Hi, I'm working with KAFKA_2.11-1.0.0.
I'm using the following configuration in server.properties for LOG RETENTION POLICY: * log.retention.hours=168 * log.segment.bytes=1073741824 * log.retention.check.interval.ms=300000 I'm trying to delete the kafka topic "testTopic", by overriding the log.retention.hours properties key using the following command: * kafka-topics.sh --alter --zookeeper zookeeper --topic testTopic--config retention.ms=60000 Then, i can see the new configuration is applied for the topic 'testTopic" using the following command: * kafka-topics.sh --describe --zookeeper zookeeper --topic testTopic * Topic:testTopic PartitionCount:1 ReplicationFactor:1 Configs:retention.ms=60000 Topic: testTopic Partition: 0 Leader: 1 Replicas: 1 Isr: 1 Once the "log.retention.check.interval.ms" is applied by kafka (by default 5min), my data (in kafka-logs/testTopic-0) are correctly deleted until the last index of the topic. But folder kafka-logs/testTopic-0 in the file system and the topic "testTopic" in kafka UI are still present, whereas there is no data available. Why the folder kafka-logs is not deleted? Is it the normal work using this configuration? What is the best way to delete kafka data for a topic, and finally delete the topic (to no longer appear in kafka UI and in the file system) ? Thanks,