hadoop任务-阿里云

Hadoop任务scan Hbase 导出数据量变小分析

背景：一个MR任务scan hbase 导出hive 文件，但是发现某些天数据突然变小，而且里面数据行数也变小(hbase里面的数据只增不减) 原因定位：日志非常隐蔽，需要去MR 任务里面看 mapper 里面的log 日志，发现有error 日志，进一步定位发现有mysql 连接数过多，可以看到如...

大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第一阶段

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大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第二阶段

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大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第三阶段

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这个flink产品是基于ak的，可以提交sql任务到ecs自建hadoop集群吗？

hadoop + ha集群提交pi任务的时候为什么一直在hang的状态呀？

Hadoop数据迁移MaxCompute中配置数据同步任务的步骤是什么？

Hadoop数据迁移MaxCompute中新建任务资源组的步骤是什么？

hadoop中通知后置任务开始执行的操作意义和源代码分别是什么？

hadoop中使用crontab调度检查循环等待前置任务结束的返回源代码和相关意义是什么？

hadoop中使用crontab调度检查前置任务是否已经结束的返回源代码和相关意义是什么？

在一个运行的Hadoop 任务中，InputSplit是什么呢？

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更新时间 2024-01-30 01:54:08

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