Elasticsearch API client version 8.16.1 does not fully support Java 8

[cfedericovonwernich]

Java API client version

8.16.1

Java version

8.0.422-amzn

Elasticsearch Version

8.4.3

Problem description

When trying to use above configuration AND enabling capturing of search request bodies: https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/opentelemetry.html#_capture_search_request_bodies

Then you get the following exception:

[358DC105] java.lang.NoSuchMethodError: java.nio.ByteBuffer.mark()Ljava/nio/ByteBuffer;
	at co.elastic.clients.transport.instrumentation.OpenTelemetryForElasticsearch$OTelContext.beforeSendingHttpRequest(OpenTelemetryForElasticsearch.java:221)
	at co.elastic.clients.transport.ElasticsearchTransportBase.performRequest(ElasticsearchTransportBase.java:143)
	at co.elastic.clients.elasticsearch.ElasticsearchClient.search(ElasticsearchClient.java:2317)

What seems to be happening:

In Java 8, mark() implementation is inherited from java.nio.Buffer, and it seems on higher versions, java.nio.ByteBuffer has its own implementation of mark method. When compiling this code using the compiler of a higher Java version targeting 1.8, then we get this issue.

https://www.morling.dev/blog/bytebuffer-and-the-dreaded-nosuchmethoderror/ This resource was quite helpful understanding the issue.

The signature we have available using version 8.0.422-amzn is: java.nio.Buffer.mark()Ljava/nio/Buffer; instead of what the library is expecting: java.nio.ByteBuffer.mark()Ljava/nio/ByteBuffer;

Can we get an oficial release using the Java 8 compiler?

[l-trotta]

Hello! Thank you for reporting this and for explaining the situation in depth, this is indeed a bug and something we didn't consider, sorry for the inconvenience. While 8.16 is no longer supported and won't get a patch, all following versions of 8.17 and 8.18 will be built fully targeting Java 8 by adding these lines to our build.gradle file, as suggested in the blog post you kindly provided:

tasks.compileJava {
    options.release.set(8)
}