public int getMeasurementColumnCnt() {
    if (measurementColumnCnt == -1) {
      measurementColumnCnt = 0;
      if (measurementSchemas != null) {
        for (int i = 0; i < measurementSchemas.length; i++) {
          if (isValidMeasurement(i)) {
            measurementColumnCnt++;
          }
        }
      }
    }
    return measurementColumnCnt;
  }
Physical address of data region after splitting
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/node/write/InsertNode.java