SearchEngineUtil.scroll(index, hit -> {
                final String data = "{\"index\":{\"_index\":\"" + index + "\",\"_id\":\"" + StringEscapeUtils.escapeJson(hit.getId())
                        + "\"}}\n" + hit.getSourceAsString() + "\n";
                try {
                    zos.write(data.getBytes(Constants.CHARSET_UTF_8));
                } catch (final IOException e) {

                                        + StringEscapeUtils.escapeJson(hit.getId()) + "\"}}\n");
                                writer.write(hit.getSourceAsString());
                                writer.write("\n");
                            } catch (final IOException e) {
                                throw new IORuntimeException(e);
                            }