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https://issues.apache.org/jira/browse/CASSANDRA-15606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073247#comment-17073247
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David Capwell commented on CASSANDRA-15606:
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kinda yeah.
> Support Logback and log4j2
> --------------------------
>
> Key: CASSANDRA-15606
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15606
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability/Logging
> Reporter: David Capwell
> Priority: Normal
>
> Right now we only support Logback, CCM expects this as well; it is desirable
> to also support log4j2.
> Right now, if someone wishes to use log4j2 they have to do the following
> 1) Compile with Logback
> 2) delete logback jars
> 3) add log4j2 jars
> 4) disable logging in CCM
> This should be simpler and should just be based off the operator (if Logback
> is better for you, use it, if log4j2 is then use it).
> The main point where we depend on Logback is
> org.apache.cassandra.utils.logging.LogbackLoggingSupport and this is only
> enabled if org.apache.cassandra.utils.logging.LoggingSupportFactory sees
> “logback” in the class name; else everything is disabled (which is why the
> above steps work). This logic adds some nice integration so this should not
> be lost and should also be supported in log4j2.
> Lastly, given the implementation of how slf4j picks the binding
> (ServiceLoader which is classpath order), we should make sure its clear how
> to properly switch between the two; ideally, if the operator some how selects
> both, the behavior should be deterministic (slf4j is not))
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