knn retreiver to support inner_hits

[mayya-sharipova]

Description

Currently knn retriever doesn't support inner_hits parameter.
But knn search does support inner_hits.

Make knn retriever to support inner_hits as well.

[elasticsearchmachine]

Pinging @elastic/es-search-relevance (Team:Search Relevance)

[jili0819]

KnnQuery does not contain inner_hits. When is it supported? thanks

[benwtrent]

@jili0819 KnnQuery (e.g. query: {nested: {knn:}}) supports inner hits. You simply ask for them at the nested query level.

Maybe I am misunderstanding your question.

[jili0819]

@jili0819 KnnQuery (e.g. query: {nested: {knn:}}) supports inner hits. You simply ask for them at the nested query level.

Maybe I am misunderstanding your question.

golang sdk knn query not supported inner_hits

[jili0819]

@benwtrent

[benwtrent]

golang sdk knn query not supported inner_hits

You supply the inner hits to the nested query, not to the knn query.

@jili0819

{
  "query": {
    "nested": {
      "path": <NESTED_PATH,
      "query": {
        "knn": {...}
      },
      "inner_hits": {...}
    }
  }
}