Definition of Yarn

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Yarn is the resource management system of Hadoop 2.0. It is a general resource module that manages and schedules resources for applications. Yarn can be used in the MapReduce framework as well as other frameworks such as Tez, Spark, and Storm.

Other related questions:
What is the concept of Yarn?
Yarn is the resource management system of Hadoop 2.0. It is a general resource module that manages and schedules resources for applications. Yarn can be used in the MapReduce framework as well as other frameworks such as Tez, Spark, and Storm.

What is Yarn used for?
Yarn is the resource management system of Hadoop 2.0. It is a general resource module that manages and schedules resources for applications. Yarn can be used in the MapReduce framework as well as other frameworks such as Tez, Spark, and Storm.

Definition of Kafka
Kafka is a distributed, partitioned, and replicated message publishing and subscription system that provides features similar to the Java Message Service (JMS). Kafka features message persistence, high throughput, distribution, multi-client support, and real-time processing, and applies to online and offline message consumption. It is ideal for Internet service data collection scenarios, such as conventional data collection, active website tracing, aggregation of operation data in statistics systems (monitoring data), and log collection.

Definition of Tomcat
Tomcat is a free-of-charge, lightweight, open source web application server developed by Apache Software Foundation, Sun and other companies, and individuals. Gaining support from Sun, Tomcat complies with the latest Servlet and JavaServer Page (JSP) specifications. It features advanced technology, stable performance, and good scalability, and occupies a small number of system resources during running. As a result, Tomcat applies to small- and medium-sized systems and scenarios with a few concurrent users. An HTTP server embedded in Tomcat enables Tomcat to work as a web server. It provides a configuration management tool and supports XML configuration files. Tomcat is different from the Apache web server, which is an HTTP server using C language.

Definition of Flume
Flume is a distributed, highly reliable, and HA massive log aggregation system. It supports custom data transmitters for data collection. Flume also processes data roughly and writes data to customizable receivers.

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