fix getting invalid timestamp when generate_weak_read_timestamp

src/storage/ob_partition_loop_worker.cpp

@@ -123,6 +123,10 @@ int ObPartitionLoopWorker::gen_readable_info_with_memtable_(ObPartitionReadableI
   if (OB_ISNULL(pls_) || OB_ISNULL(txs_) || OB_ISNULL(replay_status_)) {
     ret = OB_ERR_UNEXPECTED;
     STORAGE_LOG(WARN, "not inited", K(ret), K(pkey_), KP_(pls), KP_(txs), KP_(replay_status));
+  } else if (!replay_status_->is_enabled()) {
+    //current replay_status is disable, return specific errcode
+    ret = OB_STATE_NOT_MATCH;
+    STORAGE_LOG(WARN, "replay status is disable", K(ret), K(pkey_), KP_(pls), KP_(txs), KP_(replay_status));
   } else if (OB_FAIL(pls_->get_next_replay_log_info(next_replay_log_id, readable_info.min_log_service_ts_))) {
     if (OB_STATE_NOT_MATCH == ret) {
       // print one log per minute