For the first question, yes.

For the second one, this is documented in
http://kafka.apache.org/documentation.html#brokerconfigs

"Note that all per topic configuration properties below have the format of
csv (e.g., "topic1:value1,topic2:value2")."
Thanks,
Jun

On Tue, Aug 27, 2013 at 11:52 AM, Yu, Libo <[EMAIL PROTECTED]> wrote:
 
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