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In order to explore the mystery and greatness of Hive, we embarked on the road of learning Hive, the good and bad of this tool, let alone install Hive first... We use MySQL to store Hive's metadata Metastore, so install MySQL first. The specific ...

In the previous chapter: java Wechat Public Development (Original Text - Message Management) Since it is the development of public numbers, of course, it will involve our web side. After learning the previous chapters, the little friends will find th ...

Flink Notes-Delayed Data Processing Out Of Order&Late AllowedLateness&OutputTag On Output Tag Flink's window processing streaming data provides a WaterMark mechanism based on EventTime, but it can only solve the problem of data disorder ...

The configuration of zoo in the D: zookeeper-3.4.14 conf directory in the zookeeper-3.4.14 file is as follows # The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take init ...

1. Introduction to Tomcat Services Tomcat server is a free, open source Web application server. It is a lightweight application server and is widely used in small and medium-sized systems and in situations where concurrent access to users is not very common. It is the preferred choice for developing and debugging JSP programs.Generally speakin ...

This is the fourth article in the series of spring-cloud-kubernetes. The main content is to deploy two applications on kubernetes: Web-Service and Acount-Service. Web-Service calls the http service provided by Account-Service through the registration discovery capabilities provided by spring-cloud-kubernetes. List of Series Articles Official d ...

Let's implement a complex case. Find out the best friends between two. A:B,C,D,F,E,O B:A,C,E,K C:F,A,D,I D:A,E,F,L E:B,C,D,M,L F:A,B,C,D,E,O,M G:A,C,D,E,F H:A,C,D,E,O I:A,O J:B,O K:A,C,D L:D,E,F M:E,F,G O:A,H,I,J /* The map function in the first st ...

Preface Kafka is a message queue product. Based on Topic partitions design, it can achieve very high performance of message sending and processing. Spring created a project called Spring-kafka, which encapsulates Apache's Kafka-client for rapid integration of Kafka in Spring projects. In addition to simple messaging, Spring-kafka also provides ...

1. What is Flume: Flume is a highly available, highly reliable, distributed system for collecting, aggregating and transferring massive logs provided by Cloudera. Flume is based on streaming architecture, flexible and simple. Flume Composition A ...

The actual behavior of the Tomcat server: Because: Enter in the browser's address bar: localhost:8080/ProjectName / resource path Where the resource path: It's the resource path in @WebServlet("/demo3") 1. Through this path, the class poi ...