발급받은 카카오 인증 키가 개발자 도구-소스를 통해 그대로 보이더라구요ㅠㅠ 인증 키가 노출되어도 상관없나요? 코드를 암호화 하는 등 안보이게 하는 방법이 있을까요...?

강의 듣는 속도가 느려서 우선 전반적으로 어떤식으로 돌아가는지 파악하기 위해  전체 소스 코드 다운 후 압축 풀고 -> 파일을 드래그해서 인텔리제이에서 열었을때 오류가 발생했습니다. 따로 설정을 추가로 해줘야 하는부분이 있는지 궁금합니다.   혹시 몰라 오류 전문 올립니다 오후 5:20:43: Executing task 'JpashopApplication.main()'...   > Task :compileJava > Task :processResources > Task :classes   > Task :JpashopApplication.main()     .   ____          _            __ _ _  /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \  \\/  ___)| |_)| | | | | || (_| |  ) ) ) )   '  |____| .__|_| |_|_| |_\__, | / / / /  =========|_|==============|___/=/_/_/_/  :: Spring Boot ::                (v2.4.1)   2021-11-17 17:21:08.614  INFO 22472 --- [           main] jpabook.jpashop.JpashopApplication       : Starting JpashopApplication using Java 11.0.9 on DESKTOP-BOB4SV1 with PID 22472 (C:\Users\ujung\Desktop\gtest\jpashop-v20210728\build\classes\java\main started by ujung in C:\Users\ujung\Desktop\gtest\jpashop-v20210728) 2021-11-17 17:21:08.627  INFO 22472 --- [           main] jpabook.jpashop.JpashopApplication       : No active profile set, falling back to default profiles: default 2021-11-17 17:21:10.400  INFO 22472 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2021-11-17 17:21:10.445  INFO 22472 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 32 ms. Found 0 JPA repository interfaces. 2021-11-17 17:21:12.198  INFO 22472 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http) 2021-11-17 17:21:12.233  INFO 22472 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat] 2021-11-17 17:21:12.233  INFO 22472 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.41] 2021-11-17 17:21:12.517  INFO 22472 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext 2021-11-17 17:21:12.518  INFO 22472 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3708 ms 2021-11-17 17:21:12.977  INFO 22472 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default] 2021-11-17 17:21:13.161  INFO 22472 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.4.25.Final 2021-11-17 17:21:13.700  INFO 22472 --- [           main] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.2.Final} 2021-11-17 17:21:14.154  INFO 22472 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting... 2021-11-17 17:21:17.545 ERROR 22472 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.   org.h2.jdbc.JdbcSQLNonTransientConnectionException: Connection is broken: "java.net.SocketTimeoutException: connect timed out: localhost" [90067-200] at org.h2.message.DbException.getJdbcSQLException(DbException.java:622) ~[h2-1.4.200.jar:1.4.200] at org.h2.message.DbException.getJdbcSQLException(DbException.java:429) ~[h2-1.4.200.jar:1.4.200] at org.h2.message.DbException.get(DbException.java:194) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:439) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:321) ~[h2-1.4.200.jar:1.4.200] at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:173) ~[h2-1.4.200.jar:1.4.200] at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:152) ~[h2-1.4.200.jar:1.4.200] at org.h2.Driver.connect(Driver.java:69) ~[h2-1.4.200.jar:1.4.200] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.5.jar:na] at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.1.jar:2.4.1] at jpabook.jpashop.JpashopApplication.main(JpashopApplication.java:10) ~[main/:na] Caused by: java.net.SocketTimeoutException: connect timed out at java.base/java.net.PlainSocketImpl.waitForConnect(Native Method) ~[na:na] at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:107) ~[na:na] at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399) ~[na:na] at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242) ~[na:na] at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224) ~[na:na] at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403) ~[na:na] at java.base/java.net.Socket.connect(Socket.java:608) ~[na:na] at org.h2.util.NetUtils.createSocket(NetUtils.java:103) ~[h2-1.4.200.jar:1.4.200] at org.h2.util.NetUtils.createSocket(NetUtils.java:83) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:119) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:435) ~[h2-1.4.200.jar:1.4.200] ... 51 common frames omitted   2021-11-17 17:21:17.549  WARN 22472 --- [           main] o.h.e.j.e.i.JdbcEnvironmentInitiator     : HHH000342: Could not obtain connection to query metadata   org.h2.jdbc.JdbcSQLNonTransientConnectionException: Connection is broken: "java.net.SocketTimeoutException: connect timed out: localhost" [90067-200] at org.h2.message.DbException.getJdbcSQLException(DbException.java:622) ~[h2-1.4.200.jar:1.4.200] at org.h2.message.DbException.getJdbcSQLException(DbException.java:429) ~[h2-1.4.200.jar:1.4.200] at org.h2.message.DbException.get(DbException.java:194) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:439) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:321) ~[h2-1.4.200.jar:1.4.200] at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:173) ~[h2-1.4.200.jar:1.4.200] at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:152) ~[h2-1.4.200.jar:1.4.200] at org.h2.Driver.connect(Driver.java:69) ~[h2-1.4.200.jar:1.4.200] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.5.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.5.jar:na] at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.1.jar:2.4.1] at jpabook.jpashop.JpashopApplication.main(JpashopApplication.java:10) ~[main/:na] Caused by: java.net.SocketTimeoutException: connect timed out at java.base/java.net.PlainSocketImpl.waitForConnect(Native Method) ~[na:na] at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:107) ~[na:na] at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399) ~[na:na] at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242) ~[na:na] at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224) ~[na:na] at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403) ~[na:na] at java.base/java.net.Socket.connect(Socket.java:608) ~[na:na] at org.h2.util.NetUtils.createSocket(NetUtils.java:103) ~[h2-1.4.200.jar:1.4.200] at org.h2.util.NetUtils.createSocket(NetUtils.java:83) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:119) ~[h2-1.4.200.jar:1.4.200] at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:435) ~[h2-1.4.200.jar:1.4.200] ... 51 common frames omitted   2021-11-17 17:21:17.610 ERROR 22472 --- [           main] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] 2021-11-17 17:21:17.619  WARN 22472 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] 2021-11-17 17:21:17.631  INFO 22472 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat] 2021-11-17 17:21:17.674  INFO 22472 --- [           main] ConditionEvaluationReportLoggingListener :    Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2021-11-17 17:21:17.758 ERROR 22472 --- [           main] o.s.boot.SpringApplication               : Application run failed   org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.2.jar:5.3.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.1.jar:2.4.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.1.jar:2.4.1] at jpabook.jpashop.JpashopApplication.main(JpashopApplication.java:10) ~[main/:na] Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.2.jar:5.3.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.2.jar:5.3.2] ... 17 common frames omitted Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.25.Final.jar:5.4.25.Final] ... 34 common frames omitted     > Task :JpashopApplication.main() FAILED 3 actionable tasks: 3 executed   FAILURE: Build failed with an exception.   * What went wrong: Execution failed for task ':JpashopApplication.main()'. > Process 'command 'C:/Program Files/Java/jdk-11.0.9/bin/java.exe'' finished with non-zero exit value 1   * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.   * Get more help at https://help.gradle.org   BUILD FAILED in 33s 오후 5:21:18: Task execution finished 'JpashopApplication.main()'.  

Subject 5 - Workflow 실행시 3번째 하이브 쿼리문에서 에러가 발생합니다.   로그는  2021-11-17 17:08:05,939 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[] No results found 2021-11-17 17:08:06,056 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] Start action [0000000-211117134747764-oozie-oozi-W@:start:] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2021-11-17 17:08:06,089 INFO org.apache.oozie.action.control.StartActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] Starting action 2021-11-17 17:08:06,122 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] [***0000000-211117134747764-oozie-oozi-W@:start:***]Action status=DONE 2021-11-17 17:08:06,132 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] [***0000000-211117134747764-oozie-oozi-W@:start:***]Action updated in DB! 2021-11-17 17:08:07,005 INFO org.apache.oozie.action.control.StartActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] Action ended with external status [OK] 2021-11-17 17:08:07,619 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] No results found 2021-11-17 17:08:07,684 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@:start:] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@:start: 2021-11-17 17:08:07,688 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W 2021-11-17 17:08:07,828 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Start action [0000000-211117134747764-oozie-oozi-W@hive-537b] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2021-11-17 17:08:07,848 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Starting action. Getting Action File System 2021-11-17 17:08:07,931 INFO org.apache.oozie.service.HadoopAccessorService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Processing configuration file [/var/run/cloudera-scm-agent/process/274-oozie-OOZIE_SERVER/action-conf/default.xml] for action [default] and hostPort [*] 2021-11-17 17:08:07,966 INFO org.apache.oozie.service.HadoopAccessorService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Processing configuration file [/var/run/cloudera-scm-agent/process/274-oozie-OOZIE_SERVER/action-conf/hive2.xml] for action [hive2] and hostPort [*] 2021-11-17 17:08:16,679 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Invalid configuration value [null] defined for launcher max attempts count, using default [2]. 2021-11-17 17:08:16,703 INFO org.apache.oozie.action.hadoop.YarnACLHandler: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Not setting ACLs because mapreduce.cluster.acls.enabled is set to false 2021-11-17 17:08:20,280 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] checking action, hadoop job ID [application_1637124309648_0001] status [RUNNING] 2021-11-17 17:08:20,294 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] [***0000000-211117134747764-oozie-oozi-W@hive-537b***]Action status=RUNNING 2021-11-17 17:08:20,298 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] [***0000000-211117134747764-oozie-oozi-W@hive-537b***]Action updated in DB! 2021-11-17 17:08:20,312 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@hive-537b 2021-11-17 17:08:41,461 INFO org.apache.oozie.servlet.CallbackServlet: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] callback for action [0000000-211117134747764-oozie-oozi-W@hive-537b] 2021-11-17 17:08:41,990 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] action completed, external ID [application_1637124309648_0001] 2021-11-17 17:08:42,046 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] Action ended with external status [SUCCEEDED] 2021-11-17 17:08:42,469 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] No results found 2021-11-17 17:08:42,566 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] Start action [0000000-211117134747764-oozie-oozi-W@hive-6e14] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2021-11-17 17:08:42,592 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] Starting action. Getting Action File System 2021-11-17 17:08:47,110 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] Invalid configuration value [null] defined for launcher max attempts count, using default [2]. 2021-11-17 17:08:47,113 INFO org.apache.oozie.action.hadoop.YarnACLHandler: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] Not setting ACLs because mapreduce.cluster.acls.enabled is set to false 2021-11-17 17:08:48,576 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] checking action, hadoop job ID [application_1637124309648_0002] status [RUNNING] 2021-11-17 17:08:48,585 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] [***0000000-211117134747764-oozie-oozi-W@hive-6e14***]Action status=RUNNING 2021-11-17 17:08:48,587 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] [***0000000-211117134747764-oozie-oozi-W@hive-6e14***]Action updated in DB! 2021-11-17 17:08:48,601 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@hive-6e14 2021-11-17 17:08:48,603 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-537b] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@hive-537b 2021-11-17 17:10:36,799 INFO org.apache.oozie.servlet.CallbackServlet: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] callback for action [0000000-211117134747764-oozie-oozi-W@hive-6e14] 2021-11-17 17:10:37,091 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] External Child IDs : [job_1637124309648_0003] 2021-11-17 17:10:37,099 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] action completed, external ID [application_1637124309648_0002] 2021-11-17 17:10:37,175 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] Action ended with external status [SUCCEEDED] 2021-11-17 17:10:37,296 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] No results found 2021-11-17 17:10:37,408 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] Start action [0000000-211117134747764-oozie-oozi-W@hive-6e91] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2021-11-17 17:10:37,425 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] Starting action. Getting Action File System 2021-11-17 17:10:42,219 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] Invalid configuration value [null] defined for launcher max attempts count, using default [2]. 2021-11-17 17:10:42,222 INFO org.apache.oozie.action.hadoop.YarnACLHandler: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] Not setting ACLs because mapreduce.cluster.acls.enabled is set to false 2021-11-17 17:10:44,054 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] checking action, hadoop job ID [application_1637124309648_0004] status [RUNNING] 2021-11-17 17:10:44,060 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] [***0000000-211117134747764-oozie-oozi-W@hive-6e91***]Action status=RUNNING 2021-11-17 17:10:44,060 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] [***0000000-211117134747764-oozie-oozi-W@hive-6e91***]Action updated in DB! 2021-11-17 17:10:44,071 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@hive-6e91 2021-11-17 17:10:44,073 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e14] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@hive-6e14 2021-11-17 17:10:58,958 INFO org.apache.oozie.servlet.CallbackServlet: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] callback for action [0000000-211117134747764-oozie-oozi-W@hive-6e91] 2021-11-17 17:10:59,128 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] action completed, external ID [application_1637124309648_0004] 2021-11-17 17:10:59,132 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] Launcher ERROR, reason: Main Class [org.apache.oozie.action.hadoop.Hive2Main], exit code [2] 2021-11-17 17:10:59,174 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] Action ended with external status [FAILED/KILLED] 2021-11-17 17:10:59,186 INFO org.apache.oozie.command.wf.ActionEndXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] ERROR is considered as FAILED for SLA 2021-11-17 17:10:59,279 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] No results found 2021-11-17 17:10:59,329 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@Kill] Start action [0000000-211117134747764-oozie-oozi-W@Kill] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2021-11-17 17:10:59,342 INFO org.apache.oozie.action.control.KillActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@Kill] Starting action 2021-11-17 17:10:59,752 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@Kill] [***0000000-211117134747764-oozie-oozi-W@Kill***]Action status=DONE 2021-11-17 17:10:59,754 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@Kill] [***0000000-211117134747764-oozie-oozi-W@Kill***]Action updated in DB! 2021-11-17 17:10:59,780 INFO org.apache.oozie.action.control.KillActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 5 - Workflow] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@Kill] Action ended with external status [OK] 2021-11-17 17:10:59,925 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@Kill] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@Kill 2021-11-17 17:10:59,927 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W 2021-11-17 17:10:59,927 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000000-211117134747764-oozie-oozi-W] ACTION[0000000-211117134747764-oozie-oozi-W@hive-6e91] No Notification URL is defined. Therefore nothing to notify for job 0000000-211117134747764-oozie-oozi-W@hive-6e91 Log Type: prelaunch.err Log Upload Time: Wed Nov 17 17:11:00 +0900 2021 Log Length: 0     Log Type: prelaunch.out Log Upload Time: Wed Nov 17 17:11:00 +0900 2021 Log Length: 70 Setting up env variables Setting up job resources Launching container   Log Type: stderr Log Upload Time: Wed Nov 17 17:11:00 +0900 2021 Log Length: 4561 Showing 4096 bytes of 4561 total. Click here for the full log. aticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. Set system property 'org.apache.logging.log4j.simplelog.StatusLogger.level' to TRACE to show Log4j2 internal initialization logging. Connecting to jdbc:hive2://server02.hadoop.com:10000/default Connected to: Apache Hive (version 2.1.1-cdh6.3.2) Driver: Hive JDBC (version 2.1.1-cdh6.3.2) Transaction isolation: TRANSACTION_REPEATABLE_READ 0: jdbc:hive2://server02.hadoop.com:10000/def> USE default; INFO : Compiling command(queryId=hive_20211117171057_9409a0f0-f0c7-4196-a475-a9290b9eccdb): USE default INFO : Semantic Analysis Completed INFO : Returning Hive schema: Schema(fieldSchemas:null, properties:null) INFO : Completed compiling command(queryId=hive_20211117171057_9409a0f0-f0c7-4196-a475-a9290b9eccdb); Time taken: 0.338 seconds INFO : Executing command(queryId=hive_20211117171057_9409a0f0-f0c7-4196-a475-a9290b9eccdb): USE default INFO : Starting task [Stage-0:DDL] in serial mode INFO : Completed executing command(queryId=hive_20211117171057_9409a0f0-f0c7-4196-a475-a9290b9eccdb); Time taken: 0.016 seconds INFO : OK No rows affected (0.542 seconds) 0: jdbc:hive2://server02.hadoop.com:10000/def> 0: jdbc:hive2://server02.hadoop.com:10000/def> insert overwrite local directory '/home/pilot-pjt/item-buy-list' . . . . . . . . . . . . . . . . . . . . . . .> ROW FORMAT DELIMITED . . . . . . . . . . . . . . . . . . . . . . .> FIELDS TERMINATED BY ',' . . . . . . . . . . . . . . . . . . . . . . .> select car_number, concat_ws("," , collect_set(item)) . . . . . . . . . . . . . . . . . . . . . . .> from managed_smartcar_item_buylis t_info . . . . . . . . . . . . . . . . . . . . . . .> group by car_number . . . . . . . . . . . . . . . . . . . . . . .> Error: Error while compiling statement: FAILED: RuntimeException Cannot create staging directory 'hdfs://server01.hadoop.com:8020/home/pilot-pjt/item-buy-list/.hive-staging_hive_2021-11-17_17-10-57_746_3560942864087896700-3': Permission denied: user=admin, access=WRITE, inode="/":hdfs:supergroup:drwxr-xr-x at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:400) at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:256) at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:194) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkPermission(FSDirectory.java:1855) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkPermission(FSDirectory.java:1839) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkAncestorAccess(FSDirectory.java:1798) at org.apache.hadoop.hdfs.server.namenode.FSDirMkdirOp.mkdirs(FSDirMkdirOp.java:61) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3101) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:1123) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:696) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:869) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:815) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1875) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2675) (state=42000,code=40000) Closing: 0: jdbc:hive2://server02.hadoop.com:10000/default   Log Type: stdout Log Upload Time: Wed Nov 17 17:11:00 +0900 2021 Log Length: 198282 Showing 4096 bytes of 198282 total. Click here for the full log. launch_container.sh jetty-jndi-9.3.25.v20180904.jar jersey-container-servlet-core-2.25.1.jar datanucleus-core-4.1.6.jar asm-tree-6.0.jar ------------------------ Script [hive-6e91.sql] content: ------------------------ USE default; insert overwrite local directory '/home/pilot-pjt/item-buy-list' ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' select car_number, concat_ws("," , collect_set(item)) from managed_smartcar_item_buylist_info group by car_number ------------------------ Beeline command arguments : -u jdbc:hive2://server02.hadoop.com:10000/default -n admin -p DUMMY -d org.apache.hive.jdbc.HiveDriver -f hive-6e91.sql -a delegationToken --hiveconf mapreduce.job.tags=oozie-418ffadb1764d24a19ec7f0c02056574 --hiveconf oozie.action.id=0000000-211117134747764-oozie-oozi-W@hive-6e91 --hiveconf oozie.child.mapreduce.job.tags=oozie-418ffadb1764d24a19ec7f0c02056574 --hiveconf oozie.action.rootlogger.log.level=INFO --hiveconf oozie.job.id=0000000-211117134747764-oozie-oozi-W --hiveconf oozie.HadoopAccessorService.created=true Fetching child yarn jobs tag id : oozie-418ffadb1764d24a19ec7f0c02056574 No child applications found ================================================================= >>> Invoking Beeline command line now >>> <<< Invocation of Beeline command completed <<< No child hadoop job is executed. java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.oozie.action.hadoop.LauncherAM.runActionMain(LauncherAM.java:410) at org.apache.oozie.action.hadoop.LauncherAM.access$300(LauncherAM.java:55) at org.apache.oozie.action.hadoop.LauncherAM$2.run(LauncherAM.java:223) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1875) at org.apache.oozie.action.hadoop.LauncherAM.run(LauncherAM.java:217) at org.apache.oozie.action.hadoop.LauncherAM$1.run(LauncherAM.java:153) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1875) at org.apache.oozie.action.hadoop.LauncherAM.main(LauncherAM.java:141) Caused by: java.lang.SecurityException: Intercepted System.exit(2) at org.apache.oozie.action.hadoop.security.LauncherSecurityManager.checkExit(LauncherSecurityManager.java:57) at java.lang.Runtime.exit(Runtime.java:107) at java.lang.System.exit(System.java:971) at org.apache.oozie.action.hadoop.Hive2Main.runBeeline(Hive2Main.java:273) at org.apache.oozie.action.hadoop.Hive2Main.run(Hive2Main.java:250) at org.apache.oozie.action.hadoop.LauncherMain.run(LauncherMain.java:104) at org.apache.oozie.action.hadoop.Hive2Main.main(Hive2Main.java:65) ... 16 more Intercepting System.exit(2) Failing Oozie Launcher, Main Class [org.apache.oozie.action.hadoop.Hive2Main], exit code [2] Oozie Launcher, uploading action data to HDFS sequence file: hdfs://server01.hadoop.com:8020/user/admin/oozie-oozi/0000000-211117134747764-oozie-oozi-W/hive-6e91--hive2/action-data.seq Stopping AM Callback notification attempts left 0 Callback notification trying http://server02.hadoop.com:11000/oozie/callback?id=0000000-211117134747764-oozie-oozi-W@hive-6e91&status=FAILED Callback notification to http://server02.hadoop.com:11000/oozie/callback?id=0000000-211117134747764-oozie-oozi-W@hive-6e91&status=FAILED succeeded Callback notification succeeded 이렇습니다.   무슨 문제일까요 ㅜㅜ 다른분 게시물에 나와있는 디렉토리 만들고 권한 변경은 이미 진행해보았지만 변화가 없었습니다.

안녕하세요.   taskExcecutor 지정해서 muti 쓰레드로 실행시 어플리케이션 종료되지 않는데 이건 taskExecutor 내부적으로 뭔가가 떠있어서 그런건가요?   taskExcecutor 지정 안했을 때는 정상 종료됩니다.

안녕하세요 메일 소식받고 코멘트 남깁니다~!    강좌 수강할 의향 있습니다!

하루전까지 잘 되었는데 갑자기 이런 오류가 떴습니다. JpashopApplication에서 실행했을때 오류 전문입니다. "C:\Program Files\Java\jdk-11.0.9\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.3\lib\idea_rt.jar=56326:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.3\bin" -Dfile.encoding=UTF-8 jpabook.jpashop.JpashopApplication Error: Could not find or load main class jpabook.jpashop.JpashopApplication Caused by: java.lang.ClassNotFoundException: jpabook.jpashop.JpashopApplication   Process finished with exit code 1 ---------------------------------------------------   이런 경우 어떤 식으로 디버깅을 해야하는지 궁금합니다.

h1뒤에 h2~h6만들때 cmd+v 입력하라고 하셨는데 윈도우에서는 어떤 키인가요?

우선 풀이를 보지 않고 작성한 코드입니다. import sys sys.stdin=open("input.txt", "rt")   n,m=map(int, input().split()) a=list(map(int, str(n))) b=[] x=1 while x:     b.append(a[0])     a.pop(0)     if len(a)==0:         break     while b[-1]<a[0]:         b.pop(-1)         m-=1         if len(b)==0:             break         elif m==0:             for i in range(len(a)):                 print(a[i])                 b.append(a[i])             x=0             break   if m>0:     for i in range(m):         b.pop(-1)   for x in b:     print(x, end='')   채점시 case #04 에서만 wrong answer가 뜨는데, 중간에 while문 안에서 m==0 일때 break가 안드네요. 일시적인 오류인건가 하는데 이해가 안가서요.   

그 클래스 메소드와 스태틱메소드의 실사용례는 이러할까요? 약간 스태틱메소드는 상속받아도 변하지 않는 것과 관련된 메소드에 사용하고 클래스메소드는 상속받으면 변할 수 있는것과 관련되 메소드에 사용하는?   이에 대한 이해는 이부분 을 참고했습니다. # Online Python compiler (interpreter) to run Python online. # Write Python 3 code in this online editor and run it. class wooden_furniture: ingredient = "wooden" furniture = "furniture" @staticmethod def get_ingredient(): print("made_by_wooden") return "made_by_wooden" @classmethod def get_furniture(cls): print( f"{cls.furniture}") return "class" class wooden_table(wooden_furniture): def __init__(self): self.furniture = "table" table = wooden_table() furniture = wooden_furniture() table.get_ingredient() table.get_furniture() furniture.get_ingredient() furniture.get_furniture()

예제 파일이 없습니다. 예제 화면이 나오지 않습니다.

강사님 잘 보고 배우고 있습니다, 감사합니다. 반응형 관련해서 모바일 가로, 세로 모드일 때도 비율 잘 유지하면서 구현 하려면 어떻게 해야하는지는 어느정도 알고 있는데 개인적으로 정답이 필요한 친구인데요. 많이 찾아봤지만 제 맘에는 안들었어서 강사님께서는 어디서 정보를 얻으셨는지 등을 여쭤볼 수 있을까요?   breack-point를 잡아주고 미디어 쿼리문 내에서 계속 지정해 주면 코드가 너무 길어서 찾기도 힘들고 좀 별로였던걸로 기억합니다. 스타일링 가이드에 대한 해법을 찾을 만한 간단한 말씀을 해 주실수 있을까요?

class Player     {         static private int counter = 1;         private int id;         private bool isDespose = false;         public int GetCounter() { return counter; }         public int GetId() { return id; }         public Player()         {             id = counter;             counter++;         }           ~Player()         {             if (!isDespose)                 Dispose();         }           public void Dispose()         {             isDespose = true;             Console.WriteLine("{0}ID 삭제 Ok....", id);             GC.SuppressFinalize(this);         }     }     class TestSample     {         static void Main(string[] args)         {             Player player1 = new Player();             Console.WriteLine(player1.GetId());              Player player2 = new Player();             Console.WriteLine(player2.GetId());             Player player3 = new Player();             Console.WriteLine(player3.GetId());             Player player4 = new Player();             Console.WriteLine(player4.GetId());             player4.Dispose();             Player player5 = new Player();             Console.WriteLine(player5.GetId());             Console.WriteLine(player4.GetId());               for(int i=0; i<5;i++)                 Console.WriteLine(i);         }     } 만일 객체를 제거하면 어떤가 궁금해서 소멸자로 지워보았습니다. 이럴 경우에 4번째를 제거해도 ID는 4로 남아있습니다. 그렇다고 당기면 다른 계정의 ID들이 바뀌니 안될것같은데 이런 제거하는 계정은 어떻게 처리를하나요~?

첫 번째. logic을 작성하는 이유   두 번째. singleton이 DIP를 위반하는 이유 내 생각 : singleton pattern을 통해 생성한 object를 적용하기 위해선 AppConfig의 memberService와 같은 interface를 변경해야하므로 DIP를 위반한다. (혹시 이게 맞는지.. 확인 하고 싶습니다)

react router dom 에서 Link만 아래처럼 가져다 쓰면 ..에러가 나는데 리액트 라우터는 원래 route로 감싸줘야되지 않나요 ..? 강사님은 그냥 쓰셔서 그대로 저도 사용했는데 ... 혹시 이 부분은 App.js에서 connected router가 잘 연결이 안돼서 그런걸까요 ? 아니면 노드 버전떄문에 충돌나서 그런걸까요 ..? 노드 버전은 16.13.0입니다   검색해보니 connected-react-router가 노드버전이랑 충돌이 좀 나는거같은데...강사님 진행은 노드 몇버전으로 하시는걸까요 ?   이런 에러가 납니다 Error: useHref() may be used only in the context of a <Router> component.   <Link to="/"></Link>   <ConnectedRouter history={history}> <- App.js 이부분 때문에 연결이 잘 안돼서 에러가 나는지 ...  

'number' 형식에 'map' 속성이 없습니다.    {Continents.map((item) => (             <option key={item.key} value={item.key}>               {item.value}             </option>           ))}   여기서 continents가 number 타입이라 map 이 지원이 안된다는데... 어떻게 하나요??

정적 팩토리 메서드와 코드가 엄청 유사한데 객체 생성을 위한 메서드로 이해하면 될까요??

안녕하세요 모듈 프로그래밍을 통해 디바이스 드라이버를 임의로 하나 만들 수 있다는 것을 이해했습니다 특히 디바이스 드라이버가 처리할 system call 구현 부분에서 취약점을 넣는 방식으로 실습 및 테스트가 진행되는 것 같습니다.   궁금한 사항은, 흔히 "커널 취약점"이라고 부를 때 "디바이스 드라이버 취약점"과 동일한 표현인가요? 아니면 디바이스 드라이버 외에도 커널의 다른 부분에 취약점이 존재할 수 있나요? 있다면 어떤 종류가 있을까요?  본 강의에서는 대부분 디바이스 드라이버 내부의 취약점만을 위주로 다루는 것이 맞나요?

강의에서 input의 자료형으로 long을 사용하셨는데  int와 long의 데이터 범위가 같은 것으로 알고있는데 혹시 차이가 있나요?   (signed)long(int)로 알고 있는데 제가 잘못 알고 있는 건가요?

안녕하세요 질문이 있어 글 올립니다. LB를 생성 후 외부 IP를 부여 받은 상황에서 client가 LB의 외부IP:80으로 요청을 하면 traffic flow가 LB:80 > NodeIP:NodePort > Iptables > DNAT > Pod 로 도착하는게 맞나요? (kube-proxy 모드는 iptables 라고 가정했을시) 아니면 CNI PlugIN에 따라서 이 부분도 달라지나요? GKE에서 확인했을떄 GCP에서 제공하는 Firewall에서는 NodePort관련해서 Open되어있지 않은상황이며 (open되어있지 않아도 pod까지 연결이 잘되는 상황입니다.) LB:80 > NodeIP:80 > Iptables > DNAT > Pod 이러한 흐름으로 pod까지 연결되는것 같은데 (방화벽은 기본 all deny인 상태입니다. ) 이런식으로도 흘러갈 수 있는지가 궁금합니다!    

버퍼에 \n이 남아있는 거는 이해가 됩니다. 그런데 그렇기 때문에 다음 입력 받을 때 %c에 \n이 입력 되는데 그러면 프로그램이 종료되어야 한다고 생각이 들어서요. 실제로 제가 선생님과 똑같이 쓴 코드로 실행시키면 c == \n이 되어 프로그램이 종료됩니다. 그런데 강의에서는 b 1 2를 입력했을 때 \n이 여러번 반복된 후에 제대로 실행이 되더라고요. 그렇게 되는 이유를 잘 모르겠습니다. ㅠㅠ