public void reduce(Text key, Iterable<LongWritable> values, Context context)
throws IOException, InterruptedException {
int sum = 0;
for (LongWritable val : values) {
sum += val.get();
}
result.set(sum);
context.write(key, result);
}
@Override
public boolean next(LongWritable keyHolder, MapWritable valueHolder) throws IOException {
SolrDocument doc = cursor.nextDocument();
if (doc == null) {
return false;
}
keyHolder.set(pos++);
for (int i = 0; i < readColumns.length; i++) {
String key = readColumns[i];
Object vObj = doc.getFieldValue(key);
Writable value = (vObj == null) ? NullWritable.get() : new Text(vObj.toString());
valueHolder.put(new Text(key), value);
}
return true;
}