title: How to remove/clear state stores in Kafka Streams?
body: <p>I have a custom <code>Transformer</code> implementation in the end of my kafka-streams DSL, with a persistent changelog <code>KeyValueStore</code> bound to it. </p>
  
  <p>Since few weeks I have been putting way too much data in the store. Now whenever I load the application it eats up way too much RAM.</p>
  
  <p>However, the application itself is just a prototype so I don't mind clearing the store entirely.</p>
  
  <p>I could rename the <code>kafka.application.id</code> and the <code>state-store-name</code> but that's a temporary workaround(and the corresponding data/topics won't be deleted).</p>
  
  <p>How do I purge it entirely?</p>