is that a joke?

of course they wont support mysqldump, but there is pg_dump, which does the same sort of thing except you can dump to binary and compress it on the way without pipes/forks.

Wait, hold the phone, are you telling me by migrating to Postgres I can shave a handful of system calls off my long-running i/o bound logical backups!? Oh Postgres, is there anything you can't do better than MySQL?

No I'm telling you that `mysqldump` will not support postgres the same way that a diesel truck will not take petrol.

Not sure if you are trolling, but why would Postgres want to support mysqldump? Postgres has pg_dump and MySQL has mysqldump. If you are comparing the capabilities of pg_dump vs mysqldump, that's a different discussion.