hadoop高并发-阿里云

大规模集群下Hadoop NameNode如何承载每秒上千次的高并发访问

一、问题起源高并发请求 NameNode 会遇到什么样的问题?现在大家都明白每次请求 NameNode 修改一条元数据（比如说申请上传一个文件，那么就需要在内存目录树中加入一个文件），都要写一条 edits log，包括两个步骤：写入本地磁盘。通过网络传输给 JournalNodes 集群。但是如果...

Hadoop高并发？

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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大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第四阶段

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大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第五阶段

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更新时间 2024-03-01 15:50:07

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