[SOLR-16878] Include Lucene JUL logs with Solr logging

• Type: Improvement
• Status: Closed
• Priority: Blocker
• Resolution: Done
• Affects Version/s: 9.0
• Fix Version/s: 9.3
• Component/s: logging
• Assignee: Houston Putman
• Reporter: Houston Putman
• Created: 07/Jul/23 15:07
• Updated: 13/Sep/23 17:05
• Resolved: 10/Jul/23 17:49

Description

Starting with Lucene 9.1.0, Lucene now logs certain warnings and errors using Java Util Logging (JUL). Upgrade notes: https://lucene.apache.org/core/9_1_0/MIGRATE.html

For Solr's Log4J setup to include these logs, we must follow Log4J's JUL instructions and set -Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager when starting Solr. We will also need to include the log4j-jul jar in lib-ext with the other logging jars.

Issue Links

• causes: SOLR-16976 ClassNotFoundException: org.apache.logging.log4j.jul.LogManager with JMX enabled
• links to: GitHub Pull Request #1765