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Welcome to the blog home page: Wechat search: Import_ Bigdata, hard core original author in big data field_ import_bigdata_ CSDN blog Welcome to like, collect, leave messages, and exchange messages!This article was originally written by [Wang Zhiwu] and started on CSDN blog!This article is the first CSDN forum. It is strictly prohibited to ...

Welcome to the blog home page: Wechat search: Import_ Bigdata, hard core original author in big data field_ import_bigdata_ CSDN blog Welcome to like, collect, leave messages, and exchange messages!This article was originally written by [Wang Zhiwu] and started on CSDN blog!This article is the first CSDN forum. It is strictly prohibited to repr ...

Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it preface Recently, I followed the dark horse programmer to learn the request crawler and successfully completed the batch processing of NCBI documents. The problem is that the crawling eff ...

1, Continuous problem The following data are the low carbon emissions received by users in ant forest id dt lowcarbon 1001 2021-12-12 123 1002 2021-12-12 45 1001 2021-12-13 43 1001 2021-12-13 45 1001 2021-12-13 23 1002 2021-12-14 45 1001 2021-12-14 230 1002 2021-12-15 45 1001 2021-12-15 23 ... ... Find out the users who have receiv ...

preface Relationship between Table and SQL: SQL is the inheritance encapsulation of Table (this point is in Flink concept For example, StreamTableEnvironment can be embodied by inheriting from TableEnvironment. Therefore, the use of tables in official documents can be reflected in SQL, such as user-defined functions, Table API & custom fun ...

Hello, I'm brother Tu. At present, he works as a big data algorithm engineer in a large Internet factory. Today, a fan sent a message in the group asking if there is any information about Flink DDL, saying that he is a new learner. In order to let this fan quickly learn how to use Flink DDL, I will explain the principle and attach the actu ...

3.1 Introduction to Service Governance Think about a question first  With the actions in the previous chapter, we can already make calls between micro services.But we take the network address of the service provider ( ip Hardcoded into your code, such as ports, has many problems: Once the service provider address cha ...

What is a DATABASE Efficient media for storing and processing data (disk and memory) It is a warehouse built on computer storage equipment to organize, store and manage data according to data structure. In short, it can be regarded as an electronic filing cabinet - the place where electronic files are stored. Users can add, intercept, update, ...

When I read other blogs before, I found that there are two views in the defect analysis of kafka consumer's RoundRobin. One is that if the themes of consumer consumption in the consumer group are different or the number of consumer threads is different, the number of consumer consumption partitions will be inclined; Another view is that the dis ...

How to calculate user retention problems with sql 1, Retained 1. Meaning of retention: Retained: refers to the number of users who arrive at the APP on the base date and return to the APP on the next n days; Retention rate = number of users returned on the day n days after the base date / number of users on the base date * 100% Or refers t ...