开源大数据平台 E-MapReduce api-阿里云

是将map、combiner、shuffle、reduce等分开放一个.java里。则需要实现Tool。代码 1 package zhouls.bigdata.myMapR...

Hadoop MapReduce编程 API入门系列之挖掘气象数据版本2（十）

　这篇博文，包括了，实际生产开发非常重要的，单元测试和调试代码。这里不多赘述，直接送上代码。 MRUnit 框架 MRUnit是Cloudera公司专为Hadoop MapReduce写的单元测试框架，API非常简洁实用。MRUnit针对不同测试对象使用不同的Driver： ...

Hadoop MapReduce编程 API入门系列之MapReduce多种输入格式（十七）

&nb...

Hadoop MapReduce编程 API入门系列之统计学生成绩版本2（十八）

　　这里，为了空格符的差错，直接，我们有时候，像如下这样的来排数据。 &nb...

Hadoop MapReduce编程 API入门系列之倒排索引（二十四）

2016-12-12 21:54:04,509 INFO [org.apache.hadoop.metrics.jvm.JvmMetrics] - Initializing JVM Metrics with processName=JobTracker, sessionId= 2016-12-12 ...

Hadoop MapReduce编程 API入门系列之FOF（Fund of Fund）

代码 ...

Hadoop MapReduce编程 API入门系列之压缩和计数器（三十）

生成的结果，作为输入源。 &nbs...

Hadoop MapReduce编程 API入门系列之wordcount版本1（五）

　　这个很简单哈，编程的版本很多种。代码版本1 1 package zhouls.bigdata.myMapReduce.wordcount5; 2 3 import java...

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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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优惠活动

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