private boolean hasNull(List valuesList) {
    boolean haveNull = false;
    for (int i1 = 0; i1 < valuesList.size(); i1++) {
      Object o = valuesList.get(i1);
      if (o instanceof List) {
        List o1 = (List) o;
        if (hasNull(o1)) {
          haveNull = true;
          break;
        }
      } else {
        if (o == null) {
          haveNull = true;
          break;
        }
      }
    }
    return haveNull;
  }
When the value is null,filter this,don't use this measurement.

@return true:all value is null;false:not all null value is null.
iotdb-client/session/src/main/java/org/apache/iotdb/session/Session.java