1. Did you configure some BI tool or monitoring with Kylin, which send the "select 1" query every second? Kylin itself won't do that .
2. If you deleted the test0718 project, any request to that project will get the "Cannot find project" error. This might be the same issue as the first issue. Best regards, Shaofeng Shi 史少锋 Apache Kylin PMC, Apache Incubator PMC, Email: shaofeng...@apache.org Apache Kylin FAQ: https://kylin.apache.org/docs/gettingstarted/faq.html Join Kylin user mail group: user-subscr...@kylin.apache.org Join Kylin dev mail group: dev-subscr...@kylin.apache.org 杨冠军 <15563907...@163.com> 于2023年7月21日周五 14:12写道: > Hello > > Recently, I encountered the following two issues in using Kylin 4.0.3, > which are difficult to solve and require your Q&A: > > 1. A test topic test0718 was created in Kylin, and data was constructed on > this topic and queried. A log of - [QUERY] - will be printed every second > in Kylin.log, with SQL in query being select 1; Execute once per second; > > 2. After deleting the test topic test0718 in kylin, an error is reported > every ten minutes in kylin.log. The error is: controller. BasicController: > 98: > > Org. apache. kylin. test. exception. BadRequestException: Cannot find > project 'test0718'; > > May I ask how the above two situations were triggered? Thank you~ >