@Override
  public boolean endTimeEmpty() {
    for (long endTime : endTimes) {
      if (endTime != Long.MIN_VALUE) {
        return false;
      }
    }
    return true;
  }
Deserialize TimeIndex and get devices only.

@param inputStream inputStream
@return device name
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/tsfile/timeindex/ArrayDeviceTimeIndex.java