zhixingheyi-tian opened a new issue, #8702: URL: https://github.com/apache/incubator-gluten/issues/8702
### Backend VL (Velox) ### Bug description Sometimes, we will try to figure out the key contribution of the engine. The plan metrics is a good way to evaluate performance。 But we found that Scan metrics are inaccurate, leading to a series of misjudgments。 Q96 is one example.  Here: "number of output rows: 709, 525". This value is equal to the output of the third join, which is incredible. <img width="398" alt="Image" src="https://github.com/user-attachments/assets/59f378d3-4888-4161-98c2-09742f588238"; /> cc @zhouyuan @weiting-chen , Thanks. ### Spark version None ### Spark configurations _No response_ ### System information _No response_ ### Relevant logs ```bash ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
