e90e091b_Apache_Kafka__Description
[Property] log.cleanup.policy [Default] delete [Description] 
This can take either the value delete or compact. If delete is set, log segments will be deleted when they reach the size or time limits set. If compact is set log compaction will be used to clean out obsolete records. This setting can be overridden on a per-topic basis (see the per-topic configuration section).
Apache Kafka
Description