Connection error when passing "localhost" to connect

[gggeek]

The following execution lines result in vastly different error reports:

percona-playback --mysql-host=localhost --mysql-username=root --mysql-password=password --mysql-schema=ezp_502 --query-log-file=ezp500queries.log --show-per-connection-query-count

and

percona-playback --mysql-username=root --mysql-password=password --mysql-schema=ezp_502 --query-log-file=ezp500queries.log --show-per-connection-query-count

It seems that the 1st invocation actually does not connect (see also bug about not connecting not being properly detected / reported). Otoh when using "mysql" from the command line I can connect both with and without "-hlocalhost"