Tag：task
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Time：2021-9-17
Introduction: This article is shared by Alibaba technical expert Zhou Kaibo (baoniu), which mainly introduces how to run through the first SQL. 1、 Basic concepts of SQL 1. SQL classification SQL is divided into four categories: Data Query Language (DQL), data manipulation language (DML), data definition language (DDL) and data control language (DCL). Today we […]
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Time：2021-9-15
Introduction:The dataworks Migration Assistant provides the function of task relocation and supports the rapid migration of tasks from open source scheduling engines oozie, Azkaban and airflow to dataworks. This paper mainly introduces how to migrate jobs from open source Azkaban workflow scheduling engine to dataworks. The dataworks Migration Assistant provides the function of task relocation […]
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Time：2021-9-15
Process scheduling is that the process in thread state obtains the use right of CPU, and the process changes from ready state to running state. Process scheduling can be divided into: The preemptive system will schedule according to the priority of processes, and processes can jump in lineThe non preemptive system is scheduled according to […]
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Time：2021-9-15
The main performance of Caton is that the main thread is stuck and does not respond to the user’s action or response is very slow. This experience is very poor, which will make the user’s recognition of the product decline rapidly. If it is not optimized in time, it will eventually lead to the loss […]
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Time：2021-9-14
Problem description In order to solve the problems of callback hell caused by multi-layer nesting of front-end asynchronous functions and inconvenient capture of callback hell errors. Therefore, those big guys who make rules have added a new function promise in ES6. This article mainly records the application scenarios of promise.all and promise.race and gives examples. […]
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Time：2021-9-14
Introduction:Dataworks provides the function of task relocation and supports the rapid migration of tasks from open source scheduling engines oozie, Azkaban and airflow to dataworks. This paper mainly introduces how to migrate jobs from the open source airflow workflow scheduling engine to dataworks Dataworks provides the function of task relocation and supports the rapid migration […]
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Time：2021-9-13
Introduction: This article is shared by Alibaba technical expert Jing lining (Yantian). It mainly introduces how to migrate Flink tasks to real-time computing Flink. Usually, users mainly use Flink run offline, which will cause some problems. For example, the same configuration changes due to the version; Unable to quickly switch between different versions; Cannot recover […]
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Time：2021-9-12
React source code analysis 15. Scheduler & Lane Video course (efficient learning): enter the course Course Directory: 1. Introduction and interview questions 2. Design concept of react 3. React source code architecture 4. Source directory structure and debugging 5. JSX & Core API 6. Legacy and concurrent mode entry functions 7. Fiber architecture 8. Render […]
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Time：2021-9-10
Introduction: This paper introduces some features of Flink 1.12 resource management, including memory management, resource scheduling and extended resource framework.This article is compiled by Chen Zhengyu, a community volunteer, shared by song Xintong, a technical expert of Apache Flink Committee and Alibaba, Apache Flink contributor and Guo Minze, a senior development engineer of Alibaba. It […]
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Time：2021-9-10
1： Scenes that need to be selected 1: The service has multiple machines, one of which is used to perform the task. If multiple machines execute at the same time, there will be problems. For example, take out the failed records in the database and execute them again. If multiple machines execute at the same […]
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Time：2021-9-10
Introduction: This article is shared by JD search algorithm architecture team. It mainly introduces the application practice of Apache Flink in JD commodity search and sorting online learning 1、 Background In Jingdong’s commodity search and sorting, we often encounter the problem that the lack of diversity of search results leads to the non optimal solution […]
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Time：2021-9-10
Introduction:Cblue (Chinese biomedical language understanding evaluation benchmark) includes four common medical natural language processing tasks: medical text information extraction, medical terminology standardization, medical text classification and medical question and answer. 1. Introduction With the continuous development of artificial intelligence (AI) technology, more and more researchers begin to pay attention to the research and application of […]
