@Override
public void map(long recordNum, Record record, TaskContext context) throws IOException {
key.set("user_id", record.getString(0));
key.set("brand_id", record.getString(1));
value.set("type", record.getString(2));
value.set("visit_datetime", record.getString(3));
context.write(key, value); // hashmap ?
}
/** Writes all keys and values directly to output. */
@Override
public void reduce(Record key, Iterator<Record> values, TaskContext context)
throws IOException {
result.set(0, key.get(0));
while (values.hasNext()) {
Record val = values.next();
result.set(1, val.get(0));
context.write(result);
}
}
@Override
public void setup(TaskContext context) throws IOException {
result = context.createOutputRecord();
}
@Override
public void map(long recordNum, Record record, TaskContext context) throws IOException {
key.set(new Object[] {(Long) record.get(0)});
value.set(new Object[] {(Long) record.get(1)});
context.write(key, value);
}
@Override
public void setup(TaskContext context) throws IOException {
key = context.createMapOutputKeyRecord();
value = context.createMapOutputValueRecord();
}