MapReduce 根据id 匹配user和order数据

user数据:java u001,senge,18,angelababy u002,laozhao,48,ruhua u003,xiaoxu,16,chunge u004,laoyang,28,zengge u005,nana,14,huangbo order订单数据:web order001,u001 order002,u001 order003,u005 order004,u002 order
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