OO：Object-Oriented，面向对象，基于对象概念，以对象为中心，以类和继承为构造机制，来认识理解，刻画客观世界和设计；
OOA：Object-oriented Analysis 面向对象分析，进一步对OO进行细化，初步得到OO的方法；
OOD：Object-Oriented Design，面向对象设计，OO方法中一个中间过渡环节，对OOA分析的结果进行进一步规范和……
1. 概述
1.1 hive的特征：
可以通过SQL轻松访问数据的工具，从而实现数据仓库任务，如提取/转换/加载（ETL），报告和数据分析；
它可以使已经存储的数据结构化；
可以直接访问存储在Apache HDFS或其他数据存储系统（如Apache HBase）中的文件；
Hive除了支持MapReduce计算引擎，还支持Spark和Tez这两种分布式计算引擎；
……
Apache Flink 是一个框架和分布式处理引擎，用于在无边界和有边界 数据流上进行有状态的计算。Flink 能在所有常见集群环境中运行，并能以内存速度和任意规模进行计算。
接下来，我们来介绍一下 Flink 架构中的重要方面。
处理无界和有界数据
任何类型的数据都可以形成一种事件流。信用卡交易、传感器测量、机器日志、网站……
Sting Gao
In China, WeCom (or WeChat Work) has been increasingly adopted by virtue of its powerful functions and the ability to integrate personal WeChat and enterprise applications. But enterprise IT will worry about the risks of such communication application across internal and external network……
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Big data technology frameworks and products are emerging one after another, but each has its own characteristics. As the most commonly used open source framework, the following is the most comprehensive summary and comparative analysis of Apache Hadoop, Spark and Flink:
Analyst: Sting Gao
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生物小分子和大分子的科普
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Given all the benefits of resilience, the big question is how you can increase it. Here are just a few of the many ways.
Andrea J. Miller
ENTREPRENEUR LEADERSHIP NETWORK CONTRIBUTOR
CEO of Chief of Wellbeing and the Digital Patien
When faced with a difficult situation how well do you cop……
