.execute()) {
                final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());
                if (!Constants.TRUE.equalsIgnoreCase(contentMap.get("acknowledged").toString())) {
                    throw new DictionaryException("Failed to update " + dictFile.getPath());
                }
            } catch (final IOException e) {

            if (!createIndexResponse.isAcknowledged()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to create next index (not acknowledged): index={}", indexName);
                }
                throw new SuggesterException("Failed to create next index (not acknowledged): " + indexName);
            }

        final CreateIndexResponse response =
                client.admin().indices().prepareCreate(indexName).addAlias(new Alias(aliasName)).execute().actionGet();
        assertTrue("Index creation should be acknowledged", response.isAcknowledged());

        final Suggester suggester = Suggester.builder().build(client, "test");

        // Use reflection to access private method

                        .setSettings(loadIndexSettings(), XContentType.JSON)
                        .execute()
                        .actionGet(settings.getIndicesTimeout());
                if (!response.isAcknowledged()) {
                    throw new SuggestSettingsException("Failed to create " + actualIndex + "/" + type + " index.", e);
                }
                client.admin()
                        .cluster()

                    .setSource(source, XContentType.JSON)
                    .execute()
                    .actionGet(fessConfig.getIndexIndicesTimeout());
            if (indexResponse.isAcknowledged()) {
                logger.info("Created index: indexName={}", indexName);
                return true;
            }
            if (logger.isDebugEnabled()) {