elasticsearch DocWriteResponse type is null

DocWriteResponse 에 type이 _doc으로 안 들어가고 null이 되어서 NPE가 나는 현상

아래처럼 호환되는 기본 헤더를 설정해야된다.

HttpHeaders defaultHeaders = new HttpHeaders();
defaultHeaders.add("Accept", "application/vnd.elasticsearch+json;compatible-with=7");
defaultHeaders.add("Content-Type", "application/vnd.elasticsearch+json;compatible-with=7");

ClientConfiguration clientConfiguration = ClientConfiguration.builder()
	.connectedTo("localhost:9200")
        .withDefaultHeaders(defaultHeaders)
	.build();

 

참고

https://github.com/spring-projects/spring-data-elasticsearch/issues/2084

Mismatch versions Client and Cluster · Issue #2084 · spring-projects/spring-data-elasticsearch