Subject: Re: [DISCUSS] KIP-590: Redirect Zookeeper Mutation Protocols to The Controller

Hi Boyang,

While re-reading the KIP, I've got few small questions/comments:

1. When auto topic creation is enabled, brokers will send a
to the controller instead of writing to ZK directly. It means that
creation of these
topics are subject to be rejected with an error if a CreateTopicPolicy is
used. Today,
it bypasses the policy entirely. I suppose that clusters allowing auto
topic creation
don't have a policy in place so it is not a big deal. I suggest to call
out explicitly the
limitation in the KIP though.

2. In the same vein as my first point. How do you plan to handle errors
when internal
topics are created by a broker? Do you plan to retry retryable errors

3. Could you clarify which listener will be used for the internal requests?
Do you plan
to use the control plane listener or perhaps the inter-broker listener?


On Mon, May 4, 2020 at 9:37 AM Sönke Liebau
<[EMAIL PROTECTED]lid> wrote: