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https://issues.apache.org/jira/browse/SOLR-10415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16070195#comment-16070195
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Michael Braun commented on SOLR-10415:
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Breaking this up into sub-tickets with patches to make this easier - see
[SOLR-10985]
> Within solr-core, debug/trace level logging should use parameterized log
> messages
> ---------------------------------------------------------------------------------
>
> Key: SOLR-10415
> URL: https://issues.apache.org/jira/browse/SOLR-10415
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Michael Braun
> Priority: Trivial
>
> Noticed in several samplings of an active Solr that several debug statements
> were taking decently measurable time because of the time of the .toString
> even when the log.debug() statement would not output because it was
> effectively INFO or higher. Using parameterized logging statements, ie
> 'log.debug("Blah {}", o)' will avoid incurring that cost.
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