[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:  4.4
Component:  Administration           |     Version:  4.3.1
 Severity:  critical                 |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:  performance
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Comment (by helen):

 In [changeset:"35717"]:
 {{{
 #!CommitTicketReference repository="" revision="35717"
 Custom fields: Allow for short-circuiting the meta key dropdown.

 Adds the `postmeta_form_keys` filter which allows for a potentially
 expensive query against postmeta to be avoided.

 props ericmann, tollmanz, nacin.
 see #33885.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/33885#comment:19>
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