private static void WriteNewCentroids(Context context) throws IOException {
FileSystem fs = FileSystem.get(context.getConfiguration());
Path nextCFile = new Path(context.getConfiguration().get("NEXTCFILE"));
DataOutputStream d = new DataOutputStream(fs.create(nextCFile, false));
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(d));
for (String centroid : newCentroids) {
writer.write(centroid + "\n");
}
writer.close();
}
public static void main(String[] args) throws Exception {
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(conf);
Path matFile = new Path(args[0]);
FSDataInputStream matData = fs.open(matFile);
BufferedReader br = new BufferedReader(new InputStreamReader(matData));
int i = 0;
String line;
while ((line = br.readLine()) != null) {
StringTokenizer tokenizer = new StringTokenizer(line);
String iRow = tokenizer.nextToken();
String iCol = tokenizer.nextToken();
if (Integer.parseInt(iRow) == Integer.parseInt(iCol)) {
i++;
}
}
br.close();
int dimention = i;
conf.setInt("DIMENTION", dimention);
Path xFile = new Path("preX/Result");
FSDataOutputStream xData = fs.create(xFile);
BufferedWriter iniX = new BufferedWriter(new OutputStreamWriter(xData));
for (int j = 0; j < dimention; j++) {
iniX.write(String.valueOf(j) + " 0");
iniX.newLine();
}
iniX.close();
URI matVec = new URI(args[0]);
DistributedCache.addCacheFile(matVec, conf);
int iteration = 0;
do {
ToolRunner.run(conf, new Jacobi(), args);
} while (iteration++ < max_iter && (!stopIteration(conf)));
}
