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https://issues.apache.org/jira/browse/KAFKA-7954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16833450#comment-16833450
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Ismael Juma commented on KAFKA-7954:
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[~rpo...@gmail.com] See my question above, have you tried a newer version?
> When broker IP addresses change client never resolves new addresses to fetch
> metadata
> -------------------------------------------------------------------------------------
>
> Key: KAFKA-7954
> URL: https://issues.apache.org/jira/browse/KAFKA-7954
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 2.1.0
> Reporter: Robert Pofuk
> Priority: Major
>
> I'm running Kafka on AWS autoscaling group. Currently we are having
> infrastructure immutable and we have no fixed IP addresses.
> When we recreate out Kafka cluster all brokers get new IP addresses, even in
> case when all nodes die horrible death simultaneously.
> Looking at the code IP addresses are resolved and added
> ClusterConnectionStates class line 119:
>
> nodeState.put(id, new NodeConnectionState(ConnectionState.CONNECTING, now,
> this.reconnectBackoffInitMs, ClientUtils.resolve(host, clientDnsLookup)));
> At this point ClientUtils.resolve resolves IP addreses. If brokers receive
> new IP addresses each subsequent metadata fetch will fail because none of the
> nodes will be addressable by IP addresses that where resolved on previous
> metadata fetch.
>
> Since addresses list will never be evicted old IP addresses will stay there
> forever.
>
>
>
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