I have tried way too many Elasticsearch/Opensearch java rest client versions but running into issues with all of them.

Opensearch – 1.0.0, 1.1.0, 1.2.4

Invalid receiver type interface org.apache.http.Header; not a subtype of implementation type interface org.apache.http.NameValuePair

Elasticsearch Rest high level client – 7.10.2, 7.11.2, 7.12.0

java.lang.NoClassDefFoundError: Could not initialize class org.elasticsearch.client.ml.dataframe.OutlierDetection

Elasticsearch Rest high level client – 7.15.0, 7.17.4

java.lang.NoClassDefFoundError: Could not initialize class org.elasticsearch.client.analytics.InferencePipelineAggregationBuilder

Elasticsearch Rest high level client – 7.13.2

Caused by: java.lang.invoke.LambdaConversionException: Invalid receiver type interface org.apache.http.Header; not a subtype of implementation type interface org.apache.http.NameValuePair

Pretty standard way of loading the dependency

<dependency>
  <groupId>org.elasticsearch.client</groupId>
  <artifactId>elasticsearch-rest-high-level-client</artifactId>
  <version>x.x.x</version>
</dependency>

I’m writing to an opensearch cluster via a spark streaming application. What could be the issue?