// partial results
                            final StringBuilder buf = new StringBuilder(1000);
                            buf.append("[SEARCH TIMEOUT] {\"exec_time\":").append(execTime)//
                                    .append(",\"request\":").append(searchRequestBuilder.toString())//
                                    .append(",\"response\":").append(r.toString()).append('}');

            buf.append("\"q\":");
            buf.append(escapeJson(query));
            buf.append(",\"query_id\":");
            buf.append(escapeJson(queryId));
            buf.append(",\"exec_time\":");
            buf.append(execTime);
            buf.append(",\"query_time\":");
            buf.append(queryTime);
            buf.append(',');
            buf.append("\"page_size\":");