fix(scale): Add skip_create_new_actors to RescheduleOptions (#15493)

src/meta/service/src/scale_service.rs

@@ -210,6 +210,7 @@ impl ScaleService for ScaleServiceImpl {
                     .collect(),
                 RescheduleOptions {
                     resolve_no_shuffle_upstream,
+                    skip_create_new_actors: false,
                 },
                 Some(table_parallelisms),
             )

src/meta/src/barrier/recovery.rs

@@ -671,6 +671,7 @@ impl GlobalBarrierManagerContext {
                     plan,
                     RescheduleOptions {
                         resolve_no_shuffle_upstream: true,
+                        skip_create_new_actors: true,
                     },
                     Some(&mut compared_table_parallelisms),
                 )
@@ -807,6 +808,7 @@ impl GlobalBarrierManagerContext {
                     plan,
                     RescheduleOptions {
                         resolve_no_shuffle_upstream: true,
+                        skip_create_new_actors: true,
                     },
                     Some(&mut compared_table_parallelisms),
                 )

src/meta/src/stream/scale.rs

@@ -439,6 +439,9 @@ pub fn rebalance_actor_vnode(
 pub struct RescheduleOptions {
     /// Whether to resolve the upstream of NoShuffle when scaling. It will check whether all the reschedules in the no shuffle dependency tree are corresponding, and rewrite them to the root of the no shuffle dependency tree.
     pub resolve_no_shuffle_upstream: bool,
+
+    /// Whether to skip creating new actors. If it is true, the scaling-out actors will not be created.
+    pub skip_create_new_actors: bool,
 }
 
 pub type ScaleControllerRef = Arc<ScaleController>;
@@ -1195,13 +1198,15 @@ impl ScaleController {
             }
         }
 
-        self.create_actors_on_compute_node(
-            &ctx.worker_nodes,
-            actor_infos_to_broadcast,
-            node_actors_to_create,
-            broadcast_worker_ids,
-        )
-        .await?;
+        if !options.skip_create_new_actors {
+            self.create_actors_on_compute_node(
+                &ctx.worker_nodes,
+                actor_infos_to_broadcast,
+                node_actors_to_create,
+                broadcast_worker_ids,
+            )
+            .await?;
+        }
 
         // For stream source fragments, we need to reallocate the splits.
         // Because we are in the Pause state, so it's no problem to reallocate
@@ -2813,6 +2818,7 @@ impl GlobalStreamManager {
             reschedules,
             RescheduleOptions {
                 resolve_no_shuffle_upstream: false,
+                skip_create_new_actors: false,
             },
             None,
         )

src/meta/src/stream/stream_manager.rs

@@ -727,6 +727,7 @@ impl GlobalStreamManager {
                     reschedules,
                     RescheduleOptions {
                         resolve_no_shuffle_upstream: false,
+                        skip_create_new_actors: false,
                     },
                     Some(table_parallelism_assignment),
                 )