Hi

I read in "MySQL, Fifth Edition" by Paul DuBois that we should do a regular
mysqlcheck.

We have all InnoDB tables. As far as I unterstand the tables get read and
write locked during mysqlcheck.

The database will grow 100x in size, at the moment only initial load.

It means big downtime.

$ time mysqlcheck --all-databases
[...]

real 29m41.449s
user 0m0.019s
sys 0m0.015s

mysql> SELECT table_schema "Data Base Name", SUM( data_length +
index_length) / 1024 / 1024
-> "Data Base Size in MB" FROM information_schema.TABLES GROUP BY
table_schema ;
+--------------------+----------------------+
| Data Base Name | Data Base Size in MB |
+--------------------+----------------------+
| imzweffefr | 38420.97170544 |
| information_schema | 0.00781250 |
| mysql | 0.63046169 |
+--------------------+----------------------+
3 rows in set (5.86 sec)

You all do mysqlcheck? Is it really mandatory? What's the risk if I don't
do it regularly?