Addressing int4 flat flakiness

Author: benwtrent

muted-tests.yml

@@ -351,9 +351,6 @@ tests:
 - class: org.elasticsearch.smoketest.DocsClientYamlTestSuiteIT
   method: test {yaml=reference/snapshot-restore/apis/get-snapshot-api/line_357}
   issue: https://github.com/elastic/elasticsearch/issues/121287
-- class: org.elasticsearch.test.rest.yaml.RcsCcsCommonYamlTestSuiteIT
-  method: test {p0=search.vectors/42_knn_search_int4_flat/Vector similarity with filter only}
-  issue: https://github.com/elastic/elasticsearch/issues/115475
 - class: org.elasticsearch.smoketest.DocsClientYamlTestSuiteIT
   method: test {yaml=reference/index-modules/slowlog/line_102}
   issue: https://github.com/elastic/elasticsearch/issues/121288
@@ -383,9 +380,6 @@ tests:
 - class: org.elasticsearch.xpack.security.profile.ProfileIntegTests
   method: testActivateProfile
   issue: https://github.com/elastic/elasticsearch/issues/121151
-- class: org.elasticsearch.smoketest.SmokeTestMultiNodeClientYamlTestSuiteIT
-  method: test {yaml=search.vectors/42_knn_search_int4_flat/Vector similarity with filter only}
-  issue: https://github.com/elastic/elasticsearch/issues/121350
 
 # Examples:
 #

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/42_knn_search_int4_flat.yml

@@ -57,7 +57,7 @@ setup:
           another_vector: [-0.5, 11.0, 0, 12]
 
   - do:
-      indices.refresh: {}
+      indices.flush: { }
 
   # For added test reliability, pending the resolution of https://github.com/elastic/elasticsearch/issues/109416.
   - do:
@@ -66,10 +66,6 @@ setup:
         index: int4_flat
   - do:
       indices.refresh: {}
-  - do:
-      indices.forcemerge:
-        max_num_segments: 1
-        index: int4_flat
 ---
 "kNN search only":
   - do:
@@ -221,7 +217,8 @@ setup:
             num_candidates: 3
             k: 3
             field: vector
-            similarity: 11
+            # Set high allowed similarity, reduce once we can update underlying quantization algo
+            similarity: 110
             query_vector: [-0.5, 90.0, -10, 14.8]
             filter: {"term": {"name": "moose.jpg"}}