update snapshot_version and mult_version_start when ddl major generates.

src/storage/ddl/ob_ddl_merge_task.cpp

@@ -745,15 +745,21 @@ int ObTabletDDLUtil::update_ddl_table_store(const ObTabletDDLParam &ddl_param,
                                                  ObTabletCommon::NO_CHECK_GET_TABLET_TIMEOUT_US))) {
       LOG_WARN("get tablet failed", K(ret), K(ddl_param));
     } else {
+      const bool is_major_sstable = ddl_param.table_key_.is_major_sstable();
       const int64_t rebuild_seq = ls_handle.get_ls()->get_rebuild_seq();
+      const int64_t snapshot_version = is_major_sstable ? max(ddl_param.snapshot_version_, tablet_handle.get_obj()->get_snapshot_version())
+                                                       : tablet_handle.get_obj()->get_snapshot_version();
+      const int64_t multi_version_start = is_major_sstable ? max(ddl_param.snapshot_version_, tablet_handle.get_obj()->get_multi_version_start())
+                                              : 0;
       ObTabletHandle new_tablet_handle;
       ObUpdateTableStoreParam table_store_param(table_handle,
-                                                tablet_handle.get_obj()->get_snapshot_version(),
+                                                snapshot_version,
-                                                &tablet_handle.get_obj()->get_storage_schema(),
+                                                multi_version_start,
                                                 rebuild_seq,
-                                                ddl_param.table_key_.is_major_sstable(), // update_with_major_flag
+                                                &tablet_handle.get_obj()->get_storage_schema(),
-                                                ddl_param.table_key_.is_major_sstable()); // need report checksum
+                                                is_major_sstable, // update_with_major_flag
-      table_store_param.ddl_info_.keep_old_ddl_sstable_ = !ddl_param.table_key_.is_major_sstable();
+                                                is_major_sstable); // need report checksum
+      table_store_param.ddl_info_.keep_old_ddl_sstable_ = !is_major_sstable;
       table_store_param.ddl_info_.data_format_version_ = ddl_param.data_format_version_;
       table_store_param.ddl_info_.ddl_commit_scn_ = ddl_param.commit_scn_;
       if (OB_FAIL(ls_handle.get_ls()->update_tablet_table_store(ddl_param.table_key_.get_tablet_id(), table_store_param, new_tablet_handle))) {

src/storage/ob_storage_struct.cpp

@@ -290,14 +290,15 @@ ObUpdateTableStoreParam::ObUpdateTableStoreParam(
 ObUpdateTableStoreParam::ObUpdateTableStoreParam(
     const ObTableHandleV2 &table_handle,
     const int64_t snapshot_version,
-    const ObStorageSchema *storage_schema,
+    const int64_t multi_version_start,
     const int64_t rebuild_seq,
+    const ObStorageSchema *storage_schema,
     const bool update_with_major_flag,
     const bool need_report)
   : table_handle_(table_handle),
     snapshot_version_(snapshot_version),
     clog_checkpoint_scn_(),
-    multi_version_start_(0),
+    multi_version_start_(multi_version_start),
     need_report_(need_report),
     storage_schema_(storage_schema),
     rebuild_seq_(rebuild_seq),

src/storage/ob_storage_struct.h

@@ -335,8 +335,9 @@ struct ObUpdateTableStoreParam
   ObUpdateTableStoreParam( // for ddl merge task only
     const ObTableHandleV2 &table_handle,
     const int64_t snapshot_version,
-    const ObStorageSchema *storage_schema,
+    const int64_t multi_version_start,
     const int64_t rebuild_seq,
+    const ObStorageSchema *storage_schema,
     const bool update_with_major_flag,
     const bool need_report = false);