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Alright, I have updated version 5.1 to version 5.6 without uninstalling the old one by using update-alternatives. This works just fine on our production/master server, but our replication slave seems to be having trouble.

First, in the processlist mysqld_safe just keeps starting the logger tool indefinitely until hundreds of instances are running and I restart the server manually.
Secondly, the server only runs for a couple seconds at a time without actually restarting. Whenever I run status in the MySQL shell, it has to reconnect and the status print says something like Uptime: 9 sec, even if it's been running for hours.


| Id | User        | Host      | db   | Command | Time | State                                   | Info                  |
|  1 | system user |           | NULL | Connect |    0 | Checking master version                 | NULL                  |
|  2 | system user |           | NULL | Connect |    0 | Waiting for the next event in relay log | NULL                  |
|  3 | root        | localhost | NULL | Query   |    0 | init                                    | SHOW FULL PROCESSLIST |

The syslog seems fine, except that it complains about every table in the performance_schema database like this:

[ERROR] Native table 'performance_schema'.'session_account_connect_attrs' has the wrong structure

What's going wrong and how do I fix it?

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Update: Executing STOP SLAVE; stops the restarting behaviour and allows for maintenance tasks to be executed. I'm currently running mysql_upgrade just to be safe. – Cobra_Fast Oct 15 '13 at 10:49
up vote 0 down vote accepted

For whatever reason, stopping the slave replication and running the mysql_upgrade tool and then starting the replication again fixed the issue.

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