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
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