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https://issues.apache.org/jira/browse/KNOX-1462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758477#comment-16758477
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Kevin Risden commented on KNOX-1462:
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Most of the tests are passing in the branch/PR listed above. Would need to look
at what this means on an upgrade for log4j configs.
> Migrate from Log4j 1.x to 2.x
> -----------------------------
>
> Key: KNOX-1462
> URL: https://issues.apache.org/jira/browse/KNOX-1462
> Project: Apache Knox
> Issue Type: Improvement
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Priority: Blocker
> Fix For: 2.0.0
>
>
> Assigning to version 1.2.0 to have a discussion about it.
> Log4j 1.x went EOL in August 2015. JDK 9+ support (KNOX-1458) will require
> Log4j 2 since Knox uses MDC for all the audit logging. More details about the
> issue and migration are found here:
> * [https://blogs.apache.org/logging/entry/moving_on_to_log4j_2]
> * [https://logging.apache.org/log4j/2.x/manual/migration.html]
> Items of "concern"
> * MDC migrate to ThreadContext
> * log4j.properties need to migrate to log4j2.xml (or yaml or json)
> Benefits
> * Async logging
> * Dynamic reloading of configuration changes
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