diff --git a/src/storage/ls/ob_ls_tablet_service.cpp b/src/storage/ls/ob_ls_tablet_service.cpp
index b1a74d1c66..d93b23c13c 100755
--- a/src/storage/ls/ob_ls_tablet_service.cpp
+++ b/src/storage/ls/ob_ls_tablet_service.cpp
@@ -1972,25 +1972,7 @@ int ObLSTabletService::create_tablet(
   table_store_flag.set_with_major_sstable();
   tablet_handle.reset();
 
-  // ddl schema version defense
-  if (table_schema.is_index_table()) {
-    const int64_t table_schema_version = table_schema.get_schema_version();
-    ObTenantFreezeInfoMgr::FreezeInfo freeze_info;
-
-    if (OB_FAIL(MTL_CALL_FREEZE_INFO_MGR(get_freeze_info_behind_snapshot_version, snapshot_version, freeze_info))) {
-      if (OB_ENTRY_NOT_EXIST != ret) {
-        LOG_WARN("failed to get freeze info behind snapshot version", K(ret), K(snapshot_version));
-      } else {
-        ret = OB_SUCCESS;
-      }
-    } else if (OB_UNLIKELY(table_schema_version > freeze_info.schema_version)) {
-      ret = OB_SCHEMA_ERROR;
-      LOG_ERROR("schema version in freeze info is less than table schema version", K(ret), K(ls_id), K(tablet_id), K(data_tablet_id),
-        K(snapshot_version), K(table_schema_version), K(freeze_info), K(create_scn), K(table_schema));
-    }
-  }
-
-  if (FAILEDx(ObTabletCreateDeleteHelper::prepare_create_msd_tablet())) {
+  if (OB_FAIL(ObTabletCreateDeleteHelper::prepare_create_msd_tablet())) {
     LOG_WARN("fail to prepare create msd tablet", K(ret));
   }
 
diff --git a/src/storage/tablet/ob_tablet.cpp b/src/storage/tablet/ob_tablet.cpp
index a717f01cd0..6db115b087 100755
--- a/src/storage/tablet/ob_tablet.cpp
+++ b/src/storage/tablet/ob_tablet.cpp
@@ -3955,7 +3955,7 @@ int ObTablet::get_kept_multi_version_start(
   int ret = OB_SUCCESS;
   int tmp_ret = OB_SUCCESS;
   multi_version_start = 0;
-  int64_t max_merged_snapshot = 0;
+  int64_t last_major_snapshot_version = 0;
   int64_t min_reserved_snapshot = 0;
   int64_t min_medium_snapshot = INT64_MAX;
   int64_t ls_min_reserved_snapshot = INT64_MAX;
@@ -3970,13 +3970,13 @@ int ObTablet::get_kept_multi_version_start(
   } else if (OB_FAIL(table_store_wrapper.get_member(table_store))) {
     LOG_WARN("fail to get table store", K(ret), K(table_store_wrapper));
   } else if (0 != table_store->get_major_sstables().count()) {
-    max_merged_snapshot = table_store->get_major_sstables().get_boundary_table(true/*last*/)->get_snapshot_version();
+    last_major_snapshot_version = table_store->get_major_sstables().get_boundary_table(true/*last*/)->get_snapshot_version();
   }
 
   if (OB_FAIL(ret)) {
   } else if (FALSE_IT(multi_version_start = tablet.get_multi_version_start())) {
   } else if (OB_FAIL(MTL(ObTenantFreezeInfoMgr*)->get_min_reserved_snapshot(
-      tablet_id, max_merged_snapshot, min_reserved_snapshot))) {
+      tablet_id, last_major_snapshot_version, min_reserved_snapshot))) {
     LOG_WARN("failed to get multi version from freeze info mgr", K(ret), K(tablet_id));
   } else if (!tablet.is_ls_inner_tablet()) {
     ObTabletMediumInfoReader medium_info_reader(tablet);
@@ -4003,13 +4003,14 @@ int ObTablet::get_kept_multi_version_start(
       if (REACH_TENANT_TIME_INTERVAL(10 * 1000 * 1000L /*10s*/)) {
         LOG_INFO("tablet multi version start not advance for a long time", K(ret), K(ls_id), K(tablet_id),
                 K(multi_version_start), K(old_min_reserved_snapshot), K(min_medium_snapshot),
-                "ls_min_reserved_snapshot", ls.get_min_reserved_snapshot(), K(tablet));
+                K(ls_min_reserved_snapshot), "old_tablet_multi_version_start", tablet.get_multi_version_start(),
+                "old_tablet_snaphsot_version", tablet.get_snapshot_version(), K(tablet));
       }
     }
   }
   LOG_DEBUG("get multi version start", K(ret), K(ls_id), K(tablet_id),
       K(multi_version_start), K(min_reserved_snapshot), K(min_medium_snapshot),
-      K(ls.get_min_reserved_snapshot()), K(max_merged_snapshot));
+      K(ls_min_reserved_snapshot), K(last_major_snapshot_version));
   return ret;
 }
 
diff --git a/src/storage/tablet/ob_tablet_table_store.cpp b/src/storage/tablet/ob_tablet_table_store.cpp
index 36cb7aad5d..0d56917e1d 100755
--- a/src/storage/tablet/ob_tablet_table_store.cpp
+++ b/src/storage/tablet/ob_tablet_table_store.cpp
@@ -1606,7 +1606,7 @@ int ObTabletTableStore::check_ready_for_read(const ObTablet &tablet)
     const SCN &last_minor_end_scn = minor_tables_.get_boundary_table(true/*last*/)->get_end_scn();
     if (OB_UNLIKELY(clog_checkpoint_scn != last_minor_end_scn)) {
       ret = OB_ERR_UNEXPECTED;
-      LOG_ERROR("last minor table's end_scn must be equal to clog_checkpoint_scn",
+      LOG_WARN("last minor table's end_scn must be equal to clog_checkpoint_scn",
           K(ret), K(last_minor_end_scn), K(clog_checkpoint_scn), KPC(this), K(tablet));
     } else {
       is_ready_for_read_ = true;
@@ -1804,9 +1804,7 @@ int ObTabletTableStore::need_remove_old_table(
   } else if (multi_version_start <= 0) {
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("get invalid arguments", K(ret), K(multi_version_start));
-  } else if (minor_tables_.empty() || INT64_MAX == minor_tables_[0]->get_upper_trans_version()) {
-    // do nothing
-  } else if (minor_tables_[0]->get_upper_trans_version() <= major_tables_[0]->get_snapshot_version()) {
+  } else if (minor_tables_.count() > 0 && minor_tables_[0]->get_upper_trans_version() <= major_tables_[0]->get_snapshot_version()) {
     // at least one minor sstable is coverd by major sstable
     // don't need to care about kept_multi_version_start here
     // becase major_tables_[0]::snapshot_version must <= kept_multi_version_start