This directory contains examples of client code that uses kafka. To run the demo: 1. Start Zookeeper and the Kafka server 2. For simple consumer demo, `run bin/java-simple-consumer-demo.sh` 3. For unlimited sync-producer-consumer run, `run bin/java-producer-consumer-demo.sh sync` 4. For unlimited async-producer-consumer run, `run bin/java-producer-consumer-demo.sh` 5. For exactly once demo run, `run bin/exactly-once-demo.sh 6 3 50000`, this means we are starting 3 EOS instances with 6 topic partitions and 50000 pre-populated records. 6. Some notes for exactly once demo: 6.1. The Kafka server has to be on broker version 2.5 or higher. 6.2. You could also use Intellij to run the example directly by configuring parameters as "Program arguments"