public void reduce(Text key, Iterable<Text> values, Context context)
throws IOException, InterruptedException {
// 편차값에 대한 카운트를 저장할 Map 선언 <편차값,aws갯수>
TreeMap<Double, String> awsCountDev = new TreeMap<Double, String>();
for (Text val : values) {
try {
CsvParser parser = new CsvParser();
parser.parse(val.toString());
// Values에 포함된 기상요소 편차 값
double deviation = Double.parseDouble(parser.get(1));
// aws 조합
String awsSet = parser.get(0) + DELIMITER + parser.get(1) + DELIMITER + parser.get(2);
// 편차 값이 이미 저장되어 있으면 값 1 증가, 저장된 편차 값이 없으면 최초값 1 부여
if (awsCountDev.containsKey(deviation)) {
awsCountDev.put(deviation, awsCountDev.get(deviation) + "|" + awsSet);
} else {
awsCountDev.put(deviation, awsSet);
}
} catch (Exception e) {
e.printStackTrace();
}
}
int writeCnt = 0;
String awsSetList = "";
Iterator<Double> iterator = awsCountDev.descendingKeySet().iterator();
while (iterator.hasNext()) {
Double valuesDev = iterator.next();
String[] arr = StringUtil.myToken(awsCountDev.get(valuesDev), "|");
int awsCount = arr.length;
for (int i = 0; i < awsCount; i++) {
awsSetList += DELIMITER + arr[i];
writeCnt++;
}
if (writeCnt >= returnCnt) break;
}
context.write(new Text(key + DELIMITER + writeCnt + awsSetList), NullWritable.get());
}
public void reduce(Text key, Iterable<Text> values, Context context)
throws IOException, InterruptedException {
HashMap<String, String> hm = new HashMap<String, String>();
for (Text val : values) {
String retValue = val.toString();
hm.put(retValue.substring(1, 2), retValue.substring(3));
}
if ((hm.size() == 2) && (hm.containsKey("F")) && (hm.containsKey("T"))) {
CsvParser parserFrom = new CsvParser();
CsvParser parserTo = new CsvParser();
try {
parserFrom.parse(hm.get("F"));
parserTo.parse(hm.get("T"));
if (parserFrom.getSize() == 13 && parserTo.getSize() == 13) {
context.write(
key,
new Text(
calcDeviation(parserFrom.get(0), parserTo.get(0))
+ DELIMITER
+ calcDeviation(parserFrom.get(1), parserTo.get(1))
+ DELIMITER
+ calcDeviation(parserFrom.get(2), parserTo.get(2))
+ DELIMITER
+ calcDeviation(parserFrom.get(3), parserTo.get(3))
+ DELIMITER
+ calcDeviation(parserFrom.get(4), parserTo.get(4))
+ DELIMITER
+ calcDeviation(parserFrom.get(5), parserTo.get(5))
+ DELIMITER
+ calcDeviation(parserFrom.get(6), parserTo.get(6))
+ DELIMITER
+ calcDeviation(parserFrom.get(7), parserTo.get(7))
+ DELIMITER
+ calcDeviation(parserFrom.get(8), parserTo.get(8))
+ DELIMITER
+ calcDeviation(parserFrom.get(9), parserTo.get(9))
+ DELIMITER
+ calcDeviation(parserFrom.get(10), parserTo.get(10))
+ DELIMITER
+ calcDeviation(parserFrom.get(11), parserTo.get(11))
+ DELIMITER
+ calcDeviation(parserFrom.get(12), parserTo.get(12))
+ DELIMITER
+ calcDeviation(parserFrom.get(13), parserTo.get(13))));
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}