badaiaqrandista commented on a change in pull request #8644: URL: https://github.com/apache/kafka/pull/8644#discussion_r431622505
########## File path: clients/src/main/java/org/apache/kafka/clients/ClientUtils.java ########## @@ -108,10 +108,11 @@ public static ChannelBuilder createChannelBuilder(AbstractConfig config, Time ti static List<InetAddress> resolve(String host, ClientDnsLookup clientDnsLookup) throws UnknownHostException { InetAddress[] addresses = InetAddress.getAllByName(host); - if (ClientDnsLookup.USE_ALL_DNS_IPS == clientDnsLookup) { - return filterPreferredAddresses(addresses); - } else { + if (ClientDnsLookup.USE_FIRST_DNS_IP == clientDnsLookup) { return Collections.singletonList(addresses[0]); + } else { + // ClientDnsLookup.USE_ALL_DNS_IPS == clientDnsLookup || ClientDnsLookup.DEFAULT == clientDnsLookup + return filterPreferredAddresses(addresses); } Review comment: Yes, you are correct. If `client.dns.lookup=RESOLVE_CANONICAL_BOOTSTRAP_SERVERS_ONLY` , then it will resolves the hostname to IP address using the default behaviour. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org