docs: public SyncStatusEventData fetch(Long pipelineId) {
          String path = StagePathUtils.getPipeline(pipelineId);
          try {
              byte[] bytes = zookeeper.readData(path);
              if (bytes == null || bytes.length == 0) {
                  SyncStatusEventData evnetData = new SyncStatusEventData();
                  evnetData.setPipelineId(pipelineId);
                  return evnetData;
              } else {
                  return JsonUtils.unmarshalFromByte(bytes, SyncStatusEventData.class);
              }
          } catch (ZkException e) {
              // 没有节点返回空
              throw new ArbitrateException("fetch_SyncStatus", pipelineId.toString(), e);
          }
      }