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Discussion thread: here [Change the link from the KIP proposal email archive to your own email thread]
JIRA: here [https://issues.apache.org/jira/browse/ KAFKA-2061]
Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).
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I added some code to kafka-run-class.sh, since this is make easy to maintain each commands.
I think this option should be provided by all Kafka commands.
However Kafka commands have each option parsers, I think but adding version option to each option parser makes hard to maintion maintain when changing command and adding new one.
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