title: Maintaining RF when node fails
body: <p>Does Cassandra maintains RF when a node goes down. For e.g. if number of nodes is 5 and RF is 2 then when a single node goes down, does the remaining replica copies it's data to some other node to maintain the RF of 2?</p>
  
  <p>In the <a href="https://docs.datastax.com/en/cassandra/3.0/cassandra/architecture/archDataDistributeVnodesUsing.html" rel="nofollow noreferrer">Datastax's documentation</a>, it's mentioned that "<code>If a node fails, the load is spread evenly across other nodes in the cluster".</code> Does this mean that migration of data happens when a node goes down? Is this a feature available only in Datastax's Cassandra and not Apache Cassandra?</p>