title: MariaDB tables getting stuck
body: <p>We've just migrated an app to a MariaDB and it runs fine for a while and then begins to slow down and eventually time out. The strange thing is, it seems to be only certain tables that are getting stuck.</p>
  
  <p>I can do <code>select count(*) from foo</code> on all tables and it works fine except for 2 which just hang. Restarting mysql fixes it.</p>
  
  <p>Does anyone have any idea what this might indicate? The tables in question are of the Aria type.</p>