Have any storage engines been removed in MySQL 8.0?
The PARTITION storage engine plugin which
provided partitioning support is replaced by a native
partitioning handler. As part of this change, the server can no
longer be built using
-DWITH_PARTITION_STORAGE_ENGINE.
partition is also no longer displayed in the
output of SHOW PLUGINS, or shown
in the INFORMATION_SCHEMA.PLUGINS
table.
In order to support partitioning of a given table, the storage
engine used for the table must now provide its own
(“native”) partitioning handler.
InnoDB is the only storage engine
supported in MySQL 8.0 that includes a native partitioning
handler. An attempt to create partitioned tables in MySQL 8.0
using any other storage engine fails. (The
NDB storage engine used by MySQL
Cluster also provides its own partitioning handler, but is
currently not supported by MySQL 8.0.)
A.2.4.
Can I prevent the use of a particular storage engine?
Yes. The
disabled_storage_engines
configuration option defines which storage engines cannot be
used to create tables or tablespaces. By default,
disabled_storage_engines is
empty (no engines disabled), but it can be set to a
comma-separated list of one or more engines.
A.2.5.
Is there an advantage to using the InnoDB
storage engine exclusively, as opposed to a combination of
InnoDB and non-InnoDB
storage engines?
Yes. Using InnoDB tables exclusively can
simplify backup and recovery operations. MySQL Enterprise Backup
does a hot backup of all
tables that use the InnoDB storage engine.
For tables using MyISAM or other
non-InnoDB storage engines, it does a
“warm” backup, where the database continues to run,
but those tables cannot be modified while being backed up. See
Section 30.2, “MySQL Enterprise Backup Overview”.
A.2.6.
What are the unique benefits of the ARCHIVE
storage engine?
The ARCHIVE storage engine stores large
amounts of data without indexes; it has a small footprint, and
performs selects using table scans. See
Section 16.5, “The ARCHIVE Storage Engine”, for details.
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