Hiya! I've been trying to merge https://github.com/zendesk/maxwell/pull/457, which adds a much-requested feature of Maxwell, that of being able to have a topic-per-mysql-table. When we receive a row we programmatically generate the topic name, and the first thing we do is call `KafkaProducer#partitionsFor(topic)`, so that we know how to partition the data.
The problem I'm running into is in trying to detect the case where a
topic doesn't exist. If auto-creation is on, `partitionsFor()` seems to
correctly auto-create the topic, but if auto-creation is off the
behavior is kinda wonky; kafka goes into a metadata-fetch loop, logging
"Error while fetching metadata with correlation id 573
:{topic=UNKNOWN_TOPIC_OR_PARTITION}"
but then ultimately throwing me back a `TimeoutException` after 60 tries
or so.
I can rescue/rethrow the TimeoutException, but it seems like there might
be a better way that I'm missing. Any ideas? I'd ideally just like a
way to fail fast and clean when the topic doesn't exist (and
auto-creation is off).
Thanks,
Ben Osheroff
zendesk.com
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