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The final audit we do is on the correctness of the data delivery. We audit that every message that is sent is consumed by all consumers and measure the lag for this to occur. For important topics we alert if a certain completeness is not achieved in a certain time period. The details of this are discussed in KAFKA-260.

Zookeeper

Zookeeper is essential for the correct operation of Kafka. There are a number of things that must be done to keep zookeeper running happily as we have learned the hard way, hopefully Dave and Neha will add this since I don't know what we did.