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https://issues.apache.org/jira/browse/SOLR-11453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16499110#comment-16499110
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Shawn Heisey commented on SOLR-11453:
-------------------------------------

I've got too much happening today, or I would have just taken care of it.

> Create separate logger for slow requests
> ----------------------------------------
>
>                 Key: SOLR-11453
>                 URL: https://issues.apache.org/jira/browse/SOLR-11453
>             Project: Solr
>          Issue Type: Improvement
>          Components: logging
>            Reporter: Shawn Heisey
>            Assignee: Varun Thacker
>            Priority: Minor
>             Fix For: 7.4, master (8.0)
>
>         Attachments: SOLR-11453.patch, SOLR-11453.patch, SOLR-11453.patch, 
> SOLR-11453.patch, SOLR-11453.patch, SOLR-11453.patch, 
> slowlog-informational.patch, slowlog-informational.patch, 
> slowlog-informational.patch
>
>
> There is some desire on the mailing list to create a separate logfile for 
> slow queries.  Currently it is not possible to do this cleanly, because the 
> WARN level used by slow query logging within the SolrCore class is also used 
> for other events that SolrCore can log.  Those messages would be out of place 
> in a slow query log.  They should typically stay in main solr logfile.
> I propose creating a custom logger for slow queries, similar to what has been 
> set up for request logging.  In the SolrCore class, which is 
> org.apache.solr.core.SolrCore, there is a special logger at 
> org.apache.solr.core.SolrCore.Request.  This is not a real class, just a 
> logger which makes it possible to handle those log messages differently than 
> the rest of Solr's logging.  I propose setting up another custom logger 
> within SolrCore which could be org.apache.solr.core.SolrCore.SlowRequest.



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