[wp-trac] [WordPress Trac] #55593: Prime caches for post parents in post rest api controller

[WordPress Trac]

#55593: Prime caches for post parents in post rest api controller
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 Reporter:  spacedmonkey              |       Owner:  spacedmonkey
     Type:  enhancement               |      Status:  reopened
 Priority:  normal                    |   Milestone:  6.1
Component:  REST API                  |     Version:  4.7
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:  rest-api, performance
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Comment (by SergeyBiryukov):

 Replying to [comment:16 SergeyBiryukov]:
 > It looks like there might be some kind of a race condition in the test
 added in [53506]:
 > {{{
 > 1) WP_Test_REST_Posts_Controller::test_get_items_parent_ids_primed
 > Failed asserting that two arrays are equal.
 > --- Expected
 > +++ Actual
 > @@ @@
 >  Array (
 > -    0 => 1880
 > -    1 => 1881
 > +    0 => 2003
 >  )
 >
 > /var/www/tests/phpunit/includes/abstract-testcase.php:820
 > /var/www/tests/phpunit/tests/rest-api/rest-posts-controller.php:1828
 > phpvfscomposer:///var/www/vendor/phpunit/phpunit/phpunit:97
 > }}}
 >
 > See these PHP 7.4 jobs for example:
 > https://github.com/WordPress/wordpress-
 develop/runs/6898050638?check_suite_focus=true#step:20:267
 > https://github.com/WordPress/wordpress-
 develop/runs/6900501418?check_suite_focus=true#step:20:267

 Looks like it's PHP 7.4 with memcached specifically that fails, not the
 regular PHP 7.4 job.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55593#comment:19>
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