public String toString() {
    return String.format(
        "DeleteDataNode-%s[ Paths: %s, Region: %s, ProgressIndex: %s]",
        getPlanNodeId(),
        pathList,
        regionReplicaSet == null ? "Not Assigned" : regionReplicaSet.getRegionId(),
        progressIndex == null ? "Not Assigned" : progressIndex);
  }
byte: type, integer: pathList.size(), long: deleteStartTime, deleteEndTime, searchIndex
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/node/write/DeleteDataNode.java