### Purging a topic
 `bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic MyTopic --config retention.ms=1000`
 
... wait a minute ...

 `bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic MyTopic --delete-config retention.ms`

### Get the earliest offset of a topic
`bin/kafka-run-class.sh kafka.tools.GetOffsetShell --broker-list kafkasrv:9092 --topic mytopic --time -2`

### Get the latest offset of a topic
`bin/kafka-run-class.sh kafka.tools.GetOffsetShell --broker-list kafkasrv:9092 --topic mytopic --time -1`