diff --git a/src/sql/engine/sort/ob_sort_op_impl.cpp b/src/sql/engine/sort/ob_sort_op_impl.cpp
index b0d04bc4b7..57d5f7b041 100644
--- a/src/sql/engine/sort/ob_sort_op_impl.cpp
+++ b/src/sql/engine/sort/ob_sort_op_impl.cpp
@@ -1421,12 +1421,9 @@ int ObSortOpImpl::prepare_bucket_array(ArrayType *&buckets, uint64_t bucket_num)
       SQL_ENG_LOG(WARN, "failed to init bucket", K(ret), K(bucket_num));
     }
   } else {
-    int64_t max_bucket_cnt  = buckets->get_capacity();
-    if (max_bucket_cnt < bucket_num) {
-      buckets->reuse();
-      if (OB_FAIL(buckets->init(bucket_num))) {
-        LOG_WARN("failed to init bucket array", K(ret), K(bucket_num));
-      }
+    buckets->reuse();
+    if (OB_FAIL(buckets->init(bucket_num))) {
+      LOG_WARN("failed to init bucket array", K(ret), K(bucket_num));
     }
   }
   return ret;
diff --git a/src/sql/engine/sort/ob_sort_vec_op_impl.h b/src/sql/engine/sort/ob_sort_vec_op_impl.h
index 7052e67d03..a2d669a30c 100644
--- a/src/sql/engine/sort/ob_sort_vec_op_impl.h
+++ b/src/sql/engine/sort/ob_sort_vec_op_impl.h
@@ -381,12 +381,9 @@ protected:
         SQL_ENG_LOG(WARN, "failed to init bucket", K(ret), K(bucket_num));
       }
     } else {
-      int64_t max_bucket_cnt = buckets->get_capacity();
-      if (max_bucket_cnt < bucket_num) {
-        buckets->reuse();
-        if (OB_FAIL(buckets->init(bucket_num))) {
-          LOG_WARN("failed to init bucket array", K(ret), K(bucket_num));
-        }
+      buckets->reuse();
+      if (OB_FAIL(buckets->init(bucket_num))) {
+        LOG_WARN("failed to init bucket array", K(ret), K(bucket_num));
       }
     }
     return ret;