real time data - How to get Acknowledgement from Kafka -


how acknowledgement kafka once message consumed or processed. might sound stupid there way know start , end offset of message ack has been received ?

what found far in 0.8 have introduced following way choose offset reading ..

kafka.api.offsetrequest.earliesttime() finds beginning of data in logs , starts streaming there, kafka.api.offsetrequest.latesttime() stream new messages.

example code https://cwiki.apache.org/confluence/display/kafka/0.8.0+simpleconsumer+example

still not sure acknowledgement part


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