@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    if (!super.equals(o)) {
      return false;
    }
    SeriesScanNode that = (SeriesScanNode) o;
    return seriesPath.equals(that.seriesPath);
  }
SeriesScanNode is responsible for read data a specific series. When reading data, the
SeriesScanNode can read the raw data batch by batch. And also, it can leverage the filter and
other info to decrease the result set.

<p>Children type: no child is allowed for SeriesScanNode
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/node/source/SeriesScanNode.java