Jest vs. Elasticsearch Java Rest API Client for Elasticsearch 6.00

dadoonet · January 25, 2018, 5:40pm

The most mature is the TransportClient IMO.
BUT if you think about the future, this client will be retired in the future and you should consider instead the REST Client. Not as mature but lot of needed APIs for most use cases are here.
And you have access to the Low Level client in case something you need is missing.

For example, I wrote some code here for my own needs that extend the High Level Client:

github.com

dadoonet/fscrawler/blob/master/elasticsearch-client/src/main/java/fr/pilato/elasticsearch/crawler/fs/client/ElasticsearchClient.java#L76-L106


/**
 * Create an index
 * @param index index name
 * @param ignoreErrors don't fail if the index already exists
 * @param indexSettings index settings if any
 * @throws IOException In case of error
 */
public void createIndex(String index, boolean ignoreErrors, String indexSettings) throws IOException {
    logger.debug("create index [{}]", index);
    logger.trace("index settings: [{}]", indexSettings);
    try {
        StringEntity entity = null;
        if (!isNullOrEmpty(indexSettings)) {
            entity = new StringEntity(indexSettings, ContentType.APPLICATION_JSON);
        }
        Response response = getLowLevelClient().performRequest("PUT", "/" + index, Collections.emptyMap(), entity);
        logger.trace("create index response: {}", LowLevelClientJsonUtil.asMap(response));
    } catch (ResponseException e) {
        if (e.getResponse().getStatusLine().getStatusCode() == 400 &&
                (e.getMessage().contains("index_already_exists_exception") || // ES 5.x

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My 2 cents.

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Jest vs. Elasticsearch Java Rest API Client for Elasticsearch 6.00

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