Drive-by fix while working on this issue. Noted there wasn't really a…

… clear way to tell from

logs whether a given query was handled by the proxy or passed on to upstream servers.  Added
some minimal logging to provide some additional info on this point.

proxy/proxy.go

@@ -672,13 +672,15 @@ func (c *client) handleQuery(raw *frame.RawFrame, msg *partialQuery, customPaylo
 	handled, stmt, err := parser.IsQueryHandled(parser.IdentifierFromString(c.keyspace), msg.query)
 
 	if handled {
+		c.proxy.logger.Debug("Query is handled")
 		if err != nil {
 			c.proxy.logger.Error("error parsing query to see if it's handled", zap.Error(err))
 			c.send(raw.Header, &message.Invalid{ErrorMessage: err.Error()})
 		} else {
 			c.interceptSystemQuery(raw.Header, stmt)
 		}
 	} else {
+		c.proxy.logger.Debug("Query is not handled")
 		c.execute(raw, c.getDefaultIdempotency(customPayload), c.keyspace, msg)
 	}
 }