High level consumer replaying the messages

Hi ,

I have set up kafka 0.8 in 3 servers. I have pushed some data into these
servers. The number of partitions i use is 12, with a replication factor
of 2.
We use high level consumer to consume messages. we set auto commit to
false, and we do commits almost after each and every successful message
consumption.
The problem i am facing now is, If i restart my consumers, then the
messages are getting replayed.

I checked the

bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --group group1
--zkconnect zkhost:zkport --topic testtopic

I see a high lag in some of the partitions and some partitions have none
as the owner.
To verify consumer rebalance i used the following command

bin/kafka-run-class.sh kafka.tools.VerifyConsumerRebalance --group
group1 --zookeeper.connect zkhost:zkport

but i see errors

[2014-04-10 03:24:37,832] ERROR No owner for partition [testtopic,0]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,861] ERROR No owner for partition [testtopic,1]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,862] ERROR No owner for partition [testtopic,2]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,863] ERROR No owner for partition [testtopic,3]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,864] ERROR No owner for partition [testtopic,4]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,870] ERROR No owner for partition [testtopic,5]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,871] ERROR No owner for partition [testtopic,6]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,872] ERROR No owner for partition [testtopic,7]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,873] ERROR No owner for partition [testtopic,8]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,874] ERROR No owner for partition [testtopic,9]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,928] ERROR No owner for partition [testtopic,9]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,928] ERROR No owner for partition [testtopic,10]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,930] ERROR No owner for partition [testtopic,10]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,930] ERROR No owner for partition [testtopic,11]
(kafka.tools.VerifyConsumerRebalance$)
[2014-04-10 03:24:37,931] ERROR No owner for partition [testtopic,11]
(kafka.tools.VerifyConsumerRebalance$)

I have seen this (
http://mail-archives.apache.org/mod_mbox/kafka-users/201311.mbox/%3CCA+B+UZsnpuNicHcj6Q6yJaLccyhNmoOieMj_eSy0YQUCoEMoxg [ at ] mail.gmail.com%3E)
in the mail archives and i checked my consumer log for those patterns
but couldn't find any in my logs.

Can some one help me with this.

Thanks
Arjun Narasimha kota