title: Auto expiration and deletion of znodes in Zookeeper?
body: <p>Is there a way to have a znode auto expire and delete (under Zookeeper control) after some length of time? I don't need to keep a znode around after that point. I want to conserve resources.</p>
  
  <p>If your answer is "no, your application has to handle that", would you kindly point me to some documentation that makes that clear? (Right now, I suspect this may be the case, but I don't want to assume it too quickly.)</p>
  
  <p>If the answer is "not currently, but Zookeeper could be extended to do that", then I would be especially thankful to a suggestion of a good starting point for making such an enhancement.</p>