大数据Spark “蘑菇云”行动第59课：广告点击系统TopN热门广告分析与实现

段智华发布时间：2016-10-10 20:48:54 ，浏览量：2

两份全局累计数据：一份在SparkStreaming中，另外一份在MySQL

计算TOPn：1、topn从数据库中计算，数据特别多，一台数据库装不完，效率不高。不采用。

2、直接从spark streaming中累加器 reducebykey

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大数据Spark “蘑菇云”行动第59课：广告点击系统TopN热门广告分析与实现

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大数据Spark “蘑菇云”行动第59课： 广告点击系统TopN热门广告分析与实现

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大数据Spark “蘑菇云”行动第59课：广告点击系统TopN热门广告分析与实现