Do you have enough consumers representing the number of partitions you
have?  You should have one consumer within a consumer group for each
partition... Think of it as threads, if you have 5 partitions you need 5
threads... if you only have 3 consumers(threads) then it is possible the
data is on one of the other two partitions that has no one reading from it.

/*******************************************
 Joe Stein
 Founder, Principal Consultant
 Big Data Open Source Security LLC
 http://www.stealth.ly
 Twitter: @allthingshadoop <http://www.twitter.com/allthingshadoop>
********************************************/
On Sun, Nov 10, 2013 at 7:34 PM, S L <[EMAIL PROTECTED]> wrote:
 
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