how to delete all data from kafka topic code example

Example 1: remove all data from kafka topic

kafka-topics.sh --zookeeper localhost:2181 --alter --topic topic1 --config retention.ms=1000

Example 2: kafka delete topic

$ ./bin/kafka-topics.sh --zookeeper localhost:2181 --delete --topic remove-me
Topic remove-me is marked for deletion.
Note: This will have no impact if delete.topic.enable is not set to true.