diff --git a/src/storage/access/ob_single_merge.cpp b/src/storage/access/ob_single_merge.cpp
index b0fce131b..11477b170 100644
--- a/src/storage/access/ob_single_merge.cpp
+++ b/src/storage/access/ob_single_merge.cpp
@@ -253,6 +253,7 @@ int ObSingleMerge::inner_get_next_row(ObDatumRow &row)
     access_ctx_->query_flag_.set_not_use_row_cache();
     nop_pos_.reset();
     full_row_.count_ = 0;
+    full_row_.row_flag_.reset();
     full_row_.row_flag_.set_flag(ObDmlFlag::DF_NOT_EXIST);
     full_row_.snapshot_version_ = 0L;
     access_ctx_->use_fuse_row_cache_ = enable_fuse_row_cache;
diff --git a/src/storage/access/ob_sstable_multi_version_row_iterator.cpp b/src/storage/access/ob_sstable_multi_version_row_iterator.cpp
index feef868d3..f9f322adc 100644
--- a/src/storage/access/ob_sstable_multi_version_row_iterator.cpp
+++ b/src/storage/access/ob_sstable_multi_version_row_iterator.cpp
@@ -81,6 +81,7 @@ int ObSSTableMultiVersionRowGetter::inner_open(
     } else if (OB_FAIL(not_exist_row_.init(*access_ctx.get_range_allocator(), iter_param.get_out_col_cnt()))) {
         LOG_WARN("fail to init datum row", K(ret));
     } else {
+      not_exist_row_.row_flag_.reset();
       not_exist_row_.row_flag_.set_flag(ObDmlFlag::DF_NOT_EXIST);
     }
   }
@@ -205,6 +206,7 @@ int ObSSTableMultiVersionRowMultiGetter::inner_open(
       } else if (OB_FAIL(not_exist_row_.init(*access_ctx.get_range_allocator(), iter_param.get_out_col_cnt()))) {
         LOG_WARN("fail to init datum row", K(ret));
       } else {
+        not_exist_row_.row_flag_.reset();
         not_exist_row_.row_flag_.set_flag(ObDmlFlag::DF_NOT_EXIST);
       }
     }
diff --git a/src/storage/blocksstable/ob_micro_block_row_getter.cpp b/src/storage/blocksstable/ob_micro_block_row_getter.cpp
index 0def26a73..772da2a98 100644
--- a/src/storage/blocksstable/ob_micro_block_row_getter.cpp
+++ b/src/storage/blocksstable/ob_micro_block_row_getter.cpp
@@ -410,6 +410,7 @@ int ObMicroBlockRowGetter::get_not_exist_row(const ObDatumRowkey &rowkey, const
       LOG_WARN("fail to reserve datum row", K(ret), KPC(read_info));
     } else {
       row_.count_ = rowkey.get_datum_cnt();
+      row_.row_flag_.reset();
       row_.row_flag_.set_flag(ObDmlFlag::DF_NOT_EXIST);
       //TODO maybe we do not need to copy the rowkey datum
       for (int64_t i = 0; i < rowkey.get_datum_cnt(); i++) {