Hi, I see you noted the similarities with KIP-235. But KIP-235 might also solve what this KIP is trying to achieve.
When parsing bootstrap.servers, KIP-235 has the client add all underlying hostnames and IPs. And this happens before hitting the NetworkClient. So to me the client will try every single endpoint behind any bootstrap.servers record. See https://github.com/apache/kafka/pull/4485/commits/24757eb7b06bcf8c7d7649c85232c52b5d54f0e4#diff-89ef153462e64c250a21bd324ae1a851 which calls getAllByName like you suggested Jonathan Skrzypek -----Original Message----- From: Edoardo Comar [mailto:edoco...@gmail.com] Sent: 14 May 2018 14:17 To: dev@kafka.apache.org Subject: [DISCUSS] KIP-302 - Enable Kafka clients to use all DNS resolved IP addresses Hi all, We just opened a KIP to add support for the client to use all IPs returned by DNS for the brokers The details are here - https://urldefense.proofpoint.com/v2/url?u=https-3A__cwiki.apache.org_confluence_display_KAFKA_KIP-2D302-2B-2D-2BEnable-2BKafka-2Bclients-2Bto-2Buse-2Ball-2BDNS-2Bresolved-2BIP-2Baddresses&d=DwIBaQ&c=7563p3e2zaQw0AB1wrFVgyagb2IE5rTZOYPxLxfZlX4&r=nNmJlu1rR_QFAPdxGlafmDu9_r6eaCbPOM0NM1EHo-E&m=EJafFl1clRyolgtcu2uCc4_cIOJnlxb1r1n-D2Dti4k&s=C-UZ6KUG7JFiPD_CnHczDOVqH9-XC5f_OFkw4BTNrI4&e= The JIRA and provisional PR (where the discussion lead to the creation of this KIP) are : https://urldefense.proofpoint.com/v2/url?u=https-3A__issues.apache.org_jira_browse_KAFKA-2D6863&d=DwIBaQ&c=7563p3e2zaQw0AB1wrFVgyagb2IE5rTZOYPxLxfZlX4&r=nNmJlu1rR_QFAPdxGlafmDu9_r6eaCbPOM0NM1EHo-E&m=EJafFl1clRyolgtcu2uCc4_cIOJnlxb1r1n-D2Dti4k&s=3Puqs5iYoPsw6hARQr6gvokdFE-H5USMiNVGOUtNkJI&e= https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_apache_kafka_pull_4987&d=DwIBaQ&c=7563p3e2zaQw0AB1wrFVgyagb2IE5rTZOYPxLxfZlX4&r=nNmJlu1rR_QFAPdxGlafmDu9_r6eaCbPOM0NM1EHo-E&m=EJafFl1clRyolgtcu2uCc4_cIOJnlxb1r1n-D2Dti4k&s=Hqn5dOgQy4-MHTIJLE49O8bNomry3SoGq9OVoHU-CRA&e= Looking forward to the community's feedback. It would be amazing to have it voted by May 22nd :-) :-) Edoardo & Mickael
