Correct transaction management. cf. bug https://openrdf.atlassian.net/browse/SES-2295 and tomcat default management of PUT request with form data (application/x-www-form-urlencoded encoded)
class { 'mysql::server':
root_password => 'password'
}
class { 'mysql::server::backup':
backupuser => 'myuser',
backuppassword => 'mypassword',
backupdir => '/tmp/backups',
}