Revert "Add directIO and bfloat16 for bbq and unquantized HNSW vector field types (#135940)"

This reverts commit 557aeaa.

Author: thecoop

qa/ccs-common-rest/src/yamlRestTest/java/org/elasticsearch/test/rest/yaml/CcsCommonYamlTestSuiteIT.java

@@ -96,8 +96,7 @@ public class CcsCommonYamlTestSuiteIT extends ESClientYamlSuiteTestCase {
         // geohex_grid requires gold license
         .setting("xpack.license.self_generated.type", "trial")
         .feature(FeatureFlag.TIME_SERIES_MODE)
-        .feature(FeatureFlag.SYNTHETIC_VECTORS)
-        .feature(FeatureFlag.GENERIC_VECTOR_FORMAT);
+        .feature(FeatureFlag.SYNTHETIC_VECTORS);
 
     private static ElasticsearchCluster remoteCluster = ElasticsearchCluster.local()
         .name(REMOTE_CLUSTER_NAME)

qa/ccs-common-rest/src/yamlRestTest/java/org/elasticsearch/test/rest/yaml/RcsCcsCommonYamlTestSuiteIT.java

@@ -96,7 +96,6 @@ public class RcsCcsCommonYamlTestSuiteIT extends ESClientYamlSuiteTestCase {
         .setting("xpack.security.remote_cluster_client.ssl.enabled", "false")
         .feature(FeatureFlag.TIME_SERIES_MODE)
         .feature(FeatureFlag.SYNTHETIC_VECTORS)
-        .feature(FeatureFlag.GENERIC_VECTOR_FORMAT)
         .user("test_admin", "x-pack-test-password");
 
     private static ElasticsearchCluster fulfillingCluster = ElasticsearchCluster.local()

qa/smoke-test-multinode/src/yamlRestTest/java/org/elasticsearch/smoketest/SmokeTestMultiNodeClientYamlTestSuiteIT.java

@@ -38,7 +38,6 @@ public class SmokeTestMultiNodeClientYamlTestSuiteIT extends ESClientYamlSuiteTe
         .feature(FeatureFlag.DOC_VALUES_SKIPPER)
         .feature(FeatureFlag.SYNTHETIC_VECTORS)
         .feature(FeatureFlag.RANDOM_SAMPLING)
-        .feature(FeatureFlag.GENERIC_VECTOR_FORMAT)
         .build();
 
     public SmokeTestMultiNodeClientYamlTestSuiteIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {

rest-api-spec/src/yamlRestTest/java/org/elasticsearch/test/rest/ClientYamlTestSuiteIT.java

@@ -38,7 +38,6 @@ public class ClientYamlTestSuiteIT extends ESClientYamlSuiteTestCase {
         .feature(FeatureFlag.DOC_VALUES_SKIPPER)
         .feature(FeatureFlag.SYNTHETIC_VECTORS)
         .feature(FeatureFlag.RANDOM_SAMPLING)
-        .feature(FeatureFlag.GENERIC_VECTOR_FORMAT)
         .build();
 
     public ClientYamlTestSuiteIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/200_dense_vector_docvalue_fields.yml

@@ -123,6 +123,7 @@ setup:
   - match: {hits.hits.0.fields.vector5.0: [1, 111, -13, 15, -128]}
   - match: {hits.hits.0.fields.vector6.0: [-1, 11, 0, 12, 111]}
 
+
   - match: {hits.hits.1._id: "2"}
   - match: {hits.hits.1.fields.name.0: "moose.jpg"}
 
@@ -142,6 +143,7 @@ setup:
   - match: {hits.hits.1.fields.vector4.0: [-1, 50, -1, 1, 120]}
   - match: {hits.hits.1.fields.vector5.0: [1, 111, -13, 15, -128]}
 
+
   - match: {hits.hits.2._id: "3"}
   - match: {hits.hits.2.fields.name.0: "rabbit.jpg"}
 
@@ -159,103 +161,3 @@ setup:
   - close_to: { hits.hits.2.fields.vector2.0.4: { value: -100.0, error: 0.001 } }
 
   - match: {hits.hits.2.fields.vector3.0: [-1, 100, -13, 15, -128]}
-
----
-"dense_vector docvalues with bfloat16":
-  - requires:
-      cluster_features: [ "mapper.vectors.generic_vector_format" ]
-      reason: Needs generic vector support
-  - do:
-      indices.create:
-        index: test-bfloat16
-        body:
-          mappings:
-            properties:
-              name:
-                type: keyword
-              vector7:
-                type: dense_vector
-                element_type: bfloat16
-                dims: 5
-                index: true
-              vector8:
-                type: dense_vector
-                element_type: bfloat16
-                dims: 5
-                index: false
-
-  - do:
-      index:
-        index: test-bfloat16
-        id: "1"
-        body:
-          name: cow.jpg
-          vector7: [230.0, 300.33, -34.8988, 15.555, -200.0]
-          vector8: [130.0, 115.0, -1.02, 15.555, -100.0]
-  - do:
-      index:
-        index: test-bfloat16
-        id: "2"
-        body:
-          name: moose.jpg
-          vector7: [-0.5, 100.0, -13, 14.8, -156.0]
-  - do:
-      index:
-        index: test-bfloat16
-        id: "3"
-        body:
-          name: rabbit.jpg
-          vector8: [130.0, 115.0, -1.02, 15.555, -100.0]
-
-  - do:
-      indices.refresh: {}
-
-  - do:
-      search:
-        _source: false
-        index: test-bfloat16
-        body:
-          docvalue_fields: [name, vector7, vector8]
-          sort: name
-
-  - match: {hits.hits.0._id: "1"}
-  - match: {hits.hits.0.fields.name.0: "cow.jpg"}
-
-  - length: {hits.hits.0.fields.vector7.0: 5}
-  - length: {hits.hits.0.fields.vector8.0: 5}
-
-  - close_to: { hits.hits.0.fields.vector7.0.0: { value: 230.0, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector7.0.1: { value: 300.33, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector7.0.2: { value: -34.8988, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector7.0.3: { value: 15.555, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector7.0.4: { value: -200.0, error: 0.1 } }
-
-  - close_to: { hits.hits.0.fields.vector8.0.0: { value: 130.0, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector8.0.1: { value: 115.0, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector8.0.2: { value: -1.02, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector8.0.3: { value: 15.555, error: 0.1 } }
-  - close_to: { hits.hits.0.fields.vector8.0.4: { value: -100.0, error: 0.1 } }
-
-  - match: {hits.hits.1._id: "2"}
-  - match: {hits.hits.1.fields.name.0: "moose.jpg"}
-
-  - length: {hits.hits.1.fields.vector7.0: 5}
-  - match: {hits.hits.1.fields.vector8: null}
-
-  - close_to: { hits.hits.1.fields.vector7.0.0: { value: -0.5, error: 0.1 } }
-  - close_to: { hits.hits.1.fields.vector7.0.1: { value: 100.0, error: 0.1 } }
-  - close_to: { hits.hits.1.fields.vector7.0.2: { value: -13, error: 0.1 } }
-  - close_to: { hits.hits.1.fields.vector7.0.3: { value: 14.8, error: 0.1 } }
-  - close_to: { hits.hits.1.fields.vector7.0.4: { value: -156.0, error: 0.1 } }
-
-  - match: {hits.hits.2._id: "3"}
-  - match: {hits.hits.2.fields.name.0: "rabbit.jpg"}
-
-  - length: {hits.hits.2.fields.vector8.0: 5}
-  - match: {hits.hits.2.fields.vector7: null}
-
-  - close_to: { hits.hits.2.fields.vector8.0.0: { value: 130.0, error: 0.1 } }
-  - close_to: { hits.hits.2.fields.vector8.0.1: { value: 115.0, error: 0.1 } }
-  - close_to: { hits.hits.2.fields.vector8.0.2: { value: -1.02, error: 0.1 } }
-  - close_to: { hits.hits.2.fields.vector8.0.3: { value: 15.555, error: 0.1 } }
-  - close_to: { hits.hits.2.fields.vector8.0.4: { value: -100.0, error: 0.1 } }