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Articles Catalogue Use of Zookeeper03's Java API Java program operation Zookeeper 1. Create java projects and import related jar packages maven project coordinates 2. Simple use of API 2.1 Configuring Zookeeper objects Common API operations Adding Nodes Judging whether a node exists or not Getting ...

I. Download and Unzip 1. Introduction to Zookeeper As a distributed service framework, Zookeeper is mainly used to solve the consistency problem of application systems in distributed cluster. It can provide data storage based on directory node tree similar to file system. But Zookeeper is not used to store data exclusively. Its function is main ...

Cluster Resource and Role Planning node1 node2 node3 node4 node5 zookeeper zookeeper zookeeper nn1 nn2 datanode datanode datanode datanode datanode journal journal journal rm1 rm2 nodemanager nodemanager nodemanager nodemanager nodemanager HMaster HMaster HRegionServe ...

1. Why pre-partition? * Increase data read-write efficiency * Load balancing to prevent data skewing * Convenient cluster disaster relief dispatch region * Optimize the number of Map s 2. How to pre-partition? Each region maintains the startRow and endRowKey, and if the data added matches the r ...

After chatting with some students who use clickhouse, many small and medium-sized companies still use the stand-alone version, which is unexpected; perhaps it is because of the clickhouse's performance in seconds and seconds, coupled with the small amount of data, the cost of data recovery is not high. ...

For more articles, visit my blog- Code is endless. Nowadays, most Internet companies will adopt micro-service architecture, but there are different ways to implement micro-service architecture. There are two main ways: one is remote call based on Http protocol, the other is RPC-based call. Both approaches have their own representative framewor ...

Hadoop cluster build-03 compile and install Hadoop Hadoop Cluster Build-02 Installation Configuration Zookeeper Preparations for Hadoop Cluster Building-01 HDFS is a distributed file system used with Hadoop, which is divided into two parts. namenode: nn1.hadoop nn2.hadoop datanode: s1.hadoop s2.hadoop s3.hadoop (If you can't understand th ...

Extracted from: https://www.cnblogs.com/aspirant/p/8532962.html Give an exampleA relies on B and C, while B relies on X and Y, while C relies on X and M. A will introduce X, Y and M dependency packages besides B and C dependency packages. (Generally, Maven can control transfer dependencies by < scope> and so on.)Here's a special note: ...

https://blog.csdn.net/xiaoxsen/article/details/79050842 Note: Close the firewall Prerequisite: Prepare three server nodes to install and deploy Zookeeper and ActiveMQ. My three nodes are 192.168.1.130, 192.168.1.163 and 192.168.1.165, respectively. Inst ...

This article continues with the introduction of Java's own performance monitoring tools. This article uses jmap tools to play with them.~ jmap (Java Memory Map) command can generate heap snapshots and object statistics of Java applications, analyze the generated heap snapshots, analyze the memory occupied by objects in the heap, check large ...