Shawn Heisey created SOLR-7887:
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Summary: Upgrade Solr to use log4j2 -- log4j 1 now officially end
of life
Key: SOLR-7887
URL: https://issues.apache.org/jira/browse/SOLR-7887
Project: Solr
Issue Type: Task
Affects Versions: 5.2.1
Reporter: Shawn Heisey
The logging services project has officially announced the EOL of log4j 1:
https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces
In the official binary jetty deployment, we use use log4j 1.2 as our final
logging destination, so the admin UI has a log watcher that actually uses log4j
and java.util.logging classes. That will need to be extended to add log4j2. I
think that might be the largest pain point to this upgrade.
There is some crossover between log4j2 and slf4j. Figuring out exactly which
jars need to be in the lib/ext directory will take some research.
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