Category: Hadoop

Hadoop is a distributed system infrastructure developed by the Apache Foundation. Users can develop distributed programs without understanding the underlying details of distributed. Make full use of the power of clusters for high-speed computing and storage. Hadoop implements a distributed file system (Hadoop Distributed File System), referred to as HDFS. HDFS has the characteristics of high fault tolerance and is designed to be deployed on low-cost hardware; and it provides high throughput (high throughput) to access application data, suitable for those with large data sets (large data sets). set) application. HDFS relaxes the requirements of POSIX and can access data in the file system in the form of streaming access. The core design of the Hadoop framework is: HDFS and MapReduce. HDFS provides storage for massive amounts of data, while MapReduce provides calculations for massive amounts of data.

Hive small knot

(1) Basic introduction to hive

Hive is a data warehouse tool based on Hadoop, which can map structured data files to a database table and provide SQL-like query functions

Other knowledg

October 12, 2021By Simo Hadoop hive, small knotLeave a Comment

Build a nuXT project (with Element UI, AXIOS)

Using Nuxt Nuxt.js document: https://zh.nuxtjs.org/guide/

npx create-nuxt-app

// or yarn create nuxt-app Run h3> npm run dev Routing Basic routing Nuxt.js is based on pages The directory

October 12, 2021By Simo Hadoop AXIOS, build, element, match, Nuxt, project, UILeave a Comment

Hive Basics 1

hadoop hive (emphasis) day-6

1) Hive metadata (similar to tables, column lengths, etc.) storage On mysql

1)create table table_name like old_table //only table

2)create table table

October 12, 2021By Simo Hadoop foundation, hive, KnowledgeLeave a Comment

How to use Spring data with couchbase without the _class property

Is there an easy way to use spring data couchbase with documents without the _class attribute?
In the sofa base, there is something like this in my sampling database:

{
“username”: “alice”,

October 12, 2021By Simo Hadoop Couchbase, data, how to use, springLeave a Comment

HBase (3) – Build full-distributed

HBase set up–Fully-distributed 1, instructions for building methods By default, HBase runs in standalone mode. Both standalone mode and pseudo-distributed mode are provided for the purposes of sm