WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance

Bug reports
1

Hi
Just after starting the Metabase server with the jar, I found this message as below:
WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.

I didn’t get this message when I was using Metabase version 0.36.X

{
  "browser-info": {
    "language": "fr",
    "platform": "Win32",
    "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0",
    "vendor": ""
  },
  "system-info": {
    "file.encoding": "UTF-8",
    "java.runtime.name": "OpenJDK Runtime Environment",
    "java.runtime.version": "11.0.8+10-LTS",
    "java.vendor": "N/A",
    "java.vendor.url": "https://openjdk.java.net/",
    "java.version": "11.0.8",
    "java.vm.name": "OpenJDK 64-Bit Server VM",
    "java.vm.version": "11.0.8+10-LTS",
    "os.name": "Linux",
    "os.version": "3.10.0-1127.10.1.el7.x86_64",
    "user.language": "en",
    "user.timezone": "Europe/Paris"
  },
  "metabase-info": {
    "databases": [
      "postgres",
      "h2",
      "csv"
    ],
    "hosting-env": "unknown",
    "application-database": "postgres",
    "application-database-details": {
      "database": {
        "name": "PostgreSQL",
        "version": "10.14"
      },
      "jdbc-driver": {
        "name": "PostgreSQL JDBC Driver",
        "version": "42.2.8"
      }
    },
    "run-mode": "prod",
    "version": {
      "date": "2020-10-26",
      "tag": "v0.37.0.2",
      "branch": "release-x.37.x",
      "hash": "ba7be09"
    },
    "settings": {
      "report-timezone": "Europe/Brussels"
    }
  }
}
2

Hi @glegrand
This is caused by an upgrade of log4j and can be ignored:
https://github.com/metabase/metabase/issues/13625 - upvote by clicking :+1: on the first post