WordPress.org

Make WordPress Core

Opened 5 years ago

Last modified 2 months ago

#14254 reopened defect (bug)

update_meta_cache fails; query too large? — at Version 1

Reported by: newpixel Owned by:
Milestone: Future Release Priority: normal
Severity: normal Version: 2.9.2
Component: Cache API Keywords: has-patch 2nd-opinion needs-codex
Focuses: Cc:

Description (last modified by nacin)

In the file meta.php, around line 183 in the 'update_meta_cache()' function, it tries to do a query but I noticed this can fail (ie. crash wordpress) if there are too many post id's in the query.

The function is being called from query_posts(), with 'posts_per_page' set to -1.

An example query that crashed it:

SELECT post_id, meta_key, meta_value FROM wp_postmeta WHERE post_id IN (1009,1006,989,933,902,860,859,858,857,793,838,837,836,827,825,310,780,777,776,775,774,773,770,763,760,759,758,757,728,756,755,754,753,752,751,750,748,746,
732,736,729,726,725,724,723,722,720,719,717,716,715,710,709,503,692,289,625,268,593,583,582,332,32,30,28,26,24,22)

Maybe there is some limit associated with queries of this type internal to wordpress, as this query works fine in phpMySql.

Apologies if this is already reported or irrelevant in 3.0!

Change History (1)

comment:1 @nacin5 years ago

  • Description modified (diff)
  • Keywords reporter-feedback added; update meta cache query posts removed

Can you explain what "crash WordPress" means? That query should have no issue.

Note: See TracTickets for help on using tickets.