13:54:16,163 (Hibernate Search: Elasticsearch transport thread - 3) DEBUG request:121 - ES client issued a ResponseException - not necessarily a problem
org.elasticsearch.client.ResponseException: method [GET], host [http://localhost:9200], URI [/indexname/_explain/1], status line [HTTP/1.1 400 Bad Request]
{"error":{"root_cause":[{"type":"parsing_exception","reason":"request does not support [stored_fields]","line":1,"col":35}],"type":"parsing_exception","reason":"request does not support [stored_fields]","line":1,"col":35},"status":400}
	at org.elasticsearch.client.RestClient.convertResponse(RestClient.java:253)
	at org.elasticsearch.client.RestClient.access$900(RestClient.java:95)
	at org.elasticsearch.client.RestClient$1.completed(RestClient.java:298)
	at org.elasticsearch.client.RestClient$1.completed(RestClient.java:294)
	at org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:122)
	at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.responseCompleted(DefaultClientExchangeHandlerImpl.java:181)
	at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:448)
	at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:338)
	at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:265)
	at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81)
	at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39)
	at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:114)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:591)
	at java.lang.Thread.run(Thread.java:748)
13:54:16,164 (Hibernate Search: Elasticsearch transport thread - 3) TRACE request:205 - HSEARCH400093: Executed Elasticsearch HTTP GET request to path '/indexname/_explain/1' with query parameters {} and 1 objects in payload in 2ms. Response had status 400 'Bad Request'. Request body: <
{
  "query": {
    "ids": {
      "values": [
        "1"
      ]
    }
  },
  "stored_fields": "__HSEARCH_index"
}
>. Response body: <
{
  "error": {
    "root_cause": [
      {
        "type": "parsing_exception",
        "reason": "request does not support [stored_fields]",
        "line": 1,
        "col": 35
      }
    ],
    "type": "parsing_exception",
    "reason": "request does not support [stored_fields]",
    "line": 1,
    "col": 35
  },
  "status": 400
}
>