diff --git a/be/src/exprs/bloom_filter_func.h b/be/src/exprs/bloom_filter_func.h
index 54ad7502810484..674a429581643b 100644
--- a/be/src/exprs/bloom_filter_func.h
+++ b/be/src/exprs/bloom_filter_func.h
@@ -157,19 +157,18 @@ class BloomFilterFuncBase : public RuntimeFilterFuncBase {
             return Status::InternalError("bloomfilter_func is nullptr");
         }
         if (bloomfilter_func->_bloom_filter == nullptr) {
-            return Status::InternalError("bloomfilter_func->_bloom_filter is nullptr");
+            return Status::InternalError(
+                    "bloomfilter_func->_bloom_filter is nullptr, bloomfilter_func->inited: {}",
+                    bloomfilter_func->_inited);
         }
         // If `_inited` is false, there is no memory allocated in bloom filter and this is the first
         // call for `merge` function. So we just reuse this bloom filter, and we don't need to
         // allocate memory again.
         if (!_inited) {
-            auto* other_func = static_cast<BloomFilterFuncBase*>(bloomfilter_func);
             if (_bloom_filter != nullptr) {
-                return Status::InternalError("_bloom_filter must is nullptr");
+                return Status::InternalError("_bloom_filter must is nullptr, inited: {}", _inited);
             }
-            _bloom_filter = bloomfilter_func->_bloom_filter;
-            _bloom_filter_alloced = other_func->_bloom_filter_alloced;
-            _inited = true;
+            light_copy(bloomfilter_func);
             return Status::OK();
         }
         auto* other_func = static_cast<BloomFilterFuncBase*>(bloomfilter_func);
@@ -207,7 +206,8 @@ class BloomFilterFuncBase : public RuntimeFilterFuncBase {
 
     bool contain_null() const {
         if (!_bloom_filter) {
-            throw Exception(ErrorCode::INTERNAL_ERROR, "_bloom_filter is nullptr");
+            throw Exception(ErrorCode::INTERNAL_ERROR, "_bloom_filter is nullptr, inited: {}",
+                            _inited);
         }
         return _bloom_filter->contain_null();
     }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
index 115614a41873a6..f977c3ccb05f17 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
@@ -1202,10 +1202,10 @@ public enum IgnoreSplitType {
     @VariableMgr.VarAttr(name = RUNTIME_FILTER_TYPE, fuzzy = true, needForward = true)
     private int runtimeFilterType = 12;
 
-    @VariableMgr.VarAttr(name = RUNTIME_FILTER_MAX_IN_NUM, needForward = true)
+    @VariableMgr.VarAttr(name = RUNTIME_FILTER_MAX_IN_NUM, needForward = true, fuzzy = true)
     private int runtimeFilterMaxInNum = 1024;
 
-    @VariableMgr.VarAttr(name = ENABLE_SYNC_RUNTIME_FILTER_SIZE, needForward = true)
+    @VariableMgr.VarAttr(name = ENABLE_SYNC_RUNTIME_FILTER_SIZE, needForward = true, fuzzy = true)
     private boolean enableSyncRuntimeFilterSize = true;
 
     @VariableMgr.VarAttr(name = ENABLE_PARALLEL_RESULT_SINK, needForward = true, fuzzy = true)
@@ -1456,7 +1456,7 @@ public void setEnableLeftZigZag(boolean enableLeftZigZag) {
     @VariableMgr.VarAttr(name = BROADCAST_HASHTABLE_MEM_LIMIT_PERCENTAGE, needForward = true)
     private double broadcastHashtableMemLimitPercentage = 0.2;
 
-    @VariableMgr.VarAttr(name = ENABLE_RUNTIME_FILTER_PRUNE, needForward = true)
+    @VariableMgr.VarAttr(name = ENABLE_RUNTIME_FILTER_PRUNE, needForward = true, fuzzy = true)
     public boolean enableRuntimeFilterPrune = true;
 
     /**