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Current state: Under Discussion
Discussion thread: http://mail-archives.apache.org/mod_mbox/kafka-dev/201509.mbox/%3CCAG9AH6cp57nsCfahndtbBCPP_Nk3AW8TmHV6drSwSd8Eswv0Ag@mail.gmail.com%3E here
JIRA: TBD (If Kafka Dev team decide to incorporate this feature)
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