diff --git a/src/storage/access/ob_sstable_row_whole_scanner.cpp b/src/storage/access/ob_sstable_row_whole_scanner.cpp
index d724d1507c..76da6d8cfd 100644
--- a/src/storage/access/ob_sstable_row_whole_scanner.cpp
+++ b/src/storage/access/ob_sstable_row_whole_scanner.cpp
@@ -426,6 +426,9 @@ int ObSSTableRowWholeScanner::open_macro_block()
                   scan_handle.is_right_border_))) {
         LOG_WARN("failed to open micro block iter", K(ret), K(scan_handle.macro_io_handle_));
       } else {
+        if (iter_macro_cnt_ < 10) {
+          FLOG_INFO("iter macro block id", K(scan_handle.macro_block_desc_.macro_block_id_), K(iter_macro_cnt_++), K(sstable_));
+        }
         break;
       }
     }
diff --git a/src/storage/access/ob_sstable_row_whole_scanner.h b/src/storage/access/ob_sstable_row_whole_scanner.h
index 5767482a45..5f3eeb2ae8 100644
--- a/src/storage/access/ob_sstable_row_whole_scanner.h
+++ b/src/storage/access/ob_sstable_row_whole_scanner.h
@@ -62,7 +62,8 @@ public:
       micro_scanner_(nullptr),
       is_inited_(false),
       last_micro_block_recycled_(false),
-      last_mvcc_row_already_output_(false)
+      last_mvcc_row_already_output_(false),
+      iter_macro_cnt_(0)
   {}
 
   virtual ~ObSSTableRowWholeScanner();
@@ -120,6 +121,7 @@ private:
   bool is_inited_;
   bool last_micro_block_recycled_;
   bool last_mvcc_row_already_output_;
+  int64_t iter_macro_cnt_;
 };
 
 }