Debugging error report percona 5.6

MySQL & MariaDB Other MySQL® Questions
1

I’m running percona 5.6 on a new centos 6.4 server. Things seem to work OK. I personally only really use InnoDB tables for my databases, but only the standard ‘mysql’ table is in MyISAM format.

I checked the msyql-error.log and saw these messages:

2013-11-14 10:10:26 9013 [ERROR] /usr/sbin/mysqld: Incorrect key file for table '/tmp/#sql_2335_0.MYI'; try to repair it
2013-11-14 10:10:26 9013 [ERROR] Got an error from unknown thread, /mnt/workspace/percona-server-5.6-rpms/label_exp/centos6-64/target/BUILD/Percona-Server-5.6.14-rel62.0/storage/myisam/mi_write.c:226
2013-11-14 10:10:27 9013 [ERROR] /usr/sbin/mysqld: Incorrect key file for table '/tmp/#sql_2335_2.MYI'; try to repair it
2013-11-14 10:10:27 9013 [ERROR] Got an error from unknown thread, /mnt/workspace/percona-server-5.6-rpms/label_exp/centos6-64/target/BUILD/Percona-Server-5.6.14-rel62.0/storage/myisam/mi_write.c:226
2013-11-14 13:53:33 9013 [ERROR] /usr/sbin/mysqld: Incorrect key file for table '/tmp/#sql_2335_0.MYI'; try to repair it
2013-11-14 13:53:33 9013 [ERROR] Got an error from unknown thread, /mnt/workspace/percona-server-5.6-rpms/label_exp/centos6-64/target/BUILD/Percona-Server-5.6.14-rel62.0/storage/myisam/mi_write.c:226
2013-11-14 15:51:54 9013 [ERROR] /usr/sbin/mysqld: Incorrect key file for table '/tmp/#sql_2335_0.MYI'; try to repair it
2013-11-14 15:51:54 9013 [ERROR] Got an error from unknown thread, /mnt/workspace/percona-server-5.6-rpms/label_exp/centos6-64/target/BUILD/Percona-Server-5.6.14-rel62.0/storage/myisam/mi_write.c:226
2013-11-14 19:39:09 9013 [ERROR] /usr/sbin/mysqld: Incorrect key file for table '/tmp/#sql_2335_0.MYI'; try to repair it
2013-11-14 19:39:09 9013 [ERROR] Got an error from unknown thread, /mnt/workspace/percona-server-5.6-rpms/label_exp/centos6-64/target/BUILD/Percona-Server-5.6.14-rel62.0/storage/myisam/mi_write.c:226
2013-11-15 00:18:24 9013 [ERROR] /usr/sbin/mysqld: Incorrect key file for table '/tmp/#sql_2335_0.MYI'; try to repair it
2013-11-15 00:18:24 9013 [ERROR] Got an error from unknown thread, /mnt/workspace/percona-server-5.6-rpms/label_exp/centos6-64/target/BUILD/Percona-Server-5.6.14-rel62.0/storage/myisam/mi_write.c:226

This seems to be relating MyISAM tables, which is then the ‘mysql’ information table.

Any idea what might be causing this?

I checked the /tmp dir, and it has plenty of space available.

2

These tables are temporary tables, either explicit ones created with “create temporary table … engine myisam” or implicit caused by some query. Apparently your MySQL or OS crashed when those (MyISAM) tables were still in use, hence are now corrupted. Removing them should fix the problem.