Logger setup: WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.
還沒有人認領這個 Issue。
評估
研究方向
首先，將 issue 中連結的 Java AWS Lambda 範例 pom.xml 檔案與產生該警告的 custom-runtime 設定和 instrumentation 設定進行比較。重現 NoClassDefFoundError 和效能警告，然後記錄或驗證所需的 logger 設定，並確認在不破壞應用程式的情況下該警告不再出現。
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描述
Hello @maschnetwork
I'm still trying your setup to get some comparisons. I was trying to apply this to one of my apps. Unfortunately I got NoClassDefFoundError: com/amazonaws/services/lambda/runtime/LambdaLogger - apparently it doesn't like my logger setup. It was working properly without the instrumentation, though.
Anyway, I stepped back to the documentation and according to https://docs.aws.amazon.com/lambda/latest/dg/java-logging.html, this is the basic needed setup: https://github.com/awsdocs/aws-lambda-developer-guide/blob/main/sample-apps/java-basic/pom.xml (or here: https://github.com/awsdocs/aws-lambda-developer-guide/blob/main/sample-apps/blank-java/pom.xml) - does it still apply to custom runtimes?
Unfortunately it looks like I still miss some additional setup because with the instrumentation applied and the above setup I get: WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.
The app works fine but from the logs I can see it may impact the performance:
2022-05-09T11:29:15.751+02:00 START RequestId:
2022-05-09T11:29:16.284+02:00 WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance. | WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.
2022-05-09T11:29:19.403+02:00 END RequestId:
2022-05-09T11:29:19.403+02:00 REPORT RequestId: Duration: 3650.94 ms Billed Duration: 4473 ms Memory Size: 512 MB Max Memory Used: 141 MB Init Duration: 821.08 ms XRAY TraceId: XXX Duration: 3650.94 ms Billed Duration: 4473 ms Memory Size: 512 MB Max Memory Used: 141 MB
Have you encountered this error/warning?
Regards
M
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