diff --git a/be/src/common/config.h b/be/src/common/config.h
index b074c85cbd..f868d78dc8 100644
--- a/be/src/common/config.h
+++ b/be/src/common/config.h
@@ -279,7 +279,7 @@ namespace config {
     // num_based policy, the original version of cumulative compaction, cumulative version compaction once.
     // size_based policy, a optimization version of cumulative compaction, targeting the use cases requiring 
     // lower write amplification, trading off read amplification and space amplification.
-    CONF_String(cumulative_compaction_policy, "num_based");
+    CONF_String(cumulative_compaction_policy, "size_based");
 
     // In size_based policy, output rowset of cumulative compaction total disk size exceed this config size, 
     // this rowset will be given to base compaction, unit is m byte.
diff --git a/be/src/olap/tablet.cpp b/be/src/olap/tablet.cpp
index ea841642c0..df64de6b03 100644
--- a/be/src/olap/tablet.cpp
+++ b/be/src/olap/tablet.cpp
@@ -445,6 +445,13 @@ void Tablet::delete_expired_stale_rowset() {
     std::vector<Version> missed_versions;
     calc_missed_versions_unlocked(lastest_delta->end_version(), &missed_versions);
 
+    if (!missed_versions.empty()) {
+        LOG(WARNING) << "tablet:" << full_name() << ", missed version for version:" 
+                    << lastest_delta->end_version();
+        _print_missed_versions(missed_versions);
+        return;
+    }
+
     // do check consistent operation
     auto path_id_iter = path_id_vec.begin();