private void updateTime(long currentTime) {
    if (conditionWindow.getStartTime() > currentTime) {
      conditionWindow.setStartTime(currentTime);
    }
    if (conditionWindow.getEndTime() < currentTime) {
      conditionWindow.setEndTime(currentTime);
    }
  }
skip the row which don't belong to any window(controlColumn is false or null).
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/window/ConditionWindowManager.java