zhangwei1989 commented on issue #8525: URL: https://github.com/apache/shardingsphere/issues/8525#issuecomment-741719682
Hi @tristaZero , The relative log is shown below: ``` [INFO ] 19:42:07.377 [main] ShardingSphere-metadata - Loading 2 tables' meta data for unconfigured tables. [INFO ] 19:42:07.388 [main] ShardingSphere-metadata - Loading 2 tables' meta data for unconfigured tables. [INFO ] 19:42:07.390 [main] ShardingSphere-metadata - Loading 2 tables' meta data for unconfigured tables. [INFO ] 19:42:07.397 [main] ShardingSphere-metadata - Loading 2 tables' meta data for unconfigured tables. [INFO ] 19:42:07.399 [main] ShardingSphere-metadata - Loading 2 tables' meta data for unconfigured tables. [INFO ] 19:42:07.400 [main] ShardingSphere-metadata - Loading 2 tables' meta data for unconfigured tables. [INFO ] 19:42:07.408 [main] o.a.s.i.c.s.SchemaContextsBuilder - Load meta data for schema replica_query_db finished, cost 97 milliseconds. Thanks for using Atomikos! Evaluate http://www.atomikos.com/Main/ExtremeTransactions for advanced features and professional support or register at http://www.atomikos.com/Main/RegisterYourDownload to disable this message and receive FREE tips & advice [INFO ] 19:42:07.764 [main] o.a.s.p.i.i.AbstractBootstrapInitializer - Database name is `MySQL`, version is `5.7.32-log` [INFO ] 19:42:08.062 [main] o.a.s.p.frontend.ShardingSphereProxy - ShardingSphere-Proxy start success. [INFO ] 19:42:38.337 [ShardingSphere-Command-5] ShardingSphere-SQL - Logic SQL: show tables [INFO ] 19:42:38.337 [ShardingSphere-Command-5] ShardingSphere-SQL - SQLStatement: MySQLShowTablesStatement(fromSchema=Optional.empty) [INFO ] 19:42:38.337 [ShardingSphere-Command-5] ShardingSphere-SQL - Actual SQL: pr_ds ::: show tables [ERROR] 19:42:38.351 [ShardingSphere-Command-5] o.a.s.p.f.c.CommandExecutorTask - Exception occur: java.lang.NullPointerException: Can not get connection from datasource pr_ds. at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:987) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.JDBCBackendDataSource.getConnections(JDBCBackendDataSource.java:80) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.JDBCBackendDataSource.getConnections(JDBCBackendDataSource.java:62) at org.apache.shardingsphere.proxy.backend.communication.jdbc.connection.BackendConnection.getConnectionsWithoutTransaction(BackendConnection.java:141) at org.apache.shardingsphere.proxy.backend.communication.jdbc.connection.BackendConnection.getConnections(BackendConnection.java:102) at org.apache.shardingsphere.infra.executor.sql.resourced.group.ResourceManagedExecuteGroupEngine.generateSQLExecuteGroups(ResourceManagedExecuteGroupEngine.java:66) at org.apache.shardingsphere.infra.executor.sql.group.AbstractExecuteGroupEngine.generate(AbstractExecuteGroupEngine.java:58) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.generateInputGroups(JDBCExecuteEngine.java:140) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.executeWithManagedResource(JDBCExecuteEngine.java:130) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:123) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:103) at org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.doExecute(JDBCDatabaseCommunicationEngine.java:93) at org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.execute(JDBCDatabaseCommunicationEngine.java:79) at org.apache.shardingsphere.proxy.backend.text.admin.ShowTablesBackendHandler.execute(ShowTablesBackendHandler.java:65) at org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:62) at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:100) at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:76) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) [INFO ] 19:42:43.098 [ShardingSphere-Command-6] ShardingSphere-SQL - Logic SQL: show tables [INFO ] 19:42:43.099 [ShardingSphere-Command-6] ShardingSphere-SQL - SQLStatement: MySQLShowTablesStatement(fromSchema=Optional.empty) [INFO ] 19:42:43.099 [ShardingSphere-Command-6] ShardingSphere-SQL - Actual SQL: pr_ds ::: show tables [ERROR] 19:42:43.100 [ShardingSphere-Command-6] o.a.s.p.f.c.CommandExecutorTask - Exception occur: java.lang.NullPointerException: Can not get connection from datasource pr_ds. at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:987) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.JDBCBackendDataSource.getConnections(JDBCBackendDataSource.java:80) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.JDBCBackendDataSource.getConnections(JDBCBackendDataSource.java:62) at org.apache.shardingsphere.proxy.backend.communication.jdbc.connection.BackendConnection.getConnectionsWithoutTransaction(BackendConnection.java:141) at org.apache.shardingsphere.proxy.backend.communication.jdbc.connection.BackendConnection.getConnections(BackendConnection.java:102) at org.apache.shardingsphere.infra.executor.sql.resourced.group.ResourceManagedExecuteGroupEngine.generateSQLExecuteGroups(ResourceManagedExecuteGroupEngine.java:66) at org.apache.shardingsphere.infra.executor.sql.group.AbstractExecuteGroupEngine.generate(AbstractExecuteGroupEngine.java:58) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.generateInputGroups(JDBCExecuteEngine.java:140) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.executeWithManagedResource(JDBCExecuteEngine.java:130) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:123) at org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:103) at org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.doExecute(JDBCDatabaseCommunicationEngine.java:93) at org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.execute(JDBCDatabaseCommunicationEngine.java:79) at org.apache.shardingsphere.proxy.backend.text.admin.ShowTablesBackendHandler.execute(ShowTablesBackendHandler.java:65) at org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:62) at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:100) at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:76) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ``` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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