hadoop官網(wǎng)地址：http://hadoop.apache.org/
官網(wǎng)對于Hadoop的介紹
What Is Apache Hadoop?
The Apache? Hadoop? project develops open-source software for reliable（可靠）, scalable（可擴(kuò)展）, distributed（分布式） computing.
The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters（集群） of computers using simple programming models. It is designed to scale up（擴(kuò)大） from single servers to thousands of machines, each offering local computation（計(jì)算） and storage（存儲）. Rather than rely on hardware to deliver（提供） high-availability, the library itself is designed to detect（檢測） and handle failures at the application layer, so delivering a highly-available service on top of a cluster of computers, each of which may be prone（易于） to failures.
The project includes these modules:
? ??Hadoop Common: The common utilities that support the other Hadoop modules.
? ??Hadoop Distributed File System (HDFS?): A distributed file system that provides high-throughput（高吞吐量） access to application data.
? ??Hadoop YARN: A framework for job scheduling（作業(yè)調(diào)度） and cluster resource management（資源管理）.
? ??Hadoop MapReduce: A YARN-based system for parallel（并行） processing of large data sets.
Hadoop能做什么？
? ? 搭建大型數(shù)據(jù)倉庫帽揪，PB級數(shù)據(jù)的存儲僻造、處理、分析、統(tǒng)計(jì)等業(yè)務(wù)
? ? 例如：搜索引擎碍讯、日志分析属瓣、商業(yè)智能、數(shù)據(jù)挖掘
