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1, Connect Start service ./redis-server redis.conf connect ./redis-cli -h 127.0.0.1 -p 6379 perhaps ./redis-cli 2, Redis data types and application scenarios Redis is a key value storage system written in ANSI C language. Note: in Redis, the command ignores case, (set), and the key does not ignore case (name) 2.1 Key design ...

Introduction to hbase Hbase is the abbreviation of Hadoop Database. The Hbase project was initiated by Chad Walters and Jim Kellerman of Powerset at the end of 2006 and designed according to the paper "Bigtable: a distributed storage system for structured data" published by Chang of Google. The first version was released in October 2 ...

Resource address: http://dblab.xmu.edu.cn/post/movierecommend/ Project introduction 1. Recommendation system Discover the potential needs of users according to their historical data. 2. Long tail commodity Different from popular goods, popular goods represent the general needs of users, while long tail goods represent the personalized need ...

catalogue Hadoop deployment Deploy components 1, VMware deployment installation 2, Ubuntu18 Deployment and installation of version 04.5 ​ 3, Installing VMware Tools 4, Configure ssh password free login 5, Java environment installation Hadoop installation MySQL installation and deployment hive installation deployment Sqoop installati ...

1. Build table songsong,bingbing_lili,xiao song:18_xiaoxiao song:19,hui long guan_beijing yangyang,caicai_susu,xiao yang:18_xiaoxiao yang:19,chao yang_beijing create table if not exists test( name string, friends array<string>, children map<string, int>, address struct<street:string, city:string> ) row format delimited ...

1, Introduction to hadoop 1. Description Hadoop is a distributed system infrastructure developed by the Apache foundation. Users can develop distributed programs without knowing the details of the distributed bottom layer. Make full use of the power of cluster for high-speed computing and storage. Hadoop implements a Distributed File S ...

Hadoop HA high availability installation Problems needing attention in this scheme hdfs-site. Dfs.xml file ha. fencing. The methods parameter is shell instead of sshence Because the host of the primary node is down (the host is down instead of stopping the service) and cannot be switched However, most articles related to Hadoop HA fro ...

preface    it's best to recompile the source code when building Hadoop, because some functions of Hadoop must coordinate Java class files and library files generated by Native code through JNT. To run Native code in linux system, first compile Native into [. so] file of target CPU architecture. Different processor architectures n ...

Basic operation of function View the description information of the specified function: desc function function name;Display function extension content: desc function extended function name; Typical advanced functions Group sorting takes TopN To implement the grouping sorting function, you need to use row_number and over functions. row_ ...

Distributed full text search solution 1. Solution introduction ElasticSearch is a distributed full-text search engine based on RESTful web interface. The solution is to implement a distributed full-text search system based on three data systems: Mysql database, Hadoop Ecology (optional) and ElasticSearch search engine. It mainly includes th ...