diff --git a/src/storage/blocksstable/ob_sstable_meta.cpp b/src/storage/blocksstable/ob_sstable_meta.cpp
index 72e0874f6a..90fac21931 100644
--- a/src/storage/blocksstable/ob_sstable_meta.cpp
+++ b/src/storage/blocksstable/ob_sstable_meta.cpp
@@ -64,7 +64,8 @@ ObSSTableBasicMeta::ObSSTableBasicMeta()
     master_key_id_(0),
     sstable_logic_seq_(0),
     latest_row_store_type_(ObRowStoreType::MAX_ROW_STORE),
-    table_flag_()
+    table_flag_(),
+    root_macro_seq_(0)
 {
   MEMSET(encrypt_key_, 0, share::OB_MAX_TABLESPACE_ENCRYPT_KEY_LENGTH);
 }
diff --git a/src/storage/blocksstable/ob_sstable_meta.h b/src/storage/blocksstable/ob_sstable_meta.h
index 8f48fcd77f..7f02da5c77 100644
--- a/src/storage/blocksstable/ob_sstable_meta.h
+++ b/src/storage/blocksstable/ob_sstable_meta.h
@@ -188,6 +188,7 @@ public:
   common::ObRowStoreType latest_row_store_type_;
   char encrypt_key_[share::OB_MAX_TABLESPACE_ENCRYPT_KEY_LENGTH];
   storage::ObTableFlag table_flag_;
+  int64_t root_macro_seq_; // placeholder, will be used after palf branch merged
   //Add new variable need consider ObSSTableMetaChecker
 };