Hi all, There was some discussion recently on deprecating the old consumer ( https://www.mail-archive.com/dev@kafka.apache.org/msg59084.html). Ismael suggested to cover the discussion and voting of major deprecations like this under a KIP.
So I started KIP-109 ( https://cwiki.apache.org/confluence/display/KAFKA/KIP-109%3A+Old+Consumer+Deprecation ) and look forward to your feedback and comments. We'd like to implement this deprecation in the upcoming 0.10.2.0 release. Thanks. --Vahid