hadoop writable接口的相关内容

Hadoop中的Writable接口中的NullWritable和BytesWritable是什么？

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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hadoop中的序列化与Writable接口

简介序列化和反序列化就是结构化对象和字节流之间的转换，主要用在内部进程的通讯和持久化存储方面。通讯格式需求 hadoop在节点间的内部通讯使用的是RPC，RPC协议把消息翻译成二进制字节流发送到远程节点，远程节点再通过反序列化把二进制流转成原始的信息。RPC的序列化需要实现以下几点： 1.压缩，...

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更新时间 2023-01-13 17:19:39

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