[wp-trac] [WordPress Trac] #33885: meta_form performs a potentially expensive query

[WordPress Trac]

#33885: meta_form performs a potentially expensive query
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 Reporter:  jorbin                   |       Owner:
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  Future Release
Component:  Administration           |     Version:  4.3.1
 Severity:  critical                 |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:  performance
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Comment (by robscott):

 Agree - though it may be as easy to make this an option, which defaults to
 "off", rather than using a filter. Its calling the expensive query when it
 wasn't (necessarily) needed that's the problem imo.

 Is it not an option to update the database to a shorter `meta_key`
 (`varchar(191)`) after confirming the non existence of keys longer than
 that. I don't see how that could destroy any data, ever?

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Ticket URL: <https://core.trac.wordpress.org/ticket/33885#comment:46>
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