diff --git a/be/src/vec/common/pod_array.h b/be/src/vec/common/pod_array.h
index 850dbf03800e02..3a92c6acd3c5b4 100644
--- a/be/src/vec/common/pod_array.h
+++ b/be/src/vec/common/pod_array.h
@@ -460,6 +460,8 @@ class PODArray : public PODArrayBase<sizeof(T), initial_bytes, TAllocator, pad_r
         this->c_end = this->c_start + new_size;
     }
 
+    /// reset the array capacity
+    /// fill the new additional elements using the value
     void resize_fill(size_t n, const T& value) {
         size_t old_size = this->size();
         const auto new_size = this->byte_size(n);
@@ -689,6 +691,8 @@ class PODArray : public PODArrayBase<sizeof(T), initial_bytes, TAllocator, pad_r
         }
     }
 
+    /// reset the array capacity
+    /// replace the all elements using the value
     void assign(size_t n, const T& x) {
         this->resize(n);
         std::fill(begin(), end(), x);
diff --git a/be/src/vec/exec/format/table/equality_delete.cpp b/be/src/vec/exec/format/table/equality_delete.cpp
index 28d0e2519dd60b..98924d045a163a 100644
--- a/be/src/vec/exec/format/table/equality_delete.cpp
+++ b/be/src/vec/exec/format/table/equality_delete.cpp
@@ -60,7 +60,8 @@ Status SimpleEqualityDelete::filter_data_block(Block* data_block) {
     if (_filter == nullptr) {
         _filter = std::make_unique<IColumn::Filter>(rows, 0);
     } else {
-        _filter->resize_fill(rows, 0);
+        // reset the array capacity and fill all elements using the 0
+        _filter->assign(rows, UInt8(0));
     }
 
     if (column_and_type->column->is_nullable()) {
@@ -132,7 +133,8 @@ Status MultiEqualityDelete::filter_data_block(Block* data_block) {
     if (_filter == nullptr) {
         _filter = std::make_unique<IColumn::Filter>(rows, 1);
     } else {
-        _filter->resize_fill(rows, 1);
+        //reset the array capacity and fill all elements using the 0
+        _filter->assign(rows, UInt8(1));
     }
     auto* filter_data = _filter->data();
     for (size_t i = 0; i < rows; ++i) {