public void close() {
    try {
      httpClient.close();
    } catch (Exception e) {
      LOG.info("Exception while shutting down connection manager", e);
    }
  }
Send a DELETE request
@param cluster the cluster definition
@param path    the path or URI
@return a Response object with response detail
@throws IOException for error
hbase-rest/src/main/java/org/apache/hadoop/hbase/rest/client/Client.java