Hi,
> 4. but when i close my Ubuntu virtual machine and i start Kafka and > Zookeeper again. I can see the topics present in the kafka cluster. However > all are default to 0 offset and data seems to have been lost. By default kafka stores the data in /tmp/kafka-logs directory. When you restart your Ubuntu VM, you will lose all your /tmp contents. kafka log directory can be changed by setting property "log.dirs" in server.properties. Regards Manikumar
