public List<Pair<IDeviceID, Integer>> splitByDevice(int start, int end) {
    return Collections.singletonList(new Pair<>(getDeviceID(), end));
  }
Split the tablet of the given range according to Table deviceID.

@param start inclusive
@param end exclusive
@return each the number in the pair is the end offset of a device
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/node/write/InsertTabletNode.java