Add support of BinaryFieldValues for non _source primitive array indexing

CHANGELOG.md

@@ -10,6 +10,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Add tooling_skip field option to preserve manually-maintained protobuf fields ([#378](https://github.com/opensearch-project/opensearch-protobufs/pull/378))
 - Test Coverage Improvements ([#380](https://github.com/opensearch-project/opensearch-protobufs/pull/380))
 - Add protobuf generation documentation and remove unused BUILD dependency ([#379](https://github.com/opensearch-project/opensearch-protobufs/pull/379))
+- Add support of BinaryFieldValues for non _source primitive array indexing ([#1035](https://github.com/opensearch-project/opensearch-api-specification/pull/1035)) 
 
 ### Changed
 

protos/schemas/common.proto

@@ -887,6 +887,9 @@ message BulkRequestBody {
 
   // [optional]
   optional bytes object = 3;
+
+  // Map of fully-qualified field path -> typed value.
+  map<string, BinaryFieldValue> field_values = 4 [(tooling_skip) = true];
 }
 
 message OperationContainer {
@@ -2823,6 +2826,45 @@ message HitMatchedQueries {
   }
 }
 
+message BinaryFieldValue {
+  oneof binary_field_value {
+    BytesValue bytes_value = 1;
+
+    FloatArrayValue float_array_value = 2;
+
+  }
+}
+
+message BytesValue {
+
+  bytes bytes = 1;
+}
+
+message FloatArrayValue {
+  oneof float_array_value {
+    // fast path (4 * dimension bytes, little-endian)
+    FloatBinaryLE binary_le = 1;
+
+    // simple path, packed array
+    FloatList values = 2;
+
+  }
+}
+
+message FloatBinaryLE {
+
+  bytes bytes_le = 1;
+
+  // Vector dimension
+  int32 dimension = 2;
+}
+
+message FloatList {
+
+  repeated float values = 1;
+}
+
+
 message BoostingQuery {
 
   // Floating point number used to decrease or increase the relevance scores of the query. Boost values are relative to the default value of 1.0. A boost value between 0 and 1.0 decreases the relevance score. A value greater than 1.0 increases the relevance score.
@@ -3264,4 +3306,4 @@ message GeneralNumber {
 enum NullValue {
   NULL_VALUE_UNSPECIFIED = 0;
   NULL_VALUE_NULL = 1;
-}
+}