How do I check if mysql index is corrupted?
Q: How can I determine if other tables have similar index corruption? A: Use CHECK TABLE ….If you must do the snapshot thing, please to do this on the Slave:
- Run SET GLOBAL innodb_fast_shutdown = 0;
- service mysql stop.
- Do your snapshot.
- service mysql start.
- Add innodb_fast_shutdown to /etc/my. cnf.
How do I fix InnoDB corruption cases for mysql?
Steps to get it back up.
- Stop mysqld.
- Backup /var/lib/mysql/ib*
- Add the following line into /etc/my.cnf: innodb_force_recovery = 4.
- Restart mysqld.
- Dump all tables:# mysqldump -A > dump.sql.
- Drop all databases which need recovery.
- Stop mysqld.
- Remove /var/lib/mysql/ib*
How to fix index corruption in InnoDB table?
A: Use OPTIMIZE TABLE to rebuid the InnoDB table that have corrupt indexes. This causes a complete table rebuild which fixes the corruption. You may have the easiest solution there is. However, I would love to clarify some things:
Is the Amazon RDS instance aware of InnoDB index corruption?
Contrariwise, an Amazon RDS MYSQL Instance is aware and built for such InnoDb-centric scenarios. Only if there are active MyISAM tables in the RDS Instance would FLUSH TABLES WITH READ LOCK; be a necessary evil to manually perform.
Why are all of my indexes corrupt in MariaDB?
I’ve fixed this by dropping and recreating index, but its the 2nd time now (last time 6 indices was affected), so i want to know: Why are my indices corrupt? My only starting point now is, that both times i’ve updated MariaDB 1 or 2 hours earlier (via apt-get).
Why does alter table my _ table engine = InnoDB?
In regards to your original question, when you ran ALTER TABLE my_table ENGINE=InnoDB; you simply rebuilt index pages reading from data pages of the table, most likely bypassing the ibdata1 Insert Buffer. This is why that worked for you.