先上代码: table = tablexx.select('*).tablexx.groupBy('x).select('x, xx.count ) tableEnvironment // declare the external system to connect to .connect( new Kafka() .version("0.10") .topic("test-input") .startFromEarliest() .property("z…
service mysqld start 报错 090517 13:34:15 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 090517 13:34:15 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist 090517 13:34:15 mysq…
SpringBoot启动报错如下 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2019-05-06 21:27:18.275 ERROR 10968 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** AP…
运行项目报错 Error querying database. Cause: java.sql.SQLException: No suitable driver found for http://www.example.com org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: No suitable driver found f…
报错现象: Exception in thread "main" java.lang.NoClassDefFoundError: Lorg/apache/hadoop/fs/FileSystem; at java.lang.Class.getDeclaredFields0(Native Method) at java.lang.Class.privateGetDeclaredFields(Class.java:2583) at java.lang.Class.getDeclaredFi…
1. 问题背景         InnoDB是新版MySQL(v5.5及以后)默认的存储引擎,之前版本的默认引擎为MyISAM,因此,低于5.5版本的mysql配置文件.my.cnf中,关于InnoDB的配置默认是被注释起来的.在实际使用时,发现不少人只是把mysql的配置文件拷贝到需要的路径下后,就启动mysqld,而建表时偏偏又指定engine=innodb.正常情况下,即使不显式配置innodb引擎的参数,该引擎也可以使用(因为MySQL会采用默认的innodb engine参数来管理对应…
环境: openSUSE42.2 hadoop2.6.0-cdh5.10.0 spark1.6.0-cdh5.10.0 按照网上的spark安装教程安装完之后,启动spark-shell,出现如下报错: 报错信息: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream at org.apache.spark.deploy.SparkSubmitA…
使用eclipse导入别人的项目时候,报错Unable to load annotation processor factory 'xxxxx.jar' for project. 解决方案 1.项目右键——Properties 2.Java Compiler——Annotation Procession——Factory Path 3.Apply 现在正常了. 参考资料 Unable to load annotation processor factory…
step1:查看 1.1 Mysql命令行里输入"show engines:"查看innoddb数据引擎状态, 1.2 show variables "%_buffer%"里查看innodb_buffer_pool_size的数值,默认是8M(太小,需要改大一点!) step2:找配置文件,修改innodb_buffer_pool_size=64M 2.1 在linux里配置文件是my.cnf,windows里是my.ini(注:不是my-default.ini).…
1.使用git 升级 服务命令 mvn  deploy -e 之后报错: Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin::test (: Failed to retrieve POM : Could not transfer artifact org.apache.maven.surefire:surefire-junit4:pom: from/to central (https://repo.mave…