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1.hbase is a distributed system, which needs to rely on HDFS as the storage medium and zookeeper to complete the monitoring of the master-slave nodes. 2. Installation preparation is as follows: 1.HBase role HMaster (master node, one Active, one StandBy) Hreginserver (data node, multiple) 2. dependence HDFS cluster, zookeeper cluster [start] ...

1. First, Docker should be installed in CentOS 7, Docker installation reference 2. Pull the docker image of ZooKeeper and go to https://hub.docker.com/ Search relevant zoomkeeper images on docker pull zookeeper:3.4.14 3. Create three folders corresponding to three containers on the host computer /root/zookeeper01/conf /root/zookeeper01/d ...

Source code for this article: GitHub. Click here || GitEE. Click here 1. Introduction to ElasticJob 1. Timing Tasks In the previous article, you said that QuartJob is a timed task standard that is widely used.But the core point of Quartz is that executing timed tasks is not focused on business models and scenarios, and lacks highly customized ...

Problem Description: as a rookie, in the process of learning spring boot, I want to watch the teacher's video once and knock myself to impress myself a little bit. As a result, the problem comes. @The Reference of the Reference annotation reported a null pointer exception. After more than two hours of t ...

Service publishing Startup process 1.ServiceConfig#export When the service provider starts the deployment, dubbo will call serviceconfig ා export to activate the service publishing process, as shown below: Java API: // 1. Create ServiceConfig instance ServiceConfig<IGreetingService> serviceConfig = new ServiceConfig<>( ...

Introduction and use of HBase 1, introduction hbase is the open source java version of bigtable. It is a database system based on hdfs, which provides high reliability, high performance, column storage, scalability, real-time reading and writing of nosql. 2. Differences with RDBMS 1. RDBMSStructur ...

Blog Outline:1, Overview of Kafka1) Message queuing2) Why use message queuing?3) What is Kafka?4) Characteristics of Kafka5) Kafka architecture6) Difference between Topic and Partition7) kafka flow chart8) Kafka's file storage mechanism9) Data reliability and persistence assurance10) leader election2, Deploy single Kafka1) Deploy Kafka2) Test ...

Article directory Environment description Download and unzip Change configuration sqoop-env.sh After decompression Modify sqoop-env.sh Configure environment variables Copy mysql driver mysql start View sqoop version Test with mysql Environment description Software Edition operating syste ...

background The System tps is 3000, distributed deployment is adopted, and the business order number needs to be globally unique, such as order number. There are many common distributed global id schemes on the Internet, including the following: UUID redis atomic self increasing zookeeper node directo ...

In the previous documents, we demonstrated how to use shared files and shared databases to realize the cluster of activemq. See also MasterSlave cluster deployment of ActiveMQ high availability solution (HA) (I) In this section, we demonstrate how to implement clustering through leveldb + zookeeper. O ...