使用 gcp 云 sql 代理时如何启用 rewriteBatchStatements？

Question

We have a microservice deployed on GKE that connects to mysql db instance on GCP through cloud sql proxy. We are using spring jdbctemplate.batchUpdate to execute batch insert/update statements. When I append rewriteBatchStatements=true to jdbc url as jdbc:mysql://localhost:3306/db?rewriteBatchStatements=true, it is not able to connect to db instance.

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at Z4D236D9A2D102C5FE6AD1C50DA 4BEC50Z.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:144) at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956) at com.mysql.cj.jdbc.ConnectionImpl.creat eNewIO(ConnectionImpl.java:826)... 40 common frames omitted Caused by: java.net.ConnectException: Connection refused (Connection refused) at java.base/java.net.PlainSocketImpl.socketConnect(Native Method) at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399) at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242) at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)

How can I enable rewriteBatchStatements?

Answer 1

This exception was due to missing service entry for cloud proxy in GKE. jdbc:mysql://localhost:3306/db?rewriteBatchStatements=true works fine