public boolean isValidMeasurement(int i) {
    return measurementSchemas != null
        && measurementSchemas[i] != null
        && (columnCategories == null || columnCategories[i] == TsTableColumnCategory.FIELD);
  }
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