nisiyong opened a new issue #5821: URL: https://github.com/apache/skywalking/issues/5821
Please answer these questions before submitting your issue. - Why do you submit this issue? - [x] Question or discussion - [ ] Bug - [ ] Requirement - [ ] Feature or performance improvement ___ ### Question - What do you want to know? I just upgraded the `OAP Backend` from `8.1.0` to `8.2.0`, and the `Java Agent` version is still `8.1.0`. After restart the `OAP Backend`, I found some logs I haven't seen before, the logs as follow: ```bash 2020-11-10 15:54:49,178 - org.apache.skywalking.oap.meter.analyzer.dsl.Result -576571 [pool-8-thread-1] INFO [] - Expression fails: Parsed result is an EMPTY sample family 2020-11-10 15:54:49,179 - org.apache.skywalking.oap.meter.analyzer.dsl.Result -576572 [pool-8-thread-1] INFO [] - Expression fails: Parsed result is an EMPTY sample family 2020-11-10 15:54:49,180 - org.apache.skywalking.oap.meter.analyzer.dsl.Result -576573 [pool-8-thread-1] INFO [] - Expression fails: Parsed result is an EMPTY sample family 2020-11-10 15:54:49,180 - org.apache.skywalking.oap.meter.analyzer.dsl.Result -576573 [pool-8-thread-1] INFO [] - Expression fails: Parsed result is an EMPTY sample family 2020-11-10 15:54:49,184 - org.apache.skywalking.oap.meter.analyzer.dsl.Result -576577 [pool-8-thread-1] INFO [] - Expression fails: Parsed result is an EMPTY sample family ``` I learned the new feature, Meter Analysis Language added since `8.2.0`. But I wonder why these logs here, is there something wrong? Hope somebody could help me, thanks! ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected]
