开源大数据平台 E-MapReduce流程分析的相关内容

文章 2016-04-13 来自：开发者社区

MapReduce V1：JobTracker处理Heartbeat流程分析

我们基于Hadoop 1.2.1源码分析MapReduce V1的处理流程。这篇文章的内容，更多地主要是描述处理/交互流程性的东西，大部分流程图都是经过我梳理后画出来的（开始我打算使用序列图来描述流程，但是发现很多流程在单个对象内部都已经非常复杂，想要通过序列图表达有点担心描述不清，所以选择最基本的程序流程图），可能看起来比较枯燥，重点还是关注主要的处理流程要点，特别的地方我会刻意标示出来，便于....

文章 2016-04-13 来自：开发者社区

MapReduce V1：TaskTracker端启动Task流程分析

我们基于Hadoop 1.2.1源码分析MapReduce V1的处理流程。 TaskTracker周期性地向JobTracker发送心跳报告，在RPC调用返回结果后，解析结果得到JobTracker下发的运行Task的指令，即LaunchTaskAction，就会在TaskTracker节点上准备运行这个Task。Task的运行是在一个与TaskTracker进程隔离的JVM实例中执行，该JV....

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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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立即开通

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StarRocks 免费试用

产品入门

快速入门指导

常见问题

最佳实践

EMR实时计算实践