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https://issues.apache.org/jira/browse/SOLR-17192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17845060#comment-17845060
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Jason Gerlowski commented on SOLR-17192:
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I can't say I'm always consistent on this, but I usually go with alphabetical 
order (by first name) - that way I stay out of the business of sizing 
contributions altogether :-p

I'm open to doing things a different way if there's consensus on reading 
additional semantics into CHANGES.txt, but if so, maybe it should be written up 
and documented in 'dev-docs/' or in Confluence first?

(I'm replying from my phone or I'd just modify CHANGES.txt now.  If I forget to 
do it later, feel free to make whatever changes you'd like to the attribution!)

> Maximum-fields-per-core soft limit
> ----------------------------------
>
>                 Key: SOLR-17192
>                 URL: https://issues.apache.org/jira/browse/SOLR-17192
>             Project: Solr
>          Issue Type: Sub-task
>          Components: Schema and Analysis
>    Affects Versions: main (10.0), 9.5.0
>            Reporter: Jason Gerlowski
>            Assignee: Jason Gerlowski
>            Priority: Major
>             Fix For: main (10.0), 9.7
>
>          Time Spent: 5h 50m
>  Remaining Estimate: 0h
>
> Solr isn't infinitely scalable when it comes to the number of fields in each 
> core/collection.  Most deployments start to experience problems any time a 
> core has upwards of a few hundred fields.  Usually this doesn't exhibit 
> itself right away. instead waiting until segment-merge or some other time to 
> rear its head.
> Sometimes users hit this through intentional schema design.  Often however, 
> it happens "accidentally" due to (mis-)use of Solr's "dynamic fields" feature.
> We should add a configurable soft-limit, of the type described in SOLR-17191, 
> to prevent users from unknowingly getting into this state.



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