Out of curiosity, what errors wind up in logstash from this script, if any?

AFAICS error msgs are written to php://stderr by default which I would expect to end up in logstash. There's a --log option in dumpRdf.php which allows you to specify where error msgs get written to, so I think you can probably send them to a file instead of logstash. Would that work for you? Probably you ought to test this first with --limit (I don't have logstash locally so I can't be sure I'm right)

It would work to get a test dump out, and yeah I'll do a little test first. But for production I'd like to be able to not write them at all, no point to it.

Aha! I found another flag --ignore-missing which I think does exactly what you need

$this->addOption(
			'ignore-missing',
			'Ignore missing IDs, do not report errors on them',
			false,
			false
		);

Brilliant! I'll be doing some fun things tomorrow then. Thanks!

@ArielGlenn ok to close this?

Ah yes it is! The flag does all it needs to, sorry about that.