Elasticsearch Java Client 9.2.0

sources in CompositeAggregation was wrongly mapped as List<Map>, but the server doesn't actually accept more than one value, so the type has been changed to List<NamedValue>.

Action
Change the builder to use the correct type. Example:

• Old

  esClient.search(s -> s
      .aggregations("agg", a -> a
          .composite(c -> c
              .sources(Map.of("source", CompositeAggregationSource.of(cas -> cas...))))
      )
  );
  

• New

  esClient.search(s -> s
      .aggregations("agg", a -> a
          .composite(c -> c
              .sources(NamedValue.of("source", CompositeAggregationSource.of(cas -> cas...))))
      )
  );
  

overallScore in GetOverallBucketsRequest was wrongly mapped as String, but the correct value to be sent to the server is Double, so the type has been changed to Double.

Action
Change the builder to use the correct type. Example:

• Old

  esClient.ml()
      .getOverallBuckets(b -> b
          .overallScore("2")
          ...
  );
  

• New

  esClient.ml()
      .getOverallBuckets(b -> b
          .overallScore(2D)
          ...
  );
  

level in NodesStatsRequest was wrongly mapped as the Level enum, which did not match the values accepted by the server, so it has been replaced with NodeStatsLevel.

Action
Change the builder to use the correct enum. Example:

• Old

  esClient.nodes()
      .stats(s -> s
          .level(Level.Indices)
      );
  

• New

  esClient.nodes()
      .stats(s -> s
          .level(NodeStatsLevel.Indices)
      );
  

masterTimeout in StreamsStatusRequest was wrongly mapped as TimeUnit, but the correct value to be sent to the server is Time, so the type has been changed to Time.

Action
Change the builder to use the correct type. Example:

esClient.streams()
    .status(s -> s
        .masterTimeout(Time.of(t -> t.time("10s")))
    );

Following the stable release of the Jackson library version 3, the Jackson 3 implementation of object mapper is now available! The default implementation will stay version 2 for now, so to try the new implementation replace JacksonJsonpMapper with Jackson3JsonpMapper. Example with shortcut builder:

try (ElasticsearchClient client = ElasticsearchClient.of(e -> e
        .jsonMapper(new Jackson3JsonpMapper())
        .host("your-host")
        .apiKey("your-api-keys"))) {
        ...
}

The Elasticsearch Java client historically used a "Low Level Rest Client" (LLRC) based on Apache http client version 4 to handle http communications and distribution of requests among the nodes of a cluster.

This directory is a port of this client to Apache http client version 5 that is mostly a drop-in replacement, except for the initialization phase.

It is provided as an independent library as a convenience to users who have an existing code based on LLRC and would like to migrate to the more modern Apache http 5 library.

https://mvnrepository.com/artifact/co.elastic.clients/elasticsearch-rest5-client