数据抽取报错可能是什么原因？

在原生SQL数据集中，配置数据抽取，执行失败，日志如下：


删除SmartbiCache表失败：drop table if exists `Iff808081017080b980b96d2e017176c7993c4083`
smartbix.SmartbiXException: 连接错误: drop table if exists `Iff808081017080b980b96d2e017176c7993c4083` -> Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at smartbix.SmartbiXException.create(SmartbiXException.java:48)
at smartbix.smartbi.service.SmartbiConnectionPool.getConnection(SmartbiConnectionPool.java:49)
at smartbix.dao.ConnectionPools.getConnection(ConnectionPools.java:152)
at smartbix.dataprocess.service.DatabaseResultService.executeDmlSql(DatabaseResultService.java:312)
at smartbix.dataprocess.service.DatabaseResultService$$FastClassBySpringCGLIB$$7e915f15.invoke(<generated>)
at smartbixlibs.org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at smartbixlibs.org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at smartbixlibs.org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)

请问这个错误是什么意思？

检查下高速缓存库是否连接成功

linyu 发表于 2020-4-22 11:39
检查下高速缓存库是否连接成功

高速缓存库连接失败，已经解决了，谢谢！