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01 introduction In the previous blog, we learned the advanced features of Flink. Interested students can refer to the following: Flink tutorial (01) - Flink knowledge mapFlink tutorial (02) - getting started with FlinkFlink tutorial (03) - Flink environment constructionFlink tutorial (04) - getting started with FlinkFlink tutorial (05) - ...

background Received alarm, content: MySQL_ The master-slave replication delay is too high (example: XXXX), current value: 1032.00, threshold: 1000 - 100000000, occurrence time: 12 / 30 / 2021 02:27:16. Analysis process Generally, in case of replication delay, let's first look at the replication status and active session of the slave library. ...

1. Brief description Today, let's introduce TreeMap. TreeMap is a Map based on red black tree structure.What is red and black number?(1) Each node must be red or black;(2) The root node is black;(3) Each leaf node (NIL node, empty node) is black;(4) If a node is red, its two byte points are black, that is, two adjacent red nodes cannot appear ...

Statement: the pictures and model materials involved in this article are only used for personal learning, research and appreciation. Please do not modify, illegally spread, reprint, publish, commercialize or engage in other profitable activities.backgroundIn three JS journey course Examples In, a method is provided to use three JS built-in meth ...

Vue introduction What is vue? Build user interface It is very convenient to fill data into html pages with vue frame Framework is a ready-made solution. Programmers can only abide by the specifications of the framework and write their own business functions!To learn vue is to learn the usage specified in the vue framework!vue instructio ...

If rem is often used in the project, set the font size of the root node html automatically. Because the REM unit is relative to the font size of the root node, the size of REM can be changed dynamically by setting the font size of the root node. But px is common. What good method can automatically convert it into REM. The answer is yes. Vue c ...

Ceph operation 1. Prepare the machine CentOS7The configuration of four virtual machines (4C/4G/50G/50G) is for my practice. Please use it according to the actual situation in production 2. The virtual machine is assigned as follows host nameroleipNATCephAdminceph-deploy+client192.168.3.189192.168.122.189ceph01mon+osd192.168.3.190192.168.122 ...

Vue stepping on the pit notes: repair record of packaging failure when importing ElementUI (error in. / node_modules / element UI / lib / theme chat / index.css module build failed: modulebuilderror: module build failed: typeerror: this.getoptions is not a function) Article catalogue Vue stepping on the pit notes: repair record of packaging f ...

preface Sometimes, when you don't understand the way Spring manages Bean, you may encounter various problems, such as calling a method of Bean object in the container, such as: @Service public class MyServiceImpl { @Resource private UserServiceImpl userService; public MyServiceImpl() { userService.method(); } ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tutorials/84Article address: http://www.showmeai.tech/article-detail/180Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the source1.Spark machine learning workflow1) Spark mllib and mlSpark also has MLlib/ML for big data machine ...