Hadoop提供了MapReduce编程框架,其并行处理能力的发挥需要通过开发Map及Reduce程序实现。为了便于系统测试,Hadoop提供了一个单词统计的应用程序算法样例,其位于Hadoop安装目录下${HADOOP_BASE}/share/hadoop/mapreduce/名称类似hadoop-examples-*.jar的文件中。除了单词统计,这个jar文件还包含了分布式运行的grep等功能的实现,...
* Serialize the value stored at key in a Redis-specific format and return it to the user. * * Time complexity: O(1) to access the key and additional O(N*M) to serialize it where N is * the number of Redis objects composing the value and M their average size. * @param key *...