diff --git a/src/storage/ob_partition_range_spliter.cpp b/src/storage/ob_partition_range_spliter.cpp
index ab7b54ecfa..2e37820a3f 100644
--- a/src/storage/ob_partition_range_spliter.cpp
+++ b/src/storage/ob_partition_range_spliter.cpp
@@ -607,9 +607,7 @@ int ObPartitionParallelRanger::split_ranges(
   if (IS_NOT_INIT) {
     ret = OB_NOT_INIT;
     STORAGE_LOG(WARN, "ObPartitionParallelRanger is not init", K(ret));
-  } else if (sample_cnt_ == 0 || parallel_target_count_ == 1
-             || parallel_target_count_ > total_endkey_cnt_ + 1) {
-    // cannot afford specified parallel target count, back into single whole range
+  } else if (sample_cnt_ == 0 || parallel_target_count_ == 1) {
     if (OB_FAIL(construct_single_range(allocator,
                                        store_range_->get_start_key(),
                                        store_range_->get_end_key(),
diff --git a/src/storage/ob_storage_schema.cpp b/src/storage/ob_storage_schema.cpp
index 5074630b89..455447b7e0 100644
--- a/src/storage/ob_storage_schema.cpp
+++ b/src/storage/ob_storage_schema.cpp
@@ -1579,6 +1579,10 @@ void ObStorageSchema::update_column_cnt(const int64_t input_col_cnt)
 {
   column_cnt_ = MAX(column_cnt_, input_col_cnt);
   store_column_cnt_ = MAX(store_column_cnt_, input_col_cnt);
+  if (column_cnt_ != column_array_.count()) {
+    column_info_simplified_ = true;
+    STORAGE_LOG(INFO, "update column cnt", K(column_cnt_), K(store_column_cnt_), K(column_cnt_), K(column_array_.count()));
+  }
 }
 
 } // namespace storage