reduce log printing in sync_log_succ

src/storage/memtable/ob_memtable_context.cpp

@@ -670,7 +670,10 @@ int ObMemtableCtx::sync_log_succ(const int64_t log_ts, const ObCallbackScope &ca
       TRANS_LOG(WARN, "sync log failed", K(ret));
     }
   } else {
-    TRANS_LOG(INFO, "No memtable callbacks because of trans_end", K(end_code_), KPC(ctx_));
+    if (!callbacks.is_empty()) {
+      TRANS_LOG(INFO, "No memtable callbacks because of trans_end", K(end_code_), K(log_ts),
+                KPC(ctx_));
+    }
   }
 
   return ret;
@@ -684,7 +687,9 @@ void ObMemtableCtx::sync_log_fail(const ObCallbackScope &callbacks)
   if (is_partial_rollbacked_() || OB_SUCCESS == ATOMIC_LOAD(&end_code_)) {
     log_gen_.sync_log_fail(callbacks);
   } else {
-    TRANS_LOG(INFO, "No memtable callbacks because of trans_end", K(end_code_), KPC(ctx_));
+    if (!callbacks.is_empty()) {
+      TRANS_LOG(INFO, "No memtable callbacks because of trans_end", K(end_code_), KPC(ctx_));
+    }
   }
   return;
 }