I gone with this HDP Kafka PDF (https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.3/bk_kafka-component-guide/bk_kafka-component-guide.pdf)
Can someone brief on this line :
"Kafka consumers keep track of which messages have already been consumed by storing the current offset."
Please also correct my understanding on Current Offset and Commit Offset :
Current Offset is taken care by Kafka Broker .
Commit Offset is taken care by Consumer .