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Elasticsearch Java Client 9.0.4

Discover what changed in the 9.0.4 version of the Java client.

There are no breaking changes in this version of the client.

Rest5ClientBuilder now has the same level of in-depth configuration as the legacy RestClientBuilder, allowing you to customize the underlying Apache HttpClient through callback functions. For example, here's how to configure the IOReactor thread count:

Rest5ClientBuilder builder = Rest5Client
    .builder(new HttpHost("localhost", 9200))
    .setHttpClientConfigCallback(c -> c
        .setIOReactorConfig(IOReactorConfig.custom()
            .setIoThreadCount(1).build()
        )
    );

Here's how to customize the response timeout:

Rest5ClientBuilder builder = Rest5Client
    .builder(new HttpHost("localhost", 9200))
    .setRequestConfigCallback(r -> r
        .setConnectTimeout(Timeout.of(5000, TimeUnit.MILLISECONDS))
        .setResponseTimeout(Timeout.of(30000, TimeUnit.MILLISECONDS))
        .build()
    );

Nothing was deprecated in this version of the client.