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文章 2022-02-16 来自：开发者社区

Spark 概念学习系列之Spark相比Hadoop MapReduce的特点（二）

Spark相比Hadoop MapReduce的特点（1）中间结果输出基于MapReduce的计算引擎通常会将中间结果输出到磁盘上，进行存储和容错。出于任务管道承接的考虑，当一些查询翻译到MapReduce任务时，往往会产生多个Stage，而这些串联的Stage又依赖于底层文件系统（如HDFS）来存储每...

文章 2022-02-16 来自：开发者社区

Storm概念学习系列之Storm与Hadoop的角色和组件比较

Storm与Hadoop的角色和组件比较　　Storm 集群和 Hadoop 集群表面上看很类似。但是 Hadoop 上运行的是 MapReduce 作业，而在 Storm 上运行的是拓扑 Topology，这两者之间是非常不同的。一个关键的区别是：一个MapReduce 作业最终会结束，而一个 Topology 拓扑会永远运行（除非手动杀掉）。表 1-1 列出了 Hadoo...

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开源大数据平台 E-MapReduce

开源大数据平台 E-MapReduce（简称“EMR”）是云原生开源大数据平台，向客户提供简单易集成的Hadoop、Hive、Spark、Flink、Presto、ClickHouse、StarRocks、Delta、Hudi等开源大数据计算和存储引擎服务。

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