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Inspiration for this article: https://blog.csdn.net/qq_43613793/article/details/104268536 Thank the blogger for providing learning articles! brief introduction Echarts is a data visualization open source by Baidu. With good interactivity and exquisite chart design, echarts has been recognized by many developers. Python is an expressive lang ...

background In some application scenarios, you need to quickly load a large amount of data into the PostgreSQL database, such as database migration, SQL log analysis, etc. How many ways to quickly insert data on PG? What is the efficiency of each scheme? How can I tune for faster data loading? Scene setting SQL log analysis is a tool for coll ...

Detailed use of Flink 1. Installation and deployment install Step 1: add flink-1.10.1-bin-scala_2.12.tgz upload to the server and decompress Step 2: modify the conf/flink-conf.yaml file # Modify the jobmanager.rpc.address parameter to the jobmanager machine jobmanager.rpc.address: hadoop151 Step 3: modify the conf / slave file # slave ma ...

Advances in flume learning Flume Transactions The primary purpose is to ensure data consistency, either with success or with failure. Transaction schematics Flume Agent Internal Principles To summarize: That is to say Source Collected in event Not directly to channel Instead, a ChannelProcessor,this processor Will let us event Goes ...

About Zeppelin Zeppelin is a Web-based notebook that supports data-driven, interactive data analysis and collaboration using SQL, Scala, Python, R, and so on. Zeppelin supports multiple language backends, and the Apache Zeppelin interpreter allows any language/data processing backend to be inserted into Zeppelin. Currently, Apache Zeppelin s ...

1 Preface Hi, everyone, this is senior student Dan Cheng. Today I'd like to introduce a project to you Emotional analysis of film review based on GRU You can use it for graduation design Bi design help, problem opening guidance, technical solutions 🇶746876041 2 project introduction This example will analyze and visualize the meteorol ...

[questions] Recently, a website needs to obtain json data from the api of another website and store it in its own database. But I know nothing about json operation, so please consult your great God. No more nonsense. The code is as follows json file content I have cleaned up most of the data with the same structure: (mainly imei's Service) &nb ...

Table association concept Table represents an entity in life, such as department table dept and employee table emp. Table association represents the relationship between tables, such as department and employee, commodity and commodity classification, teacher and student, classroom and student. At the same time, we should also know that table ...

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 1, The role of hadoop? What is hadoop? Hadoop is an open source framework that can write and run distributed applications to process large-scale data. It is designed for offline and larg ...

​ 1. Introduction In some usage scenarios, the user will partition the table by day and perform routine tasks regularly every day. At this time, the user needs to manually manage the partition. Otherwise, the data import may fail because the user does not create a partition, which brings additional maintenance costs to the user. Through the ...