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Hadoop in Action Chuck Lam
Publisher: Manning Publications

Ǽ�写可扩展的,分布式的,海量数据处理的程序的基础. By default, hive operations are limited to the superuser. Apache Oozie, the workflow coordinator for Apache Hadoop, has actions for running MapReduce, Apache Hive, Apache Pig, Apache Sqoop, and Distcp jobs; it also has a Shell action and a Java action. If you are using cdh, then the superuser is hdfs. Ǽ�写一个简单的MapReduce程序. The reason for this is because of the permission of hive warehouse directory. Hadoop in Action teaches readers how to use Hadoop and write MapReduce programs. €�Hadoop in Action” is absolutely the least theory-heavy book in this list: it is entirely aimed at getting you up to speed with Hadoop in the way you need to use it in your environment. IN ACTIONChuck LamMANNING Hadoop in Action Hadoop in ActionCHUCK LAMMANNINGGreenwich (74° w. The intended readers are programmers, architects, and project managers who have to process large amounts of data offline. January 18, 2011 Dreamtech Press Leave a comment Go to comments. Hadoop支持非java预言来编写程序，这就会用到Streaming的通用API。HadoopStreaming使用流与程序进行交互。从STDIN输入数据，输出到STDOUT。数据必须为文本，而且每一行被视为一条记录。 用Streaming处理键-.. Long.) For online information and ordering of this and other Manning books, please visit www. Next Thursday, February 24 (at 10am PT), I'll be taking part in a webinar with Pero Subasic, Chief Architect, AOL to discuss the use cases for NoSQL database and Hadoop.