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create table cite(citing int,cited int)row format deliminted fields terminated by ','stored as textfile;load data inpath '/tmp/file1.txt' overwrite into table cite;select * from cite l...

一、来自 hadoop in action 上的实例，我在这里做了一个总结。文件内容如下：17:16:20 http://blackproof.iteye.com/blog/180626317:16:21 http://blackproof.iteye.com/blog/180626417:16:56 http://blackproof.iteye.com/blog/1806265...

一、在（二）的基础之上做修改，代码如下： import java.io.IOException;import org.apache.hadoop.conf.Configured;import org.apache.hadoop.fs.Path;import org.apache.hadoop.io.IntWritable;import org.apache.hadoo...

一、在（一）中，我们计算出专利被那些专利所引用，在此基础上计算被引用的次数，不难实现。我们用两种方法来完成。代码（1）如下： import java.io.IOException;import org.apache.hadoop.conf.Configured;import org.apache.hadoop.fs.Path;import org.apache.hado...

一、以下是测试数据："CITING","CITED"3858241,9562033858241,13242343858241,33984063858241,35573843858241,36348893858242,15157013858242,33192613858242,36687053858242,37070043858243,2949611...