HappenLee commented on code in PR #44716:
URL: https://github.com/apache/doris/pull/44716#discussion_r1865692262


##########
fe/fe-core/src/main/java/org/apache/doris/planner/RuntimeFilter.java:
##########
@@ -216,9 +218,36 @@ public TRuntimeFilterDesc toThrift() {
         tFilter.setIsBroadcastJoin(isBroadcastJoin);
         tFilter.setHasLocalTargets(hasLocalTargets);
         tFilter.setHasRemoteTargets(hasRemoteTargets);
+
+        boolean hasSerialTargets = false;
         for (RuntimeFilterTarget target : targets) {
             tFilter.putToPlanIdToTargetExpr(target.node.getId().asInt(), 
target.expr.treeToThrift());
+            hasSerialTargets = hasSerialTargets
+                    || (target.node.isSerialOperator() && 
target.node.fragment.useSerialSource(ConnectContext.get()));
         }
+
+        boolean enableSyncFilterSize = ConnectContext.get() != null
+                && 
ConnectContext.get().getSessionVariable().enableSyncRuntimeFilterSize();
+        // there are two cases need merge rf
+        // 1. hasRemoteTargets is true means join type is hash shuffle join 
then rf will

Review Comment:
   `hasRemoteTargets` not means `shuffle join`, maybe `broadcast` 



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