zookeeper watcher

Source code analysis of Zookeeper: Watcher Mechanism 1. Set WatcherTo use Watcher, you must first implement the Watcher interface and pass the implementation Class Object to the specified method, such as getChildren and exist. Zookeeper allows you

Zookeeper is mainly to unify the working state of each node in the distributed system, and coordinate to provide the node resource preemption in the case of resource conflict, and provide each node with a way to understand the state of the whole

Initial ZooKeeper and cluster creation instance What is zookeeper? Zookeeper, a collaborative service for distributed applications, is an open-source implementation of Google's Chubby and a Distributed Coordination Service of Hadoop. It contains a

Reproduced to: http://hi.baidu.com/%CC%D8%B0% AE %C0%B6%C1% AB %BB%A8/blog/item/2ae9efda06e267c9572c841b.html Installation and configuration details Zookeeper introduced in this article is based on the stable version 3.2.2. The latest version can

Installation and configuration details Zookeeper introduced in this article is based on the stable version 3.2.2. The latest version can be found on the official website.Http://hadoop.apache.org/zookeeper/to obtain, Zookeeper installation is very

1. Watcher --- Notification of Change ------> client registration, watcher ---------Zookeeper provides the distributed data publishing/subscription function, which is implemented through the Watch mechanism.Zookeeper allows the client to register a

Zookeeper Distributed Service Framework is a sub-project of Apache Hadoop, which is mainly used to solve some data management problems commonly encountered in distributed applications, such as: Unified Naming Service, State Synchronization service,

Zookeeper Distributed Service Framework is a sub-project of Apache Hadoop, which is mainly used to solve some data management problems commonly encountered in distributed applications, such as: Unified Naming Service, State Synchronization service,

From : http://www.ibm.com/developerworks/cn/opensource/os-cn-zookeeper/Zookeeper Distributed Service Framework is a sub-project of Apache Hadoop, which is mainly used to solve some data management problems commonly encountered in distributed

Transferred from: http://www.ibm.com/developerworks/cn/opensource/os-cn-zookeeper/Zookeeper Distributed Service Framework is a sub-project of Apache Hadoop, which is mainly used to solve some data management problems commonly encountered in