checksum
In InnoDB, a validation mechanism to detect corruption when a page in a tablespace is read from disk into the InnoDB buffer pool. This feature is turned on and off by the innodb-checksums configuration option. In MariaDB 5.6, you can enable a faster checksum algorithm by also specifying the configuration option innodb-checksum-algorithm=crc32.
The innochecksum command helps to diagnose corruption problems by testing the checksum values for a specified tablespace file while the MariaDB server is shut down.
MySQL also uses checksums for replication purposes. For details, see the configuration options binlog_checksum, master_verify_checksum, and slave_sql_verify_checksum.
See also buffer pool.
See also page.
See also tablespace.