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Release highlights

These are the important new features and changes in minor releases. Every release also updates the Java API Client to the latest API specification. This includes new APIs and bug fixes in the specification of existing APIs.

For a list of detailed changes, including bug fixes, please see the GitHub project realease notes.

Version 8.17

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No new feature.

Version 8.16

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ElasticsearchClient is now Closeable. Closing a client object also closes the underlying transport - #851

Added option to make the response body available in case of deserialization error- #886.

While it has always been possible to set the log level to trace and have the client print both the json bodies of the requests and responses, it’s often not the best solution because of the large amount of information printed.

To enable the feature:

RestClientOptions options = new RestClientOptions(RequestOptions.DEFAULT, true);
ElasticsearchTransport transport = new RestClientTransport(restClient, new JacksonJsonpMapper(), options);
ElasticsearchClient esClientWithOptions = new ElasticsearchClient(transport);

To retrieve the original body from the TransportException that gets thrown in case of deserialization errors:

try{
    // some code that returns faulty json
}
catch (TransportException ex){
    try (RepeatableBodyResponse repeatableResponse = (RepeatableBodyResponse) ex.response()) {
        BinaryData body = repeatableResponse.body();
    }
}

Version 8.15

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New Connector API available
Fixed bug in BulkIngester - #830
Various bug fixes, among which are #844, #847

Changed builders for queries that use generic types, for example:

Old RangeQuery:

RangeQuery ra = RangeQuery.of(r -> r  // no distinction between various types (date, term, number)
    .field("day")
    .gte(JsonData.of("2024-06-20"))   // must use custom json for fields because there's no defined type
    .lte(JsonData.of("2024-07-05"))
    .boost(1.0F)
    .format("yyyy-MM-dd")
    .relation(RangeRelation.Contains));

New RangeQuery:

RangeQuery ra = RangeQuery.of(r -> r
    .date(d -> d             // choose query type before
        .field("day")
        .gte("20-06-24")    // field now only accepts valid type for the specified query
        .lte("20-07-24")
        .boost(1.0F)
        .format("yyyy-MM-dd")
        .relation(RangeRelation.Contains)));

Version 8.14

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No new feature.

Version 8.13

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Add ES|QL helpers - #763
Add an example SpringBoot application - #737

Version 8.12

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No new feature.

Version 8.11

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No new feature.

Version 8.10

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Add instrumentation API and native OpenTelemetry implementation - #588, docs

Version 8.9

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Refactor RestClientTransport to allow using other http client libraries - #584

Version 8.8

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Throw a TransportException when an error response cannot be parsed - #579
Speed up URL path encoding and remove dependency on httpclient - #576
Add buffered lookahead and JsonData implementation for Jackson - #489, #567
Expose additional BulkIngester metrics - #513
Allow unparsed binary data to be used for ingestion - #508

Version 8.7

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Add BulkIngester helper - #474, #513, docs
Allow unparsed binary data to be used for ingestion - #508, docs
Add convenience method BooleanQuery.hasClauses() - #525

Version 8.6

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Allow using java.lang.reflect.Type in addition to java.lang.Class to define application types for deserialization - #438
Add buffered lookahead for Jackson to speed up union deserialization - #489
Cache the result of JsonProvider.provider() - #485

Version 8.5

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Add support for API endpoints that return binary content, such as the Vector tile API - #434
Add support for plugin-defined custom components - #370, #371
Add SSL setup helper class and documentation - #390

Version 8.4

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Add troubleshooting documentation on MissingRequiredPropertyException - #301
Allow serializing aggregations without typed keys. This is useful in scenarios where the Java application is used as a proxy and the responses are sent back to its client - #316

Version 8.3

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Add toString() implementation to all value classes - #269

Version 8.2

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Add the withJson() method to all builder classes - #200
Add troubleshooting docs for jakarta-json and build systems like Spring - #215
Improve JSON mapping errors by adding location and property path in the exception message - #237

Version 8.1

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Add documentation for HLRC’s compatibility mode with Elasticsearch 8.x - #230

Version 8.0

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Change the JSON-P implementation from Glassfish to Parsson - #63
Accept null values in lists - #68

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