HBase? From introduction to Java client development

Article directory Introduction to HBase HBase introduction HBase HBase architecture RegionServer cluster structure HBase logical storage structure HBase physical storage structure HBase installation preparation in advance HBase installation steps Hbase boot HBase verification Backup master HBase ...

Posted by sager29 on Thu, 30 Jan 2020 01:18:29 -0800

Talk about the priority of artemis message

order This paper mainly studies the priority of artemis message priority activemq-artemis-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/message/impl/CoreMessage.java public class CoreMessage extends RefCountMessage implements ICoreMessage { //...... protected byte priority; public byte getPriority() { ...

Posted by knowj on Wed, 29 Jan 2020 07:54:31 -0800

Hadoop learning Chapter 2 HDFS

Hadoop learning Chapter 2 HDFS Chapter II HDFS HDFS overview HDFS definition Advantages and disadvantages of HDFS HDFS architecture HDFS file block size (interview focus) Common command practice HDFS client operation (development focus) HDFS client environment preparation HDFS file download HDFS ...

Posted by goa103 on Mon, 27 Jan 2020 03:14:04 -0800

Talk about the persistenceEnabled of artemis

order This paper mainly studies the persistence enabled of artemis persistenceEnabled activemq-artemis-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/config/impl/ConfigurationImpl.java public class ConfigurationImpl implements Configuration, Serializable { //...... private boolean persistenceEnabled = ActiveMQDefau ...

Posted by gtcol on Sun, 26 Jan 2020 06:37:40 -0800

Talk about confirmation windowenabled of artemis

order This paper mainly studies the confirmation window enabled of artemis confirmationWindowEnabled activemq-artemis-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientProducerImpl.java public class ClientProducerImpl implements ClientProducerInternal { //...... public void send(SimpleString add ...

Posted by heepofajeep on Thu, 23 Jan 2020 03:01:54 -0800

Role application of Ansible automatic operation and maintenance playbook (deploying apache and zabbix)

I. Preface About roles Roles can be automatically installed in variable files, tasks, handlers, etc. according to the hierarchical structure. To use roles, you only need to use the include instruction in the playbook. In short, roles is a mechanism that can easily include variables, files, tasks, t ...

Posted by qistoph on Sun, 19 Jan 2020 03:24:48 -0800

Talk about handleRegularMessage of artemis ClientConsumer

order This paper mainly studies handleRegularMessage of artemis ClientConsumer handleRegularMessage activemq-artemis-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java public final class ClientConsumerImpl implements ClientConsumerInternal { //...... private final PriorityLinked ...

Posted by wafawj on Sat, 18 Jan 2020 07:50:51 -0800

Spring cloud Alibaba 4. Using Nacos as the distributed configuration center

1, Description of Nacos distributed configuration center 1. What are the mainstream configuration centers? 1. Spring cloud config. It comes with spring cloud. It is not friendly. There is no background management. You can directly use git/svn to manage files 2. Apollo: too heavy, difficult to deploy ...

Posted by mrodrigues on Sat, 18 Jan 2020 05:31:38 -0800

Sharding sphere version 4.0.0-rc1 is divided into annual tables (later optimization)

1. Sharding sphere version 4.0.0-rc1 is divided into annual tables (to be optimized later) 1.1. overview As for the tables of LogShardingAlgorithm in the previous article, I used to initialize them when I called for the first time. Although this can realize the function, I would use this if judgment every time I called. Although the performance ...

Posted by nubby on Fri, 17 Jan 2020 22:01:28 -0800

sed stream editor: a powerful tool of Shell script

One of the core ideas of Linux is that everything is a file. Among these files, the text file plays an important role. All the changes of system settings, the adjustment of software parameters, and the most basic command-line operation are the operation of "text". To manipulate text, you can't ...

Posted by DeGauss on Fri, 17 Jan 2020 21:15:47 -0800