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Preface Common interview questions: How to use a linux directive to find a process with a specified name and kill it Three commands commonly used to kill processes: killall, kill, pkill Several ways to kill a process The killall command is used to kill processes by name. killall [parameter] [process name] The kill Command kills the p ...

In NLP tasks, the training data is usually one sentence (Chinese or English), and each step of input sequence data is one letter. We need to preprocess the data: first use the unique heat code for these letters, and then input it into RNN. For example, the letter a represents (1, 0, 0, 0,...) , 0), the letter b is (0, 1, 0, 0 , 0). If only the ...

Based on the previous blog, An introduction to the log framework of the SpringBoot series and its principles After the blog, this blog can help you learn about Springboot by providing a more detailed description of the specific use of the blog framework as a usage manual @[toc] 1. SpringBoot Log Level 1) Introduction to Log Level Briefly introd ...

1. Simple use Only one jar package of log4j needs to be imported, and the log4j.properties configuration file under the src directory will be loaded by default 1. Print log to console log4j.properties configuration file content #Set the log level to info and output to the console log4j.rootLogger=info,console log4j.appender.console = org ...

1. Project Background Traditional data warehouse organization structure is designed for OLAP (Online Transaction Analysis) requirements of offline data. The common way to import data is to use sqoop or spark timer jobs to import business database data into warehouses one by one.With the increasing requirement of real-time in data analysis, hou ...

Let's explore how to obtain accumulator monitoring again. Let's follow the screenshot to find out: 1.2. Then we find the node.js rendering module index.js fileFind out here that the data processing and writing of the Flink web front end is so complicated. Are those developers deliberately writing so complex that we can't understand it? 3. Know ...

1. Kafka message producer 1) Create the springboot Kafka producer demo project and import the jar package. <dependency> <groupId>org.springframework.kafka</groupId> <artifactId>spring-kafka</artifactId> <version>2.4.5.RELEASE</version> </dependency> 2) Add Kafka producer configuration it ...

Encrypt script first: import org.apache.commons.codec.binary.Base64; import java.io.ByteArrayOutputStream; import java.security.Key; import java.security.KeyFactory; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.security.PrivateKey; import java.security.PublicKey; import java.security.Signature; i ...

phenomenon There are two clusters A and B on the line, which are configured with two-way synchronization and single activity, i.e. only one cluster will be visited at a certain time by the business layer.A lot of exceptions have been reported in the regionserver log of Cluster A recently, but the monitoring page is working and functionality is ...

I. Preface Do a simple Lucene CRUD test, record 2, Code + effect 1. Index batch generation Generate several indexes in batch for later testing Code 1. package com.cun.test; import java.nio.file.Paths; import org.apache.lucene.analysis.Analyzer; import org.apache.lucene.analysis.cn.smart.SmartChineseAnalyzer; import org.apache.lucene.an ...