Fix for rrf documentation test using a knn retriever (#120112)

Author: pmpailis

docs/reference/search/search-your-data/retrievers-examples.asciidoc

@@ -8,18 +8,25 @@ Learn how to combine different retrievers in these hands-on examples.
 ==== Add example data
 
 To begin with, lets create the `retrievers_example` index, and add some documents to it.
+We will set `number_of_shards=1` for our examples to ensure consistent and reproducible ordering.
 
 [source,console]
 ----
 PUT retrievers_example
 {
+    "settings": {
+        "number_of_shards": 1
+    },
    "mappings": {
        "properties": {
            "vector": {
                "type": "dense_vector",
                "dims": 3,
                "similarity": "l2_norm",
-               "index": true
+               "index": true,
+               "index_options": {
+                    "type": "flat"
+               }
            },
            "text": {
                "type": "text"
@@ -458,6 +465,9 @@ and index a couple of documents.
 ----
 PUT retrievers_example_nested
 {
+    "settings": {
+         "number_of_shards": 1
+     },
     "mappings": {
         "properties": {
             "nested_field": {
@@ -470,7 +480,10 @@ PUT retrievers_example_nested
                         "type": "dense_vector",
                         "dims": 3,
                         "similarity": "l2_norm",
-                        "index": true
+                        "index": true,
+                        "index_options": {
+                            "type": "flat"
+                        }
                     }
                 }
             },
@@ -639,7 +652,7 @@ This would propagate the `inner_hits` defined for the `knn` query to the `rrf` r
                                 "value": 3,
                                 "relation": "eq"
                             },
-                            "max_score": 0.44353113,
+                            "max_score": 0.44444445,
                             "hits": [
                                 {
                                     "_index": "retrievers_example_nested",
@@ -648,7 +661,7 @@ This would propagate the `inner_hits` defined for the `knn` query to the `rrf` r
                                         "field": "nested_field",
                                         "offset": 2
                                     },
-                                    "_score": 0.44353113,
+                                    "_score": 0.44444445,
                                     "fields": {
                                         "nested_field": [
                                             {
@@ -666,7 +679,7 @@ This would propagate the `inner_hits` defined for the `knn` query to the `rrf` r
                                         "field": "nested_field",
                                         "offset": 1
                                     },
-                                    "_score": 0.26567122,
+                                    "_score": 0.21301977,
                                     "fields": {
                                         "nested_field": [
                                             {
@@ -684,7 +697,7 @@ This would propagate the `inner_hits` defined for the `knn` query to the `rrf` r
                                         "field": "nested_field",
                                         "offset": 0
                                     },
-                                    "_score": 0.18478848,
+                                    "_score": 0.16889325,
                                     "fields": {
                                         "nested_field": [
                                             {
@@ -716,7 +729,7 @@ This would propagate the `inner_hits` defined for the `knn` query to the `rrf` r
                                 "value": 1,
                                 "relation": "eq"
                             },
-                            "max_score": 0.32002488,
+                            "max_score": 0.31715825,
                             "hits": [
                                 {
                                     "_index": "retrievers_example_nested",
@@ -725,7 +738,7 @@ This would propagate the `inner_hits` defined for the `knn` query to the `rrf` r
                                         "field": "nested_field",
                                         "offset": 0
                                     },
-                                    "_score": 0.32002488,
+                                    "_score": 0.31715825,
                                     "fields": {
                                         "nested_field": [
                                             {

muted-tests.yml

@@ -189,9 +189,6 @@ tests:
   issue: https://github.com/elastic/elasticsearch/issues/118914
 - class: org.elasticsearch.xpack.security.authc.ldap.ActiveDirectoryRunAsIT
   issue: https://github.com/elastic/elasticsearch/issues/115727
-- class: org.elasticsearch.smoketest.DocsClientYamlTestSuiteIT
-  method: test {yaml=reference/search/search-your-data/retrievers-examples/line_98}
-  issue: https://github.com/elastic/elasticsearch/issues/119155
 - class: org.elasticsearch.xpack.esql.action.EsqlNodeFailureIT
   method: testFailureLoadingFields
   issue: https://github.com/elastic/elasticsearch/issues/118000