consumer ack for high-level consumer?

[Chia-Chun Shih]

Hi,

I am a new to Kafka. In my understanding, high-level consumer (
ZookeeperConsumerConnector) changes offset when message is drawn
by ConsumerIterator. But I would like to change offset when message is
processed, not when message is drawn from broker. So if a consumer dies
before a message is completely processed, the message will be processed
again. Is it possible?

Thanks.