diff --git a/src/sql/engine/basic/ob_chunk_datum_store.h b/src/sql/engine/basic/ob_chunk_datum_store.h
index faafb87122..151c5ca2ac 100644
--- a/src/sql/engine/basic/ob_chunk_datum_store.h
+++ b/src/sql/engine/basic/ob_chunk_datum_store.h
@@ -673,6 +673,7 @@ public:
   class IterationAge
   {
   public:
+    IterationAge() : age_(0) {}
     int64_t get(void) const { return age_; }
     void inc(void) { age_ += 1; }
   private:
diff --git a/src/sql/engine/join/ob_hash_join_op.cpp b/src/sql/engine/join/ob_hash_join_op.cpp
index 558ac28dfc..9aea7bb044 100644
--- a/src/sql/engine/join/ob_hash_join_op.cpp
+++ b/src/sql/engine/join/ob_hash_join_op.cpp
@@ -1250,8 +1250,8 @@ int ObHashJoinOp::build_hash_table_for_nest_loop(int64_t &num_left_rows)
     int64_t memory_bound = std::max(remain_data_memory_size_,
                                     hj_batch->get_chunk_row_store().get_max_blk_size());
     const int64_t row_bound = hash_table.nbuckets_ / 2;
-    ObChunkDatumStore::IterationAge iter_age;
-    hj_batch->set_iteration_age(iter_age);
+    hj_batch->set_iteration_age(iter_age_);
+    iter_age_.inc();
     while (OB_SUCC(ret)) {
       int64_t read_size = 0;
       if (OB_FAIL(hj_batch->get_next_batch(left_stored_rows,
@@ -1740,8 +1740,8 @@ int ObHashJoinOp::build_hash_table_in_memory(int64_t &num_left_rows)
     // do nothing
   } else {
     PartHashJoinTable &hash_table = *cur_hash_table_;
-    ObChunkDatumStore::IterationAge iter_age;
-    hj_batch->set_iteration_age(iter_age);
+    hj_batch->set_iteration_age(iter_age_);
+    iter_age_.inc();
     while (OB_SUCC(ret)) {
       int64_t read_size = 0;
       if (OB_FAIL(hj_batch->get_next_batch(left_stored_rows,
diff --git a/src/sql/engine/join/ob_hash_join_op.h b/src/sql/engine/join/ob_hash_join_op.h
index 4e28b708ee..5459727cd7 100644
--- a/src/sql/engine/join/ob_hash_join_op.h
+++ b/src/sql/engine/join/ob_hash_join_op.h
@@ -1269,6 +1269,7 @@ private:
   */
   bool skip_left_null_;
   bool skip_right_null_;
+  ObChunkDatumStore::IterationAge iter_age_;
 };
 
 inline int ObHashJoinOp::init_mem_context(uint64_t tenant_id)