pg数据库 An I/O error occurred while sending to the backend

[tomcatnull]

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.2.23</version>
</dependency>

数据库pg9
jdk8
springboot 2.7.7

select count(1) from table 单表数据量超过800万就会报 An I/O error occurred while sending to the backend ，sql直接执行很快，jdbc直连执行也很快，用了druid就会出现这个问题