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https://issues.apache.org/jira/browse/SOLR-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636746#comment-13636746
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Shawn Heisey commented on SOLR-4053:
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[~romseygeek] has filed SOLR-4735 to update the metrics reporting.  I am 
wondering whether this issue makes sense.  I use the percentile information for 
QTime often, and having a historical view of warming times without setting up a 
complete separate monitoring solution would be VERY useful.

                
> metrics - add statistics on searcher/cache warming
> --------------------------------------------------
>
>                 Key: SOLR-4053
>                 URL: https://issues.apache.org/jira/browse/SOLR-4053
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 5.0
>            Reporter: Shawn Heisey
>            Priority: Minor
>             Fix For: 4.3
>
>
> One stat that I rely on is the amount of time that it takes to warm caches 
> and an entire searcher, but unless you turn on INFO logging and write 
> something to parse the logs, you can only see how long the last commit took 
> to warm.  I propose that we use the new metrics capability added in SOLR-1972 
> to give us visibility into historical cache/searcher warming times.
> If I find some time in the near future, I will take a stab at creating a 
> patch, but if someone else has an idea and time, don't wait around for me.

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