@Override
  public List<PartialPath> getViewPathList() {
    List<PartialPath> result = new ArrayList<>(this.viewPathToSourceMap.keySet());
    return result;
  }
This variable will be set in function splitByPartition() according to analysis. And it will be
set when creating new split nodes.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/node/metadata/write/view/CreateLogicalViewNode.java