Remove blocking during closing the chuld process

go/internal/feast/transformation/transformation.go

@@ -169,11 +169,8 @@ func CallTransformations(
 				transformResp <- TransformChannel{outRecord, nil}
 			}
 		}
+		p.Close()
 	})
-	err := proc.Close()
-	if err != nil {
-		return nil, err
-	}
 	resp := <-transformResp
 	if resp.err != nil {
 		return nil, resp.err

go/internal/feast/transformation/transformation_test.go

@@ -0,0 +1,58 @@
+package transformation
+
+import (
+	"github.com/apache/arrow/go/v8/arrow"
+	"github.com/feast-dev/feast/go/internal/feast/model"
+	"github.com/feast-dev/feast/go/protos/feast/core"
+	prototypes "github.com/feast-dev/feast/go/protos/feast/types"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func createFeature(name string, valueType prototypes.ValueType_Enum) *core.FeatureSpecV2 {
+	return &core.FeatureSpecV2{
+		Name:      name,
+		ValueType: valueType,
+	}
+}
+
+func createOnDemandFeatureView(name string, featureSources map[string][]*core.FeatureSpecV2, features ...*core.FeatureSpecV2) *model.OnDemandFeatureView {
+	sources := make(map[string]*core.OnDemandSource)
+	for viewName, features := range featureSources {
+		sources[viewName] = &core.OnDemandSource{
+			Source: &core.OnDemandSource_FeatureViewProjection{
+				FeatureViewProjection: &core.FeatureViewProjection{
+					FeatureViewName: viewName,
+					FeatureColumns:  features,
+					JoinKeyMap:      map[string]string{},
+				},
+			},
+		}
+	}
+
+	proto := &core.OnDemandFeatureView{
+		Spec: &core.OnDemandFeatureViewSpec{
+			Name:     name,
+			Sources:  sources,
+			Features: features,
+		},
+	}
+	return model.NewOnDemandFeatureViewFromProto(proto)
+}
+
+func TestCallTransformationsFailsWithError(t *testing.T) {
+	featASpec := createFeature("featA", prototypes.ValueType_INT32)
+	featBSpec := createFeature("featB", prototypes.ValueType_INT32)
+	onDemandFeature1 := createFeature("featC", prototypes.ValueType_FLOAT)
+	odfv := createOnDemandFeatureView("odfv",
+		map[string][]*core.FeatureSpecV2{"viewA": {featASpec}, "viewB": {featBSpec}},
+		onDemandFeature1)
+
+	retrievedFeatures := make(map[string]arrow.Array)
+	requestContextArrow := make(map[string]arrow.Array)
+
+	_, err := CallTransformations(odfv, retrievedFeatures, requestContextArrow, func(ODFVName string, inputArrPtr, inputSchemaPtr, outArrPtr, outSchemaPtr uintptr, fullFeatureNames bool) int {
+		return 1
+	}, 1, false)
+	assert.Error(t, err)
+}