public static List<Map<String, Object>> createColumnsInfo(List<FieldSchema> columns,
      List<ColumnStatisticsObj> columnStatisticsList) {
    List<Map<String, Object>> columnsInfo = new ArrayList<>(columns.size());
    for (FieldSchema column : columns) {
      ColumnStatisticsData statistics = getStatistics(column, columnStatisticsList);
      columnsInfo.add(createColumnInfo(column, statistics));
    }
    return columnsInfo;
  }
Formats DESC TABLE results to json format.
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/info/desc/formatter/JsonDescTableFormatter.java