enhance: always enable streaming service (#40253)

issue: #38399

Signed-off-by: chyezh <chyezh@outlook.com>

cmd/main.go

@@ -28,10 +28,15 @@ import (
 	"github.com/milvus-io/milvus/cmd/asan"
 	"github.com/milvus-io/milvus/cmd/milvus"
 	"github.com/milvus-io/milvus/internal/util/sessionutil"
+	"github.com/milvus-io/milvus/internal/util/streamingutil"
 	"github.com/milvus-io/milvus/pkg/v2/util/paramtable"
 )
 
 func main() {
+	// after 2.6.0, we enable streaming service by default.
+	// TODO: after remove all streamingutil.IsStreamingServiceEnabled(), we can remove this code.
+	streamingutil.SetStreamingServiceEnabled()
+
 	defer asan.LsanDoLeakCheck()
 	idx := slices.Index(os.Args, "--run-with-subprocess")
 

cmd/milvus/util.go

@@ -149,7 +149,6 @@ func GetMilvusRoles(args []string, flags *flag.FlagSet) *roles.MilvusRoles {
 	case typeutil.IndexNodeRole:
 		role.EnableIndexNode = true
 	case typeutil.StreamingNodeRole:
-		streamingutil.MustEnableStreamingService()
 		streamingutil.EnableEmbededQueryNode()
 		role.EnableStreamingNode = true
 		role.EnableQueryNode = true
@@ -206,10 +205,6 @@ func formatFlags(args []string, flags *flag.FlagSet) (alias string, enableRootCo
 	flags.BoolVar(&enableProxy, typeutil.ProxyRole, false, "enable proxy node")
 	flags.BoolVar(&enableStreamingNode, typeutil.StreamingNodeRole, false, "enable streaming node")
 
-	if enableStreamingNode {
-		streamingutil.MustEnableStreamingService()
-	}
-
 	serverType := args[2]
 	if serverType == typeutil.EmbeddedRole {
 		flags.SetOutput(io.Discard)

internal/util/streamingutil/env.go

@@ -14,6 +14,14 @@ func IsStreamingServiceEnabled() bool {
 	return os.Getenv(MilvusStreamingServiceEnabled) == "1"
 }
 
+// SetStreamingServiceEnabled set the env that indicates whether the streaming service is enabled.
+func SetStreamingServiceEnabled() {
+	err := os.Setenv(MilvusStreamingServiceEnabled, "1")
+	if err != nil {
+		panic(err)
+	}
+}
+
 // MustEnableStreamingService panics if the streaming service is not enabled.
 func MustEnableStreamingService() {
 	if !IsStreamingServiceEnabled() {

internal/util/streamingutil/test_env.go

@@ -5,14 +5,6 @@ package streamingutil
 
 import "os"
 
-// SetStreamingServiceEnabled set the env that indicates whether the streaming service is enabled.
-func SetStreamingServiceEnabled() {
-	err := os.Setenv(MilvusStreamingServiceEnabled, "1")
-	if err != nil {
-		panic(err)
-	}
-}
-
 // UnsetStreamingServiceEnabled unsets the env that indicates whether the streaming service is enabled.
 func UnsetStreamingServiceEnabled() {
 	err := os.Setenv(MilvusStreamingServiceEnabled, "0")

scripts/start_cluster.sh

@@ -50,3 +50,6 @@ nohup ./bin/milvus run indexcoord  --run-with-subprocess  > /tmp/indexcoord.log
 
 echo "Starting indexnode..."
 nohup ./bin/milvus run indexnode  --run-with-subprocess > /tmp/indexnode.log 2>&1 &
+
+echo "Starting streamingnode..."
+nohup ./bin/milvus run streamingnode --run-with-subprocess > /tmp/streamingnode.log 2>&1 &