SearchResponse response = client.prepareSearch(index)
                .setScroll(scrollForDelete)
                .setSize(sizeForDelete)
                .setFetchSource(new String[] { fessConfig.getIndexFieldId() }, null)
                .setQuery(queryBuilder)
                .setPreference(Constants.SEARCH_PREFERENCE_LOCAL)
                .execute()

                    searchRequestBuilder.setQuery(
                            QueryBuilders.termsQuery(docIdField, deleteFileMap.keySet().toArray(new String[deleteFileMap.size()])));
                    searchRequestBuilder.setFetchSource(new String[] { docIdField }, StringUtil.EMPTY_STRINGS);
                    return true;
                }).forEach(m -> {
                    final Object docId = m.get(docIdField);