[BUG] I am getting below ERROR while trying to fetch indices from opensearch

[lijie123bes]

Describe the bug

Exception in thread "main" java.lang.BootstrapMethodError: bootstrap method initialization exception at java.base/java.lang.invoke.BootstrapMethodInvoker.invoke(BootstrapMethodInvoker.java:194) at java.base/java.lang.invoke.CallSite.makeSite(CallSite.java:307) at java.base/java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:258) at java.base/java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:248) at org.opensearch.client.RestClient.convertResponse(RestClient.java:361) at org.opensearch.client.RestClient.performRequest(RestClient.java:345) at org.opensearch.client.RestClient.performRequest(RestClient.java:320) at org.opensearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1918) at org.opensearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1901) at org.opensearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1865) at org.opensearch.client.IndicesClient.get(IndicesClient.java:768) at com.QueriesTest.main(QueriesTest.java:99) 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 at java.base/java.lang.invoke.AbstractValidatingLambdaMetafactory.validateMetafactoryArgs(AbstractValidatingLambdaMetafactory.java:254) at java.base/java.lang.invoke.LambdaMetafactory.metafactory(LambdaMetafactory.java:328) at java.base/java.lang.invoke.BootstrapMethodInvoker.invoke(BootstrapMethodInvoker.java:127) ... 11 more

Related component

Other

To Reproduce

static RestHighLevelClient client = new RestHighLevelClient(RestClient.builder(new HttpHost(domainUrl, port, protocol)));

//QueriesTest.java:99
GetIndexRequest request = new GetIndexRequest(indexName);
GetIndexResponse response = client.indices().get(request, RequestOptions.DEFAULT);

Expected behavior

no error

Additional Details

Versions: jdk 11
plugins { id:'org.springframework.boot' version '1.5.6.RELEASE' }
opensearch-java:2.6.0 opensearch-rest-high-level-client:2.9.0

[VachaShah]

@lijie123bes Can you check what versions of org.apache.httpcomponents.httpclient and org.apache.httpcomponents.httpcore are you using? The rest high level client uses 4.5.14 and 4.4.16 respectively but if there are any conflicts in your classpath for their versions?

[peternied]

[Triage - attendees 1 2]
@lijie123bes Thanks for filing