[jira] [Created] (KAFKA-3185) Allow users to cleanup internal data

[Guozhang Wang (JIRA)]

Guozhang Wang created KAFKA-3185:
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             Summary: Allow users to cleanup internal data
                 Key: KAFKA-3185
                 URL: https://issues.apache.org/jira/browse/KAFKA-3185
             Project: Kafka
          Issue Type: Sub-task
            Reporter: Guozhang Wang


Currently the internal data is managed completely by Kafka Streams framework 
and users cannot clean them up actively. This results in a bad out-of-the-box 
user experience especially for running demo programs since it results internal 
data (changelog topics, RocksDB files, etc) that need to be cleaned manually. 
It will be better to add a

{code}
KafkaStreams.cleanup()
{code}

function call to clean up these internal data programmatically.



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