我在連接到 Vitess 的 MySQL 集群時遇到了這個問題。以下是我正在使用的配置和版本。
- Vitess - 12.0.0
- MySQL - 8.0.27
- mysql-connector-java - 8.0.27
- Springboot - 2.6.1
- spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
請幫忙！
2021-12-05 18:01:52.833 INFO 16196 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2021-12-05 18:01:52.876 INFO 16196 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 35 ms. Found 1 JPA repository interfaces.
2021-12-05 18:01:53.445 INFO 16196 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-12-05 18:01:53.453 INFO 16196 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-12-05 18:01:53.454 INFO 16196 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.55]
2021-12-05 18:01:53.504 INFO 16196 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-12-05 18:01:53.504 INFO 16196 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1261 ms
2021-12-05 18:01:53.936 INFO 16196 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2021-12-05 18:01:53.975 INFO 16196 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.6.1.Final
2021-12-05 18:01:54.062 INFO 16196 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2021-12-05 18:01:54.330 WARN 16196 --- [ main] o.h.e.j.e.i.JdbcEnvironmentInitiator : HHH000342: Could not obtain connection to query metadata
java.sql.SQLException: target: commerce.0.primary: vttablet: rpc error: code = InvalidArgument desc = Unknown system variable 'query_cache_size' (errno 1193) (sqlstate HY000) (CallerID: userData1): Sql: "/* mysql-connector-java-8.0.27 (Revision: e920b979015ae7117d60d72bcc8f077a839cd791) */select @@session.auto_increment_increment as auto_increment_increment, @@character_set_client as character_set_client, @@character_set_connection as character_set_connection, @@character_set_results as character_set_results, @@character_set_server as character_set_server, @@collation_server as collation_server, @@collation_connection as collation_connection, @@init_connect as init_connect, @@interactive_timeout as interactive_timeout, @@license as license, @@lower_case_table_names as lower_case_table_names, @@max_allowed_packet as max_allowed_packet, @@net_write_timeout as net_write_timeout, @@performance_schema as performance_schema, @@query_cache_size as query_cache_size, @@query_cache_type as query_cache_type, @@sql_mode as sql_mode, @@system_time_zone as system_time_zone, @@time_zone as time_zone, @@tx_isolation as transaction_isolation, @@wait_timeout as wait_timeout from dual", BindVars: {}
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.27.jar:8.0.27]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.27.jar:8.0.27]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828) ~[mysql-connector-java-8.0.27.jar:8.0.27]
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:448) ~[mysql-connector-java-8.0.27.jar:8.0.27]
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241) ~[mysql-connector-java-8.0.27.jar:8.0.27]
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198) ~[mysql-connector-java-8.0.27.jar:8.0.27]
at org.springframework.jdbc.datasource.SimpleDriverDataSource.getConnectionFromDriver(SimpleDriverDataSource.java:144) ~[spring-jdbc-5.3.13.jar:5.3.13]
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:205) ~[spring-jdbc-5.3.13.jar:5.3.13]
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:169) ~[spring-jdbc-5.3.13.jar:5.3.13]
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.6.1.Final.jar:5.6.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181) ~[hibernate-core-5.6.1.Final.jar:5.6.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) [hibernate-core-5.6.1.Final.jar:5.6.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) [hibernate-core-5.6.1.Final.jar:5.6.1.Final]
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) [hibernate-core-5.6.1.Final.jar:5.6.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) [hibernate-core-5.6.1.Final.jar:5.6.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) [hibernate-core-5.6.1.Final.jar:5.6.1.Final]
uj5u.com熱心網友回復：
問題是 MySQL 8.0 洗掉了查詢快取和相關變數，但 Vitess vtgate 仍然向客戶端通告它是 MySQL 5.5 服務器。MySQL JDBC 連接器錯誤地認為它可以發送對已棄用變數的查詢。
https://github.com/vitessio/vitess/issues/5205
解決方法：用于
vtgate -mysql_server_version通告 mysql 8.x 版本字串（例如“8.0.17 Source distribution”）
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