哪本书介绍python获取雅虎股票数据

CDH是cloudera公司出的一个产品的第4大版本，现在都到了CDH5了。 这是一套hadoop家族产品的集合。是他们测试封装好的，里面还有该公司自己定制的一套工具。还有些其它公司开发相关产品与工具。比如lily。

创使人来自facebook, google等大公司，为企业使用hadoop提供服务。 下面是一段英文原文，仅供参考。

CDH is the
      most complete,
      tested, and popular distribution of Apache Hadoop and related projects. CDH delivers the core
      elements of Hadoop – scalable storage and distributed computing – along with

      a Web-based
      user interface
      and vital
      enterprise capabilities
      .
      CDH is
      Apache-licensed open source and is the only Hadoop solution to offer unified batch processing,
      interactive SQL and interactive search, and role-based access controls.

   CDH
        provides:
Flexibility - Store any type of data and manipulate it with a variety of different
          computation frameworks including batch processing, interactive SQL, free text search,
          machine learning and statistical computation.
Integration - Get up and running quickly on a complete Hadoop platform that works with a
          broad range of hardware and software solutions.
Security - Process and control sensitive data.
Scalability - Enable a broad range of applications and scale and extend them to suit
          your requirements.
High availability - Perform mission-critical business tasks with confidence.
Compatibility - Leverage your existing IT infrastructure and investment.