InnoDB and XtraDB data scrubbing was introduced in MariaDB 10.1.3.
The Information Schema INNODB_TABLESPACES_SCRUBBING
table contains data scrubbing information.
The PROCESS
privilege is required to view the table.
It has the following columns:
Column | Description |
---|---|
SPACE |
InnoDB table space id number. |
NAME |
Path to the table space file, without the extension. |
COMPRESSED |
The compressed page size, or zero if uncompressed. |
LAST_SCRUB_COMPLETED |
Date and time when the last scrub was completed, or NULL if never been performed. |
CURRENT_SCRUB_STARTED |
Date and time when the current scrub started, or NULL if never been performed. |
CURRENT_SCRUB_ACTIVE_THREADS |
Number of threads currently scrubbing the tablespace. |
CURRENT_SCRUB_PAGE_NUMBER |
Page that the scrubbing thread is currently scrubbing, or NULL if not enabled. |
CURRENT_SCRUB_MAX_PAGE_NUMBER |
When a scrubbing starts rotating a table space, the field contains its current size. NULL if not enabled. |
SELECT * FROM information_schema.INNODB_TABLESPACES_SCRUBBING LIMIT 1\G *************************** 1. row *************************** SPACE: 1 NAME: mysql/innodb_table_stats COMPRESSED: 0 LAST_SCRUB_COMPLETED: NULL CURRENT_SCRUB_STARTED: NULL CURRENT_SCRUB_PAGE_NUMBER: NULL CURRENT_SCRUB_MAX_PAGE_NUMBER: 0 ROTATING_OR_FLUSHING: 0 1 rows in set (0.00 sec)
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Licensed under the Creative Commons Attribution 3.0 Unported License and the GNU Free Documentation License.
https://mariadb.com/kb/en/information-schema-innodb_tablespaces_scrubbing-table/