public void setup(Context context) {
Configuration conf = context.getConfiguration();
String date = DayPartitioner.getDate(context);
HDFSPath outdir = new HDFSPath(conf, conf.get("output"));
Datafile dataFile = outdir.getFile(date);
sentenceFile = new SentenceFile(dataFile);
sentenceFile.openWrite();
}
public static int countReducers(Configuration conf, Path inputPath) throws IOException {
HashSet<String> timestamps = new HashSet();
HDFSPath inHdfsPath = new HDFSPath(conf, inputPath);
for (DirComponent path : inHdfsPath.wildcardIterator()) {
timestamps.add(path.getName());
}
return timestamps.size();
}