OpenSearch 1.3 k-NN search with filtering on nested fields
In OpenSearch 2.13, this is supported: https://opensearch.org/docs/2.13/search-plugins/knn/nested-search-knn/#k-nn-search-with-filtering-on-nested-fields
In OpenSearch 2.13, this is supported: https://opensearch.org/docs/2.13/search-plugins/knn/nested-search-knn/#k-nn-search-with-filtering-on-nested-fields