Java High Level Rest Client Cross cluster search

how to search in multi cluster (cross cluster search) by using java high level rest client?

Welcome!

Search the same way you are searching with local indices.

https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-cross-cluster-search.html

Hi,
I am trying to develop a spring boot based elasticsearch project and I am trying to use Java High Level Rest Client in the same.
I am initializing the client like this:

RestHighLevelClient client = new RestHighLevelClient(RestClient.builder(HTTP_LOCAL_HOSTS));
BoolQueryBuilder query = QueryBuilders.boolQuery().must(QueryBuilders.termQuery("field", value));
SearchSourceBuilder builder = new SearchSourceBuilder();
builder.query(query);

SearchRequest req = new SearchRequest("test_index1");
req.source(builder);
return client.search(req, RequestOptions.DEFAULT);

"HTTP_LOCAL_HOSTS" is local cluster nodes and my config for remote cluster correctly.
"test_index1" exist in remote cluster and have multiple records with "field: value" but this query don't return result.
Please help me out.

You need to provide a more concrete example, like a document which should match, the mapping, the value you are passing to the term query...

Also test_index1 means that you are searching in the local cluster.