Hi,

I was testing the early access preview of the new ZooKeeper-less mode and
noticed two things I wanted to bring up here. My testing scenario was a
cluster of three Kafka nodes in combined mode and a single Kafka Connect
node, all running via Docker Compose.

* I stopped two of the Kafka nodes; the remaining node then was marked as
"leader" as per its metrics and in the new metadata shell; is this
expected? As one out of three nodes doesn't have a quorum, I'd rather have
expected to see that there isn't a leader in this situation. Indeed trying
to create a topic in this situation times out, so I reckon that the
remaining node doesn't actually act as the quorum leader.
* After restarting the two nodes, in most cases they, as well as the
Connect node, each would use up 100% CPU, like threads stuck in a spinning
loop. Is this issue already known, or should I log one in Jira?

Thanks a lot for your help (and this great feature in general, really
exciting to see this),

--Gunnar

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