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https://www.percona.com/blog/2010/12/09/mysql-optimize-tables-innodb-stop/
Innodb/XtraDB tables do benefit from being reorganized often. You can get data physically laid out in primary key order as well as get a better feel for the primary key and index pages, and so use less space, it’s just that MySQL OPTIMIZE TABLE might not be the best way to do it.
https://dev.mysql.com/doc/refman/8.0/en/optimize-table.html
OPTIMIZE TABLE using online DDL is not supported for InnoDB tables that contain FULLTEXT indexes. The table copy method is used instead. InnoDB stores data using a page-allocation method and does not suffer from fragmentation in the same way that legacy storage engines (such as MyISAM) will.
https://dba.stackexchange.com/questions/55934/how-to-optimize-innodb-tables-in-mysql
I’ve been researching how to optimize only fragmented tables in MySQL and reviewed this post on optimizing tables.It basically performs a query against the information_schema database for any table with data_free > 0 and builds a SQL statement to OPTIMIZE only those tables. I ran this query and it identified 148 tables for optimization.
https://serverfault.com/questions/125515/mysql-table-does-not-support-optimize
When you run OPTIMIZE TABLE against InnoDB tables it outputs the Table does not support optimize, doing recreate + analyze instead message. From the documentation: OPTIMIZE TABLE is mapped to ALTER TABLE, which rebuilds the table to update index statistics and free unused space in the clustered index. MySQL 5.1 OPTIMIZE TABLE syntax
https://dba.stackexchange.com/questions/116255/how-can-i-defragment-tables-in-mysql
The message you saw did not say "Table does not support optimize, do recreate + analyze instead OK" but the message said "Table does not support optimize, doing recreate + analyze instead OK" This means the InnoDB Storage Engine already executed. ALTER TABLE GEO ENGINE='InnoDB'; ANALYZE TABLE GEO; There was no need to do it again. ASPECT #2
https://mysqlserverteam.com/mysql-5-6-17-improved-online-optimize-table-for-innodb-and-partitioned-innodb-tables/
Mar 27, 2014 · OPTIMIZE TABLE is a maintenance operation used to recover the disk space and improve IO efficiency. It is recommended that the operation is carried out under the cases noted in the optimize table documentation.. MySQL versions prior to MySQL 5.6.17 does not allow concurrent changes (inserts, updates, deletes) to the table when the OPTIMIZE TABLE operation is being …
https://mariadb.com/kb/en/optimize-table/
Defragmenting. OPTIMIZE TABLE works for InnoDB (before MariaDB 10.1.1, only if the innodb_file_per_table server system variable is set), Aria, MyISAM and ARCHIVE tables, and should be used if you have deleted a large part of a table or if you have made many changes to a table with variable-length rows (tables that have VARCHAR, VARBINARY, BLOB, or TEXT columns).
https://www.justin.my/2010/09/table-does-not-support-optimize-doing-recreate-analyze-instead/
Sep 12, 2010 · Everytime you do optimize MySQL, by using mysqlcheck -A -o or using ./mysql_optimize from here. You may see the output . Table does not support optimize, doing recreate + analyze instead.. It is because the table that you are using is InnoDB.
https://www.laurencegellert.com/2011/07/mysql-maintenance-tasks-for-innodb-with-mysql-5-1/
Jul 22, 2011 · MySQL Maintenance Tasks for InnoDB with MySQL 5.1. by Laurence Posted on July 22, 2011. From time to time, MySQL 5.1 databases need a little house keeping. We found our production DB had a hard time running a simple join query between two tables with about 400k rows. ... If you get “Table does not support optimize, doing recreate + analyze ...
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