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mariadb/mysql-test/suite/innodb/r/innodb_skip_innodb_is_tables.result
Marko Mäkelä 685d958e38 MDEV-14425 Improve the redo log for concurrency 
The InnoDB redo log used to be formatted in blocks of 512 bytes.
The log blocks were encrypted and the checksum was calculated while
holding log_sys.mutex, creating a serious scalability bottleneck.

We remove the fixed-size redo log block structure altogether and
essentially turn every mini-transaction into a log block of its own.
This allows encryption and checksum calculations to be performed
on local mtr_t::m_log buffers, before acquiring log_sys.mutex.
The mutex only protects a memcpy() of the data to the shared
log_sys.buf, as well as the padding of the log, in case the
to-be-written part of the log would not end in a block boundary of
the underlying storage. For now, the "padding" consists of writing
a single NUL byte, to allow recovery and mariadb-backup to detect
the end of the circular log faster.

Like the previous implementation, we will overwrite the last log block
over and over again, until it has been completely filled. It would be
possible to write only up to the last completed block (if no more
recent write was requested), or to write dummy FILE_CHECKPOINT records
to fill the incomplete block, by invoking the currently disabled
function log_pad(). This would require adjustments to some logic around
log checkpoints, page flushing, and shutdown.

An upgrade after a crash of any previous version is not supported.
Logically empty log files from a previous version will be upgraded.

An attempt to start up InnoDB without a valid ib_logfile0 will be
refused. Previously, the redo log used to be created automatically
if it was missing. Only with with innodb_force_recovery=6, it is
possible to start InnoDB in read-only mode even if the log file
does not exist. This allows the contents of a possibly corrupted
database to be dumped.

Because a prepared backup from an earlier version of mariadb-backup
will create a 0-sized log file, we will allow an upgrade from such
log files, provided that the FIL_PAGE_FILE_FLUSH_LSN in the system
tablespace looks valid.

The 512-byte log checkpoint blocks at 0x200 and 0x600 will be replaced
with 64-byte log checkpoint blocks at 0x1000 and 0x2000.

The start of log records will move from 0x800 to 0x3000. This allows us
to use 4096-byte aligned blocks for all I/O in a future revision.

We extend the MDEV-12353 redo log record format as follows.

(1) Empty mini-transactions or extra NUL bytes will not be allowed.
(2) The end-of-minitransaction marker (a NUL byte) will be replaced
with a 1-bit sequence number, which will be toggled each time when the
circular log file wraps back to the beginning.
(3) After the sequence bit, a CRC-32C checksum of all data
(excluding the sequence bit) will written.
(4) If the log is encrypted, 8 bytes will be written before
the checksum and included in it. This is part of the
initialization vector (IV) of encrypted log data.
(5) File names, page numbers, and checkpoint information will not be
encrypted. Only the payload bytes of page-level log will be encrypted.
The tablespace ID and page number will form part of the IV.
(6) For padding, arbitrary-length FILE_CHECKPOINT records may be written,
with all-zero payload, and with the normal end marker and checksum.
The minimum size is 7 bytes, or 7+8 with innodb_encrypt_log=ON.

In mariadb-backup and in Galera snapshot transfer (SST) scripts, we will
no longer remove ib_logfile0 or create an empty ib_logfile0. Server startup
will require a valid log file. When resizing the log, we will create
a logically empty ib_logfile101 at the current LSN and use an atomic rename
to replace ib_logfile0 with it. See the test innodb.log_file_size.

Because there is no mandatory padding in the log file, we are able
to create a dummy log file as of an arbitrary log sequence number.
See the test mariabackup.huge_lsn.

The parameter innodb_log_write_ahead_size and the
INFORMATION_SCHEMA.INNODB_METRICS counter log_padded will be removed.

The minimum value of innodb_log_buffer_size will be increased to 2MiB
(because log_sys.buf will replace recv_sys.buf) and the increment
adjusted to 4096 bytes (the maximum log block size).

The following INFORMATION_SCHEMA.INNODB_METRICS counters will be removed:

os_log_fsyncs
os_log_pending_fsyncs
log_pending_log_flushes
log_pending_checkpoint_writes

The following status variables will be removed:

Innodb_os_log_fsyncs (this is included in Innodb_data_fsyncs)
Innodb_os_log_pending_fsyncs (this was limited to at most 1 by design)

log_sys.get_block_size(): Return the physical block size of the log file.
This is only implemented on Linux and Microsoft Windows for now, and for
the power-of-2 block sizes between 64 and 4096 bytes (the minimum and
maximum size of a checkpoint block). If the block size is anything else,
the traditional 512-byte size will be used via normal file system
buffering.

If the file system buffers can be bypassed, a message like the following
will be issued:

InnoDB: File system buffers for log disabled (block size=512 bytes)
InnoDB: File system buffers for log disabled (block size=4096 bytes)

This has been tested on Linux and Microsoft Windows with both sizes.

On Linux, only enable O_DIRECT on the log for innodb_flush_method=O_DSYNC.
Tests in 3 different environments where the log is stored in a device
with a physical block size of 512 bytes are yielding better throughput
without O_DIRECT. This could be due to the fact that in the event the
last log block is being overwritten (if multiple transactions would
become durable at the same time, and each of will write a small
number of bytes to the last log block), it should be faster to re-copy
data from log_sys.buf or log_sys.flush_buf to the kernel buffer,
to be finally written at fdatasync() time.

The parameter innodb_flush_method=O_DSYNC will imply O_DIRECT for
data files. This option will enable O_DIRECT on the log file on Linux.
It may be unsafe to use when the storage device does not support
FUA (Force Unit Access) mode.

When the server is compiled WITH_PMEM=ON, we will use memory-mapped
I/O for the log file if the log resides on a "mount -o dax" device.
We will identify PMEM in a start-up message:

InnoDB: log sequence number 0 (memory-mapped); transaction id 3

On Linux, we will also invoke mmap() on any ib_logfile0 that resides
in /dev/shm, effectively treating the log file as persistent memory.
This should speed up "./mtr --mem" and increase the test coverage of
PMEM on non-PMEM hardware. It also allows users to estimate how much
the performance would be improved by installing persistent memory.
On other tmpfs file systems such as /run, we will not use mmap().

mariadb-backup: Eliminated several variables. We will refer
directly to recv_sys and log_sys.

backup_wait_for_lsn(): Detect non-progress of
xtrabackup_copy_logfile(). In this new log format with
arbitrary-sized blocks, we can only detect log file overrun
indirectly, by observing that the scanned log sequence number
is not advancing.

xtrabackup_copy_logfile(): On PMEM, do not modify the sequence bit,
because we are not allowed to modify the server's log file, and our
memory mapping is read-only.

trx_flush_log_if_needed_low(): Do not use the callback on pmem.
Using neither flush_lock nor write_lock around PMEM writes seems
to yield the best performance. The pmem_persist() calls may
still be somewhat slower than the pwrite() and fdatasync() based
interface (PMEM mounted without -o dax).

recv_sys_t::buf: Remove. We will use log_sys.buf for parsing.

recv_sys_t::MTR_SIZE_MAX: Replaces RECV_SCAN_SIZE.

recv_sys_t::file_checkpoint: Renamed from mlog_checkpoint_lsn.

recv_sys_t, log_sys_t: Removed many data members.

recv_sys.lsn: Renamed from recv_sys.recovered_lsn.
recv_sys.offset: Renamed from recv_sys.recovered_offset.
log_sys.buf_size: Replaces srv_log_buffer_size.

recv_buf: A smart pointer that wraps log_sys.buf[recv_sys.offset]
when the buffer is being allocated from the memory heap.

recv_ring: A smart pointer that wraps a circular log_sys.buf[] that is
backed by ib_logfile0. The pointer will wrap from recv_sys.len
(log_sys.file_size) to log_sys.START_OFFSET. For the record that
wraps around, we may copy file name or record payload data to
the auxiliary buffer decrypt_buf in order to have a contiguous
block of memory. The maximum size of a record is less than
innodb_page_size bytes.

recv_sys_t::parse(): Take the smart pointer as a template parameter.
Do not temporarily add a trailing NUL byte to FILE_ records, because
we are not supposed to modify the memory-mapped log file. (It is
attached in read-write mode already during recovery.)

recv_sys_t::parse_mtr(): Wrapper for recv_sys_t::parse().

recv_sys_t::parse_pmem(): Like parse_mtr(), but if PREMATURE_EOF would be
returned on PMEM, use recv_ring to wrap around the buffer to the start.

mtr_t::finish_write(), log_close(): Do not enforce log_sys.max_buf_free
on PMEM, because it has no meaning on the mmap-based log.

log_sys.write_to_buf: Count writes to log_sys.buf. Replaces
srv_stats.log_write_requests and export_vars.innodb_log_write_requests.
Protected by log_sys.mutex. Updated consistently in log_close().
Previously, mtr_t::commit() conditionally updated the count,
which was inconsistent.

log_sys.write_to_log: Count swaps of log_sys.buf and log_sys.flush_buf,
for writing to log_sys.log (the ib_logfile0). Replaces
srv_stats.log_writes and export_vars.innodb_log_writes.
Protected by log_sys.mutex.

log_sys.waits: Count waits in append_prepare(). Replaces
srv_stats.log_waits and export_vars.innodb_log_waits.

recv_recover_page(): Do not unnecessarily acquire
log_sys.flush_order_mutex. We are inserting the blocks in arbitary
order anyway, to be adjusted in recv_sys.apply(true).

We will change the definition of flush_lock and write_lock to
avoid potential false sharing. Depending on sizeof(log_sys) and
CPU_LEVEL1_DCACHE_LINESIZE, the flush_lock and write_lock could
share a cache line with each other or with the last data members
of log_sys.

Thanks to Matthias Leich for providing https://rr-project.org traces
for various failures during the development, and to
Thirunarayanan Balathandayuthapani for his help in debugging
some of the recovery code. And thanks to the developers of the
rr debugger for a tool without which extensive changes to InnoDB
would be very challenging to get right.

Thanks to Vladislav Vaintroub for useful feedback and
to him, Axel Schwenke and Krunal Bauskar for testing the performance.
2022-01-21 16:03:47 +02:00

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select * from information_schema.innodb_trx;
trx_id trx_state trx_started trx_requested_lock_id trx_wait_started trx_weight trx_mysql_thread_id trx_query trx_operation_state trx_tables_in_use trx_tables_locked trx_lock_structs trx_lock_memory_bytes trx_rows_locked trx_rows_modified trx_concurrency_tickets trx_isolation_level trx_unique_checks trx_foreign_key_checks trx_last_foreign_key_error trx_is_read_only trx_autocommit_non_locking
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_trx but the InnoDB storage engine is not installed
select * from information_schema.innodb_locks;
lock_id lock_trx_id lock_mode lock_type lock_table lock_index lock_space lock_page lock_rec lock_data
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_locks but the InnoDB storage engine is not installed
select * from information_schema.innodb_lock_waits;
requesting_trx_id requested_lock_id blocking_trx_id blocking_lock_id
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_lock_waits but the InnoDB storage engine is not installed
select * from information_schema.innodb_cmp;
page_size compress_ops compress_ops_ok compress_time uncompress_ops uncompress_time
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_cmp but the InnoDB storage engine is not installed
select * from information_schema.innodb_cmp_reset;
page_size compress_ops compress_ops_ok compress_time uncompress_ops uncompress_time
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_cmp_reset but the InnoDB storage engine is not installed
select * from information_schema.innodb_cmp_per_index;
database_name table_name index_name compress_ops compress_ops_ok compress_time uncompress_ops uncompress_time
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_cmp_per_index but the InnoDB storage engine is not installed
select * from information_schema.innodb_cmp_per_index_reset;
database_name table_name index_name compress_ops compress_ops_ok compress_time uncompress_ops uncompress_time
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_cmp_per_index_reset but the InnoDB storage engine is not installed
select * from information_schema.innodb_cmpmem;
page_size buffer_pool_instance pages_used pages_free relocation_ops relocation_time
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_cmpmem but the InnoDB storage engine is not installed
select * from information_schema.innodb_cmpmem_reset;
page_size buffer_pool_instance pages_used pages_free relocation_ops relocation_time
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_cmpmem_reset but the InnoDB storage engine is not installed
select * from information_schema.innodb_metrics;
NAME SUBSYSTEM COUNT MAX_COUNT MIN_COUNT AVG_COUNT COUNT_RESET MAX_COUNT_RESET MIN_COUNT_RESET AVG_COUNT_RESET TIME_ENABLED TIME_DISABLED TIME_ELAPSED TIME_RESET ENABLED TYPE COMMENT
metadata_table_handles_opened metadata 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of table handles opened
lock_deadlocks lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of deadlocks
lock_timeouts lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of lock timeouts
lock_rec_lock_waits lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times enqueued into record lock wait queue
lock_table_lock_waits lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times enqueued into table lock wait queue
lock_rec_lock_requests lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of record locks requested
lock_rec_lock_created lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of record locks created
lock_rec_lock_removed lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of record locks removed from the lock queue
lock_rec_locks lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Current number of record locks on tables
lock_table_lock_created lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of table locks created
lock_table_lock_removed lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of table locks removed from the lock queue
lock_table_locks lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Current number of table locks on tables
lock_row_lock_current_waits lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of row locks currently being waited for (innodb_row_lock_current_waits)
lock_row_lock_time lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Time spent in acquiring row locks, in milliseconds (innodb_row_lock_time)
lock_row_lock_time_max lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value The maximum time to acquire a row lock, in milliseconds (innodb_row_lock_time_max)
lock_row_lock_waits lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of times a row lock had to be waited for (innodb_row_lock_waits)
lock_row_lock_time_avg lock 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value The average time to acquire a row lock, in milliseconds (innodb_row_lock_time_avg)
buffer_pool_size server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Server buffer pool size (all buffer pools) in bytes
buffer_pool_reads buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of reads directly from disk (innodb_buffer_pool_reads)
buffer_pool_read_requests buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of logical read requests (innodb_buffer_pool_read_requests)
buffer_pool_write_requests buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of write requests (innodb_buffer_pool_write_requests)
buffer_pool_wait_free buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of times waited for free buffer (innodb_buffer_pool_wait_free)
buffer_pool_read_ahead buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages read as read ahead (innodb_buffer_pool_read_ahead)
buffer_pool_read_ahead_evicted buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Read-ahead pages evicted without being accessed (innodb_buffer_pool_read_ahead_evicted)
buffer_pool_pages_total buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Total buffer pool size in pages (innodb_buffer_pool_pages_total)
buffer_pool_pages_misc buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Buffer pages for misc use such as row locks or the adaptive hash index (innodb_buffer_pool_pages_misc)
buffer_pool_pages_data buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Buffer pages containing data (innodb_buffer_pool_pages_data)
buffer_pool_bytes_data buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Buffer bytes containing data (innodb_buffer_pool_bytes_data)
buffer_pool_pages_dirty buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Buffer pages currently dirty (innodb_buffer_pool_pages_dirty)
buffer_pool_bytes_dirty buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Buffer bytes currently dirty (innodb_buffer_pool_bytes_dirty)
buffer_pool_pages_free buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Buffer pages currently free (innodb_buffer_pool_pages_free)
buffer_pages_created buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages created (innodb_pages_created)
buffer_pages_written buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages written (innodb_pages_written)
buffer_index_pages_written buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of index pages written (innodb_index_pages_written)
buffer_non_index_pages_written buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of non index pages written (innodb_non_index_pages_written)
buffer_pages_read buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages read (innodb_pages_read)
buffer_index_sec_rec_cluster_reads buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of secondary record reads triggered cluster read
buffer_index_sec_rec_cluster_reads_avoided buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of secondary record reads avoided triggering cluster read
buffer_data_reads buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Amount of data read in bytes (innodb_data_reads)
buffer_data_written buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Amount of data written in bytes (innodb_data_written)
buffer_flush_batch_scanned buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages scanned as part of flush batch
buffer_flush_batch_num_scan buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of times buffer flush list flush is called
buffer_flush_batch_scanned_per_call buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages scanned per flush batch scan
buffer_flush_batch_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages flushed as part of flush batch
buffer_flush_batches buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of flush batches
buffer_flush_batch_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages queued as a flush batch
buffer_flush_neighbor_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total neighbors flushed as part of neighbor flush
buffer_flush_neighbor buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of times neighbors flushing is invoked
buffer_flush_neighbor_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages queued as a neighbor batch
buffer_flush_n_to_flush_requested buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages requested for flushing.
buffer_flush_n_to_flush_by_age buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages target by LSN Age for flushing.
buffer_flush_adaptive_avg_time buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Avg time (ms) spent for adaptive flushing recently.
buffer_flush_adaptive_avg_pass buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of adaptive flushes passed during the recent Avg period.
buffer_LRU_get_free_loops buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Total loops in LRU get free.
buffer_LRU_get_free_waits buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Total sleep waits in LRU get free.
buffer_flush_avg_page_rate buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Average number of pages at which flushing is happening
buffer_flush_lsn_avg_rate buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Average redo generation rate
buffer_flush_pct_for_dirty buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Percent of IO capacity used to avoid max dirty page limit
buffer_flush_pct_for_lsn buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Percent of IO capacity used to avoid reusable redo space limit
buffer_flush_sync_waits buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times a wait happens due to sync flushing
buffer_flush_adaptive_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages flushed as part of adaptive flushing
buffer_flush_adaptive buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of adaptive batches
buffer_flush_adaptive_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages queued as an adaptive batch
buffer_flush_sync_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages flushed as part of sync batches
buffer_flush_sync buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of sync batches
buffer_flush_sync_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages queued as a sync batch
buffer_flush_background_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages flushed as part of background batches
buffer_flush_background buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of background batches
buffer_flush_background_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages queued as a background batch
buffer_LRU_batch_scanned buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages scanned as part of LRU batch
buffer_LRU_batch_num_scan buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of times LRU batch is called
buffer_LRU_batch_scanned_per_call buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Pages scanned per LRU batch call
buffer_LRU_batch_flush_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Total pages flushed as part of LRU batches
buffer_LRU_batch_evict_total_pages buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Total pages evicted as part of LRU batches
buffer_LRU_single_flush_failure_count Buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times attempt to flush a single page from LRU failed
buffer_LRU_get_free_search Buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of searches performed for a clean page
buffer_LRU_search_scanned buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages scanned as part of LRU search
buffer_LRU_search_num_scan buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of times LRU search is performed
buffer_LRU_search_scanned_per_call buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Page scanned per single LRU search
buffer_LRU_unzip_search_scanned buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages scanned as part of LRU unzip search
buffer_LRU_unzip_search_num_scan buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Number of times LRU unzip search is performed
buffer_LRU_unzip_search_scanned_per_call buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_member Page scanned per single LRU unzip search
buffer_page_read_index_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Index Leaf Pages read
buffer_page_read_index_non_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Index Non-leaf Pages read
buffer_page_read_index_ibuf_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Index Leaf Pages read
buffer_page_read_index_ibuf_non_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Index Non-Leaf Pages read
buffer_page_read_undo_log buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Undo Log Pages read
buffer_page_read_index_inode buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Index Inode Pages read
buffer_page_read_ibuf_free_list buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Free List Pages read
buffer_page_read_ibuf_bitmap buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Bitmap Pages read
buffer_page_read_system_page buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of System Pages read
buffer_page_read_trx_system buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Transaction System Pages read
buffer_page_read_fsp_hdr buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of File Space Header Pages read
buffer_page_read_xdes buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Extent Descriptor Pages read
buffer_page_read_blob buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Uncompressed BLOB Pages read
buffer_page_read_zblob buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of First Compressed BLOB Pages read
buffer_page_read_zblob2 buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Subsequent Compressed BLOB Pages read
buffer_page_read_other buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of other/unknown (old version of InnoDB) Pages read
buffer_page_written_index_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Index Leaf Pages written
buffer_page_written_index_non_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Index Non-leaf Pages written
buffer_page_written_index_ibuf_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Index Leaf Pages written
buffer_page_written_index_ibuf_non_leaf buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Index Non-Leaf Pages written
buffer_page_written_undo_log buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Undo Log Pages written
buffer_page_written_index_inode buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Index Inode Pages written
buffer_page_written_ibuf_free_list buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Free List Pages written
buffer_page_written_ibuf_bitmap buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Insert Buffer Bitmap Pages written
buffer_page_written_system_page buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of System Pages written
buffer_page_written_trx_system buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Transaction System Pages written
buffer_page_written_fsp_hdr buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of File Space Header Pages written
buffer_page_written_xdes buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Extent Descriptor Pages written
buffer_page_written_blob buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Uncompressed BLOB Pages written
buffer_page_written_zblob buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of First Compressed BLOB Pages written
buffer_page_written_zblob2 buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Subsequent Compressed BLOB Pages written
buffer_page_written_other buffer_page_io 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of other/unknown (old version InnoDB) Pages written
os_data_reads os 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of reads initiated (innodb_data_reads)
os_data_writes os 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of writes initiated (innodb_data_writes)
os_data_fsyncs os 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of fsync() calls (innodb_data_fsyncs)
os_pending_reads os 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of reads pending
os_pending_writes os 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of writes pending
os_log_bytes_written os 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Bytes of log written (innodb_os_log_written)
trx_rw_commits transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of read-write transactions committed
trx_ro_commits transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of read-only transactions committed
trx_nl_ro_commits transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of non-locking auto-commit read-only transactions committed
trx_commits_insert_update transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of transactions committed with inserts and updates
trx_rollbacks transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of transactions rolled back
trx_rollbacks_savepoint transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of transactions rolled back to savepoint
trx_rseg_history_len transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Length of the TRX_RSEG_HISTORY list
trx_undo_slots_used transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of undo slots used
trx_undo_slots_cached transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of undo slots cached
trx_rseg_current_size transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Current rollback segment size in pages
purge_del_mark_records purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of delete-marked rows purged
purge_upd_exist_or_extern_records purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of purges on updates of existing records and updates on delete marked record with externally stored field
purge_invoked purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times purge was invoked
purge_undo_log_pages purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of undo log pages handled by the purge
purge_dml_delay_usec purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Microseconds DML to be delayed due to purge lagging
purge_stop_count purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of times purge was stopped
purge_resume_count purge 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of times purge was resumed
log_checkpoints recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of checkpoints
log_lsn_last_flush recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value LSN of Last flush
log_lsn_last_checkpoint recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value LSN at last checkpoint
log_lsn_current recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Current LSN value
log_lsn_checkpoint_age recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Current LSN value minus LSN at last checkpoint
log_lsn_buf_pool_oldest recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value The oldest modified block LSN in the buffer pool
log_max_modified_age_async recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Maximum LSN difference; when exceeded, start asynchronous preflush
log_num_log_io recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of log I/Os
log_waits recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of log waits due to small log buffer (innodb_log_waits)
log_write_requests recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of log write requests (innodb_log_write_requests)
log_writes recovery 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of log writes (innodb_log_writes)
compress_pages_compressed compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages compressed
compress_pages_decompressed compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages decompressed
compression_pad_increments compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times padding is incremented to avoid compression failures
compression_pad_decrements compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times padding is decremented due to good compressibility
compress_saved compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of bytes saved by page compression
compress_pages_page_compressed compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages compressed by page compression
compress_page_compressed_trim_op compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of TRIM operation performed by page compression
compress_pages_page_decompressed compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages decompressed by page compression
compress_pages_page_compression_error compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of page compression errors
compress_pages_encrypted compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages encrypted
compress_pages_decrypted compression 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of pages decrypted
index_page_splits index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of index page splits
index_page_merge_attempts index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of index page merge attempts
index_page_merge_successful index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of successful index page merges
index_page_reorg_attempts index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of index page reorganization attempts
index_page_reorg_successful index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of successful index page reorganizations
index_page_discards index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of index pages discarded
adaptive_hash_searches adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of successful searches using Adaptive Hash Index
adaptive_hash_searches_btree adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of searches using B-tree on an index search
adaptive_hash_pages_added adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of index pages on which the Adaptive Hash Index is built
adaptive_hash_pages_removed adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of index pages whose corresponding Adaptive Hash Index entries were removed
adaptive_hash_rows_added adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Adaptive Hash Index rows added
adaptive_hash_rows_removed adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Adaptive Hash Index rows removed
adaptive_hash_rows_deleted_no_hash_entry adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of rows deleted that did not have corresponding Adaptive Hash Index entries
adaptive_hash_rows_updated adaptive_hash_index 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of Adaptive Hash Index rows updated
file_num_open_files file_system 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Number of files currently open (innodb_num_open_files)
ibuf_merges_insert change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of inserted records merged by change buffering
ibuf_merges_delete_mark change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of deleted records merged by change buffering
ibuf_merges_delete change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of purge records merged by change buffering
ibuf_merges_discard_insert change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of insert merged operations discarded
ibuf_merges_discard_delete_mark change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of deleted merged operations discarded
ibuf_merges_discard_delete change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of purge merged operations discarded
ibuf_merges change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of change buffer merges
ibuf_size change_buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Change buffer size in pages
innodb_master_thread_sleeps server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times (seconds) master thread sleeps
innodb_activity_count server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Current server activity count
innodb_master_active_loops server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times master thread performs its tasks when server is active
innodb_master_idle_loops server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of times master thread performs its tasks when server is idle
innodb_log_flush_usec server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Time (in microseconds) spent to flush log records
innodb_dict_lru_usec server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Time (in microseconds) spent to process DICT LRU list
innodb_dict_lru_count_active server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of tables evicted from DICT LRU list in the active loop
innodb_dict_lru_count_idle server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of tables evicted from DICT LRU list in the idle loop
innodb_dblwr_writes server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of doublewrite operations that have been performed (innodb_dblwr_writes)
innodb_dblwr_pages_written server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages that have been written for doublewrite operations (innodb_dblwr_pages_written)
innodb_page_size server 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value InnoDB page size in bytes (innodb_page_size)
dml_reads dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of rows read
dml_inserts dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of rows inserted
dml_deletes dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of rows deleted
dml_updates dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of rows updated
dml_system_reads dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of system rows read
dml_system_inserts dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of system rows inserted
dml_system_deletes dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of system rows deleted
dml_system_updates dml 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of system rows updated
ddl_background_drop_indexes ddl 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of indexes waiting to be dropped after failed index creation
ddl_online_create_index ddl 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of indexes being created online
ddl_pending_alter_table ddl 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of ALTER TABLE, CREATE INDEX, DROP INDEX in progress
ddl_sort_file_alter_table ddl 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of sort files created during alter table
ddl_log_file_alter_table ddl 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of log files created during alter table
icp_attempts icp 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of attempts for index push-down condition checks
icp_no_match icp 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Index push-down condition does not match
icp_out_of_range icp 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Index push-down condition out of range
icp_match icp 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Index push-down condition matches
select * from information_schema.innodb_ft_default_stopword;
value
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select * from information_schema.innodb_ft_deleted;
DOC_ID
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_ft_deleted but the InnoDB storage engine is not installed
select * from information_schema.innodb_ft_being_deleted;
DOC_ID
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_ft_being_deleted but the InnoDB storage engine is not installed
select * from information_schema.innodb_ft_index_cache;
WORD FIRST_DOC_ID LAST_DOC_ID DOC_COUNT DOC_ID POSITION
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_ft_index_cache but the InnoDB storage engine is not installed
select * from information_schema.innodb_ft_index_table;
WORD FIRST_DOC_ID LAST_DOC_ID DOC_COUNT DOC_ID POSITION
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_ft_index_table but the InnoDB storage engine is not installed
select * from information_schema.innodb_ft_config;
KEY VALUE
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_ft_config but the InnoDB storage engine is not installed
select * from information_schema.innodb_buffer_page;
POOL_ID BLOCK_ID SPACE PAGE_NUMBER PAGE_TYPE FLUSH_TYPE FIX_COUNT IS_HASHED NEWEST_MODIFICATION OLDEST_MODIFICATION ACCESS_TIME TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE COMPRESSED_SIZE PAGE_STATE IO_FIX IS_OLD FREE_PAGE_CLOCK
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_buffer_page but the InnoDB storage engine is not installed
select * from information_schema.innodb_buffer_page_lru;
POOL_ID LRU_POSITION SPACE PAGE_NUMBER PAGE_TYPE FLUSH_TYPE FIX_COUNT IS_HASHED NEWEST_MODIFICATION OLDEST_MODIFICATION ACCESS_TIME TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE COMPRESSED_SIZE COMPRESSED IO_FIX IS_OLD FREE_PAGE_CLOCK
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_buffer_page_lru but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_tables;
TABLE_ID NAME FLAG N_COLS SPACE ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_tables but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_tablestats;
TABLE_ID NAME STATS_INITIALIZED NUM_ROWS CLUST_INDEX_SIZE OTHER_INDEX_SIZE MODIFIED_COUNTER AUTOINC REF_COUNT
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_tablestats but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_indexes;
INDEX_ID NAME TABLE_ID TYPE N_FIELDS PAGE_NO SPACE MERGE_THRESHOLD
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_indexes but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_columns;
TABLE_ID NAME POS MTYPE PRTYPE LEN
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_columns but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_fields;
INDEX_ID NAME POS
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_fields but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_foreign;
ID FOR_NAME REF_NAME N_COLS TYPE
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_foreign but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_foreign_cols;
ID FOR_COL_NAME REF_COL_NAME POS
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_foreign_cols but the InnoDB storage engine is not installed
select * from information_schema.innodb_sys_tablespaces;
SPACE NAME FLAG ROW_FORMAT PAGE_SIZE FILENAME FS_BLOCK_SIZE FILE_SIZE ALLOCATED_SIZE
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_sys_tablespaces but the InnoDB storage engine is not installed
select * from information_schema.innodb_tablespaces_encryption;
SPACE NAME ENCRYPTION_SCHEME KEYSERVER_REQUESTS MIN_KEY_VERSION CURRENT_KEY_VERSION KEY_ROTATION_PAGE_NUMBER KEY_ROTATION_MAX_PAGE_NUMBER CURRENT_KEY_ID ROTATING_OR_FLUSHING
Warnings:
Warning 1012 InnoDB: SELECTing from INFORMATION_SCHEMA.innodb_tablespaces_encryption but the InnoDB storage engine is not installed
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