branch-3.0: [fix](iceberg) fix the iceberg eq-delete filter resize-fill bug. #51253 (#51315)

Cherry-picked from #51253

Co-authored-by: kang <35803862+ghkang98@users.noreply.github.com>

Author: github-actions[bot]

be/src/vec/common/pod_array.h

@@ -392,6 +392,8 @@ class PODArray : public PODArrayBase<sizeof(T), initial_bytes, TAllocator, pad_r
         this->c_end = this->c_start + this->byte_size(n);
     }
 
+    /// 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();
         if (n > old_size) {
@@ -617,6 +619,8 @@ 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);

be/src/vec/exec/format/table/equality_delete.cpp

@@ -56,7 +56,8 @@ 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()) {
@@ -126,7 +127,8 @@ 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) {