only consider MIN_ISR requirements if listeners are started

[viktorerlingsson]

WHAT is this pull request doing?

Ignores MIN_ISR requirements until listener has been started. Fixes #727

HOW can this pull request be tested?

Specs? Manual steps? Please fill me in.

[viktorerlingsson]

This seems to work for starting with min_isr > 0. WDYT @carlhoerberg ?

[carlhoerberg]

I'm just wondering if we should have min_isr at all, Postgres doesnt, Kafka only doesnt ack publishes when min isr isnt fulfilled. Maybe we should do the same? Only not confirm publishes?

But at least this doesnt brakes the "guarantee", if another server with the exact same data dir starts they would end up with the same data anyway.

[viktorerlingsson]

I'm just wondering if we should have min_isr at all, Postgres doesnt, Kafka only doesnt ack publishes when min isr isnt fulfilled. Maybe we should do the same? Only not confirm publishes?

Hmm, yeah, I think that makes sense!

But at least this doesnt brakes the "guarantee", if another server with the exact same data dir starts they would end up with the same data anyway.

👍

[carlhoerberg]

But probably have to be in combination with storing metadata/definitions in etcd.

[carlhoerberg]

Fixed in #797