Docker deploys hue and connects to Impala cluster with kerberos authentication

In the latest version 4.6.0, hue provides the option to compile docker images. Then we can use the compiled images to start the hue service. In previous versions (such as 4.2.0, 4.3.0, etc.), if we want to deploy the hue service, we need to install the dependency package on the corresponding server, ...

Posted on Sun, 01 Mar 2020 22:03:52 -0500 by healy787

How to access SQL Server database by function calculation

Function Compute: Function calculation Is an event driven fully hosted computing service. With function computing, you don't need to purchase and manage infrastructure such as servers, just write and upload code. Function calculation provides you with computing resources, runs tasks flexibly and reliably, and provides functions such as log quer ...

Posted on Sun, 01 Mar 2020 21:58:05 -0500 by mustatin

Mycat - Set global self-increasing id

In the Mycat - Implementing MySQL Horizontal Subtable In the article, we divide the order_master data table in the order database of the store database horizontally according to the customer_id field. When we insert the data into the order_master data table through Mycat, and then query the order_master ...

Posted on Sun, 01 Mar 2020 20:11:49 -0500 by Sphen001

Cache penetration and cache avalanche

Cache penetration and cache avalanche, I believe that the number of students who have used cache has been touched. Cache penetration, as the name implies, is that the request directly passes through the cache to access the database, and the cache does not work as a virtual device. Cache avalanche is a t ...

Posted on Sun, 01 Mar 2020 05:44:30 -0500 by KingOfHeart

[actual combat] installation, deployment and simple use of zookeeper+kafka cluster

Catalog Asynchronous update: Message Queuing Message queuing: kafka zookeeper cluster construction scala build kafka cluster construction Asynchronous update: Message Queuing The multi-level cache architecture is mainly used to solve the data with low timeliness, such as the basic information ...

Posted on Sun, 01 Mar 2020 04:45:13 -0500 by tariel

Face recognition attendance system based on OpenCV

Attendance system design The initial method of the attendance system for students in class is the manual paper roll call. At present, some schools still use this method for roll call. This method has always been considered the most effective way of attendance check. However, due to the variety of cour ...

Posted on Sun, 01 Mar 2020 03:54:19 -0500 by pablodelapena

Mm Wiki: lightweight team collaboration tool installation and summary

Catalog 0. introduction 1. preparation 1.1 system and environment 1.1.1CentOS 1.1.2Mysql 1.1.3MM-Wiki 1.2 hardware requirements 2. Installation and configuration 2.1 application installation 2.2 application configuration 2.2.1 license agreement 2.2.2 environmental testing 2.2.3 system co ...

Posted on Sun, 01 Mar 2020 01:13:47 -0500 by kenshintomoe225

CodeIgniter source code interpretation controller

Controller Controller is the central processor of your whole application. When the web request comes, CI will take the corresponding controller class and controller method, submit the request to them, then carry out a series of business calculations, and finally the controller will return the processi ...

Posted on Sat, 29 Feb 2020 23:40:50 -0500 by truegilly

Python 3 Standard Library: contextlib context manager tool

1. contextlib context manager tool The contextlib module contains tools for working with context managers and with statements. 1.1 Context Manager API The context manager manages the resources in a code block, creates them when they enter the code block, and cleans them up after they exit.For example, a file supports the context manager API, wh ...

Posted on Sat, 29 Feb 2020 22:05:06 -0500 by php1999

[Database] Ubuntu 18.04 Install MySQL Details

00. Catalogue Article Directory 00. Catalogue 01. Install MySQL 02.Configure MySQL 03. View MySQL status 04. Configure Remote Access to MySQL 05. Problem Analysis 06. Appendix 01. Install MySQL 1.1 Update Software Source deng@itcast:~$ sudo apt update 1.2 Install mysql-server deng@itcast:~$ ...

Posted on Sat, 29 Feb 2020 19:19:03 -0500 by noeffred