULT_VALUE	1000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Move blocks to the 'new' end of the buffer pool if the first access was at least this many milliseconds ago. The timeout is disabled if 0.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ONLINE_ALTER_LOG_MAX_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	134217728
1804
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816
DEFAULT_VALUE	134217728
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum modification log file size for online index creation
NUMERIC_MIN_VALUE	65536
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OPEN_FILES
SESSION_VALUE	NULL
1817
GLOBAL_VALUE	300
1818
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	How many files at the maximum InnoDB keeps open at the same time.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OPTIMIZE_FULLTEXT_ONLY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1832
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1833 1834 1835 1836 1837 1838 1839
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Only optimize the Fulltext index of the table
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1840
ENUM_VALUE_LIST	OFF,ON
1841 1842
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856
VARIABLE_NAME	INNODB_PAGE_CLEANERS
SESSION_VALUE	NULL
GLOBAL_VALUE	1
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	4
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Page cleaner threads can be from 1 to 64. Default is 4.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867
VARIABLE_NAME	INNODB_PAGE_CLEANER_DISABLED_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable page cleaner
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1868
ENUM_VALUE_LIST	OFF,ON
1869 1870
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1871 1872 1873
VARIABLE_NAME	INNODB_PAGE_HASH_LOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	16
1874
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887
DEFAULT_VALUE	16
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of rw_locks protecting buffer pool page_hash. Rounded up to the next power of 2
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1024
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PAGE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	16384
1888
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1889 1890 1891 1892 1893 1894 1895 1896 1897 1898
DEFAULT_VALUE	16384
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Page size to use for all InnoDB tablespaces.
NUMERIC_MIN_VALUE	4096
NUMERIC_MAX_VALUE	65536
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909
VARIABLE_NAME	INNODB_PREFIX_INDEX_CLUSTER_OPTIMIZATION
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable prefix optimization to sometimes avoid cluster index lookups.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1910
ENUM_VALUE_LIST	OFF,ON
1911 1912
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1913 1914 1915
VARIABLE_NAME	INNODB_PRINT_ALL_DEADLOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1916
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1917 1918 1919
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
1920
VARIABLE_COMMENT	Print all deadlocks to MariaDB error log (off by default)
1921 1922 1923
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1924
ENUM_VALUE_LIST	OFF,ON
1925 1926 1927 1928 1929
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_BATCH_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	300
1930
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1931 1932 1933 1934 1935 1936 1937 1938 1939 1940
DEFAULT_VALUE	300
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of UNDO log pages to purge in one batch from the history list.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	5000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
VARIABLE_NAME	INNODB_PURGE_RSEG_TRUNCATE_FREQUENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	128
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	128
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Dictates rate at which UNDO records are purged. Value N means purge rollback segment(s) on every Nth iteration of purge invocation
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	128
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1955 1956 1957
VARIABLE_NAME	INNODB_PURGE_RUN_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1958
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1959 1960 1961 1962 1963 1964 1965
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Set purge state to RUN
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1966
ENUM_VALUE_LIST	OFF,ON
1967 1968 1969 1970 1971
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_STOP_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1972
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1973 1974 1975 1976 1977 1978 1979
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Set purge state to STOP
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
1980
ENUM_VALUE_LIST	OFF,ON
1981 1982 1983 1984
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_THREADS
SESSION_VALUE	NULL
1985
GLOBAL_VALUE	4
1986
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1987
DEFAULT_VALUE	4
1988 1989
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
1990
VARIABLE_COMMENT	Purge threads can be from 1 to 32. Default is 4.
1991 1992 1993 1994 1995 1996 1997 1998 1999
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	32
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_RANDOM_READ_AHEAD
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2000
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2001 2002 2003 2004 2005 2006 2007
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to use read ahead for random access within an extent.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2008
ENUM_VALUE_LIST	OFF,ON
2009 2010 2011 2012 2013
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_READ_AHEAD_THRESHOLD
SESSION_VALUE	NULL
GLOBAL_VALUE	56
2014
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
DEFAULT_VALUE	56
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of pages that must be accessed sequentially for InnoDB to trigger a readahead.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_READ_IO_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	2
2028
GLOBAL_VALUE_ORIGIN	CONFIG
2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041
DEFAULT_VALUE	4
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of background read I/O threads in InnoDB.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_READ_ONLY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2042
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2043 2044 2045 2046 2047 2048 2049
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Start InnoDB in read only mode (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2050
ENUM_VALUE_LIST	OFF,ON
2051 2052 2053 2054 2055
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_REPLICATION_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2056
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Replication thread delay (ms) on the slave server if innodb_thread_concurrency is reached (0 by default)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ROLLBACK_ON_TIMEOUT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2070
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2071 2072 2073 2074 2075 2076 2077
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2078
ENUM_VALUE_LIST	OFF,ON
2079 2080 2081 2082 2083
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_ROLLBACK_SEGMENTS
SESSION_VALUE	NULL
GLOBAL_VALUE	128
2084
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097
DEFAULT_VALUE	128
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of undo logs to use (deprecated).
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	128
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SAVED_PAGE_NUMBER_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2098
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2099 2100 2101 2102 2103 2104 2105 2106 2107 2108
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	An InnoDB page number.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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2109 2110 2111 2112 2113 2114 2115
VARIABLE_NAME	INNODB_SCRUB_LOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
2116
VARIABLE_COMMENT	Enable background redo log (ib_logfile0, ib_logfile1...) scrubbing
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2117 2118 2119
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2120
ENUM_VALUE_LIST	OFF,ON
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2121 2122
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
2123
VARIABLE_NAME	INNODB_SCRUB_LOG_SPEED
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2124
SESSION_VALUE	NULL
2125
GLOBAL_VALUE	256
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2126
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2127
DEFAULT_VALUE	256
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2128 2129
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
2130 2131 2132
VARIABLE_COMMENT	Background redo log scrubbing speed in bytes/sec
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	50000
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2133 2134 2135 2136
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150
VARIABLE_NAME	INNODB_SIMULATE_COMP_FAILURES
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Simulate compression failures.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	99
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
2151 2152 2153
VARIABLE_NAME	INNODB_SORT_BUFFER_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1048576
2154
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167
DEFAULT_VALUE	1048576
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Memory buffer size for index creation
NUMERIC_MIN_VALUE	65536
NUMERIC_MAX_VALUE	67108864
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_SPIN_WAIT_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	6
2168
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2169 2170
DEFAULT_VALUE	6
VARIABLE_SCOPE	GLOBAL
2171
VARIABLE_TYPE	INT UNSIGNED
2172 2173
VARIABLE_COMMENT	Maximum delay between polling for a spin lock (6 by default)
NUMERIC_MIN_VALUE	0
2174
NUMERIC_MAX_VALUE	6000
2175 2176 2177 2178 2179 2180 2181
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_AUTO_RECALC
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
2182
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2183 2184 2185 2186 2187 2188 2189
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	InnoDB automatic recalculation of persistent statistics enabled for all tables unless overridden at table level (automatic recalculation is only done when InnoDB decides that the table has changed too much and needs a new statistics)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2190
ENUM_VALUE_LIST	OFF,ON
2191 2192 2193 2194 2195
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_METHOD
SESSION_VALUE	NULL
GLOBAL_VALUE	nulls_equal
2196
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2197 2198 2199 2200 2201 2202 2203 2204 2205 2206
DEFAULT_VALUE	nulls_equal
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	Specifies how InnoDB index statistics collection code should treat NULLs. Possible values are NULLS_EQUAL (default), NULLS_UNEQUAL and NULLS_IGNORED
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	nulls_equal,nulls_unequal,nulls_ignored
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220
VARIABLE_NAME	INNODB_STATS_MODIFIED_COUNTER
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The number of rows modified before we calculate new statistics (default 0 = current limits)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2221 2222 2223
VARIABLE_NAME	INNODB_STATS_ON_METADATA
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2224
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2225 2226 2227 2228 2229 2230 2231
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable statistics gathering for metadata commands such as SHOW TABLE STATUS for tables that use transient statistics (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2232
ENUM_VALUE_LIST	OFF,ON
2233 2234 2235 2236 2237
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_PERSISTENT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2238
GLOBAL_VALUE_ORIGIN	CONFIG
2239 2240 2241 2242 2243 2244 2245
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	InnoDB persistent statistics enabled for all tables unless overridden at table level
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2246
ENUM_VALUE_LIST	OFF,ON
2247 2248 2249 2250 2251
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_PERSISTENT_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	20
2252
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265
DEFAULT_VALUE	20
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The number of leaf index pages to sample when calculating persistent statistics (by ANALYZE, default 20)
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_STATS_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	8
2266
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2267 2268 2269 2270 2271 2272 2273 2274 2275 2276
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Deprecated, use innodb_stats_transient_sample_pages instead
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287
VARIABLE_NAME	INNODB_STATS_TRADITIONAL
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable traditional statistic calculation based on number of configured pages (default true)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2288
ENUM_VALUE_LIST	OFF,ON
2289 2290
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2291 2292 2293
VARIABLE_NAME	INNODB_STATS_TRANSIENT_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	8
2294
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The number of leaf index pages to sample when calculating transient statistics (if persistent statistics are not used, default 8)
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_STATUS_OUTPUT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2308
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2309 2310 2311 2312 2313 2314 2315
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB monitor output to the error log.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2316
ENUM_VALUE_LIST	OFF,ON
2317 2318 2319 2320 2321
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATUS_OUTPUT_LOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2322
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2323 2324 2325 2326 2327 2328 2329
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB lock monitor output to the error log. Requires innodb_status_output=ON.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2330
ENUM_VALUE_LIST	OFF,ON
2331 2332 2333
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STRICT_MODE
2334 2335
SESSION_VALUE	ON
GLOBAL_VALUE	ON
2336
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2337
DEFAULT_VALUE	ON
2338 2339 2340 2341 2342 2343
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use strict mode when evaluating create options.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2344
ENUM_VALUE_LIST	OFF,ON
2345 2346 2347 2348 2349
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SUPPORT_XA
SESSION_VALUE	ON
GLOBAL_VALUE	ON
2350
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2351 2352 2353 2354 2355 2356 2357
DEFAULT_VALUE	ON
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB support for the XA two-phase commit
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2358
ENUM_VALUE_LIST	OFF,ON
2359 2360 2361 2362 2363
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SYNC_ARRAY_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1
2364
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2365 2366 2367 2368 2369 2370 2371 2372 2373 2374
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Size of the mutex/lock wait array.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1024
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385
VARIABLE_NAME	INNODB_SYNC_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable the sync debug checks
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2386
ENUM_VALUE_LIST	OFF,ON
2387 2388
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
2389 2390 2391
VARIABLE_NAME	INNODB_SYNC_SPIN_LOOPS
SESSION_VALUE	NULL
GLOBAL_VALUE	30
2392
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405
DEFAULT_VALUE	30
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Count of spin-loop rounds in InnoDB mutexes (30 by default)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_TABLE_LOCKS
SESSION_VALUE	ON
GLOBAL_VALUE	ON
2406
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2407 2408 2409 2410 2411 2412 2413
DEFAULT_VALUE	ON
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB locking in LOCK TABLES
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2414
ENUM_VALUE_LIST	OFF,ON
2415 2416
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430
VARIABLE_NAME	INNODB_TEMP_DATA_FILE_PATH
SESSION_VALUE	NULL
GLOBAL_VALUE	ibtmp1:12M:autoextend
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Path to files and their sizes making temp-tablespace.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
2431 2432 2433
VARIABLE_NAME	INNODB_THREAD_CONCURRENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2434
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_THREAD_SLEEP_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	10000
2448
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2449 2450 2451 2452 2453 2454 2455 2456 2457 2458
DEFAULT_VALUE	10000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0 disable a sleep
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
VARIABLE_NAME	INNODB_TMPDIR
SESSION_VALUE	
GLOBAL_VALUE	
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Directory for temporary non-tablespace files.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
2473 2474 2475
VARIABLE_NAME	INNODB_TRX_PURGE_VIEW_UPDATE_ONLY_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2476
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2477 2478 2479 2480 2481 2482 2483
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Pause actual purging any delete-marked records, but merely update the purge view. It is to create artificially the situation the purge view have been updated but the each purges were not done yet.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2484
ENUM_VALUE_LIST	OFF,ON
2485 2486 2487 2488 2489
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NULL
VARIABLE_NAME	INNODB_TRX_RSEG_N_SLOTS_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2490
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Debug flags for InnoDB to limit TRX_RSEG_N_SLOTS for trx_rsegf_undo_find_free()
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1024
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NULL
VARIABLE_NAME	INNODB_UNDO_DIRECTORY
SESSION_VALUE	NULL
2503
GLOBAL_VALUE	PATH
2504
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2505
DEFAULT_VALUE	
2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Directory where undo tablespace files live, this path can be absolute.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_UNDO_LOGS
SESSION_VALUE	NULL
GLOBAL_VALUE	128
2518
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2519 2520 2521 2522 2523 2524 2525 2526 2527 2528
DEFAULT_VALUE	128
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of undo logs to use.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	128
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539
VARIABLE_NAME	INNODB_UNDO_LOG_TRUNCATE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable or Disable Truncate of UNDO tablespace.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2540
ENUM_VALUE_LIST	OFF,ON
2541 2542
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
2543 2544 2545
VARIABLE_NAME	INNODB_UNDO_TABLESPACES
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2546
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2547 2548 2549 2550 2551
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of undo tablespaces to use. 
NUMERIC_MIN_VALUE	0
2552
NUMERIC_MAX_VALUE	95
2553 2554 2555 2556 2557 2558
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_USE_ATOMIC_WRITES
SESSION_VALUE	NULL
2559
GLOBAL_VALUE	ON
2560
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2561
DEFAULT_VALUE	ON
2562 2563
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
2564
VARIABLE_COMMENT	Enable atomic writes, instead of using the doublewrite buffer, for files on devices that supports atomic writes. To use this option one must use file_per_table=1, flush_method=O_DIRECT and use_fallocate=1. This option only works on Linux with either FusionIO cards using the directFS filesystem or with Shannon cards using any file system.
2565 2566 2567
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2568
ENUM_VALUE_LIST	OFF,ON
2569 2570
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584
VARIABLE_NAME	INNODB_USE_FALLOCATE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use posix_fallocate() to allocate files. DEPRECATED, has no effect.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	OFF,ON
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
2585 2586 2587
VARIABLE_NAME	INNODB_USE_MTFLUSH
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2588
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2589 2590 2591 2592 2593 2594 2595
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use multi-threaded flush. Default FALSE.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2596
ENUM_VALUE_LIST	OFF,ON
2597 2598 2599 2600
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_USE_TRIM
SESSION_VALUE	NULL
2601
GLOBAL_VALUE	ON
2602
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2603
DEFAULT_VALUE	ON
2604 2605
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
2606
VARIABLE_COMMENT	Deallocate (punch_hole|trim) unused portions of the page compressed page (on by default)
2607 2608 2609
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
2610
ENUM_VALUE_LIST	OFF,ON
2611 2612 2613 2614
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_VERSION
SESSION_VALUE	NULL
2615
GLOBAL_VALUE	5.7.14
2616
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629
DEFAULT_VALUE	NULL
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	InnoDB version
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NULL
VARIABLE_NAME	INNODB_WRITE_IO_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	2
2630
GLOBAL_VALUE_ORIGIN	CONFIG
2631 2632 2633 2634 2635 2636 2637 2638 2639 2640
DEFAULT_VALUE	4
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of background write I/O threads in InnoDB.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED