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);
            }

     * implementations (nghttp2) forbid peers from taking advantage of settings before they have
     * acknowledged! In particular, we shouldn't send frames that assume a new `initialWindowSize`
     * until we send the frame that acknowledges this new size.
     *
     * Since we can't ACK settings on the current reader thread (the reader thread can't write) we

                    .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) {

        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

			feature := take(&required)
			if exceptionSet[feature] {
				// An "unfortunate" case: the feature was once
				// included in the API (e.g. go1.txt), but was
				// subsequently removed. These are already
				// acknowledged by being in the file
				// "api/except.txt". No need to print them out
				// here.
			} else if portRemoved(feature) {
				// okay.
			} else if featureSet[featureWithoutContext(feature)] {
				// okay.

    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedUntilFailure).toDouble())
      .isCloseTo(1000.0, 250.0)

    // Confirm a single ping was sent but not acknowledged.
    val logs = testLogHandler.takeAll()
    assertThat(countFrames(logs, "FINE: >> 0x00000000     8 PING          "))
      .isEqualTo(1)

                if (response.isAcknowledged()) {
                    logger.info("[Rebuild] Switched aliases from {} to {}", oldIndexName, newIndexName);
                    return true;
                }
                logger.warn("[Rebuild] Alias switch not acknowledged from {} to {}", oldIndexName, newIndexName);
            }

please ask on the developers list.

To make clear that you license your contribution under
the [Apache License Version 2.0, January 2004](http://www.apache.org/licenses/LICENSE-2.0)
you have to acknowledge this by using the following check-box.

- [ ] I hereby declare this contribution to be licenced under the [Apache License Version 2.0, January 2004](http://www.apache.org/licenses/LICENSE-2.0)

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

                }
                return c.admin().indices().prepareCreate(index).setSource(source, XContentType.JSON).execute();
            });
            if (indexResponse.isAcknowledged()) {
                logger.info("Created {} index.", index);
            } else if (logger.isDebugEnabled()) {
                logger.debug("Failed to create {} index.", index);
            }
        }