@Override ColumnStatisticsObj generate() { DoubleColumnStatsData doubleData = new DoubleColumnStatsData(genNumNulls(), genNumDvs()); doubleData.setLowValue(genLowVal()); doubleData.setHighValue(genHighVal()); ColumnStatisticsData data = new ColumnStatisticsData(); data.setDoubleStats(doubleData); return new ColumnStatisticsObj(colName, colType, data); }