<kafka权威指南> Customer.java public class Customer { private int customId; private String customerName; public Customer(int customId, String customerName) { this.customId = customId; this.customerName = customerName; } public int getCustomId() { return…
Hive支持自定义map与reduce script.接下来我用一个简单的wordcount例子加以说明.使用Python开发(如果使用Java开发,请看这里). 开发环境: python:2.7.5 hive:2.3.0 hadoop:2.8.1 一.map与reduce脚本 map脚本(mapper.py) #!/usr/bin/python import sys import re while True: line = sys.stdin.readline().strip() if not…