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From "Varun Thacker (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-11453) Create separate logger for slow requests
Date Sat, 05 May 2018 18:52:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16464860#comment-16464860
] 

Varun Thacker commented on SOLR-11453:
--------------------------------------

Quick patch , where we create a new solr_slow_requests.log file which logs slow requests
. This is in addition to logging in the solr.log file ( we don't want to change this behaviour
atleast in the 7.x code base ) 

 

> 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
>    Affects Versions: 7.0.1
>            Reporter: Shawn Heisey
>            Assignee: Shawn Heisey
>            Priority: Minor
>         Attachments: SOLR-11453.patch, SOLR-11453.patch, SOLR-11453.patch, SOLR-11453.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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