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https://issues.apache.org/jira/browse/SOLR-9712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15632752#comment-15632752
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Yonik Seeley commented on SOLR-9712:
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If we go this route (which I think we should) then we probably also should:
 - change the default maxWarmingSearchers to 1
 - remove maxWarmingSearchers from our starting configs (it becomes pretty 
advanced... most shouldn't need to worry about it)
 - remove maxWarmingSearchers from the majority of our test configs - we'll 
want the best test coverage on maxWarmingSearchers=1
 - add an upgrade note encouraging removal of maxWarmingSearchers from your 
config, unless you specifically know better
 - document the change in behavior of course...

> Saner default for maxWarmingSearchers
> -------------------------------------
>
>                 Key: SOLR-9712
>                 URL: https://issues.apache.org/jira/browse/SOLR-9712
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: search
>            Reporter: Shalin Shekhar Mangar
>             Fix For: master (7.0), 6.4
>
>         Attachments: SOLR-9712.patch
>
>
> As noted in SOLR-9710, the default for maxWarmingSearchers is 
> Integer.MAX_VALUE which is just crazy. Let's have a saner default. Today we 
> log a performance warning when the number of on deck searchers goes over 1. 
> What if we had the default as 1 that expert users can increase if needed?



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