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Ismael Juma commented on KAFKA-2842: ------------------------------------ I think this is intentional because of RFC952: <hname> ::= <name>*["."<name>] <name> ::= <let>[*[<let-or-digit-or-hyphen>]<let-or-digit>] https://tools.ietf.org/html/rfc952 > BrokerEndPoint regex does't support hostname with _ > --------------------------------------------------- > > Key: KAFKA-2842 > URL: https://issues.apache.org/jira/browse/KAFKA-2842 > Project: Kafka > Issue Type: Bug > Reporter: Sachin Pasalkar > Priority: Minor > > If you look at the code of BrokerEndPoint.scala, it has regex uriParseExp. > This regex is used for validation of brokers. However, it fails to validate > hostname with _ in it. e.g. adfs_212:9092 -- This message was sent by Atlassian JIRA (v6.3.4#6332)