2014年3月17日

mapreduce (六) MapReduce实现去重 NullWritable的使用

摘要： 习题来源：http://www.cnblogs.com/xia520pi/archive/2012/06/04/2534533.htmlfile12012-3-1 a2012-3-2 b2012-3-3 c2012-3-4 d2012-3-5 a2012-3-6 b2012-3-7 c2012-3-... 阅读全文

posted @ 2014-03-17 10:46 雨渐渐 阅读(3884) 评论(0) 推荐(0) 编辑

hadoop 生态系统版本对应问题

摘要： http://hbase.apache.org/book.html这是hortonworks的哦哦哦哦哦哦哦哦哦哦哦哦Hadoop 2.x is better than Hadoop 1.xHadoop 2.x is faster, with more features such as short-circuit reads which will help improve your HBase random read profile as well important bug fixes that will improve your overall HBase experience. You 阅读全文

posted @ 2014-03-17 09:57 雨渐渐 阅读(337) 评论(0) 推荐(0) 编辑

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