[livejournal] r23551: LJSUP-14841: [internal] remove "use inde... https://changelog.livejournal.com/16482491.html
Committer: vad
LJSUP-14841: [internal] remove "use index" hint from query to subs table that was added during temporary db slowness
U trunk/cgi-bin/LJ/Event.pm
Modified: trunk/cgi-bin/LJ/Event.pm
===================================================================
--- trunk/cgi-bin/LJ/Event.pm 2013-01-17 07:46:08 UTC (rev 23550)
+++ trunk/cgi-bin/LJ/Event.pm 2013-01-17 08:54:41 UTC (rev 23551)
@@ -689,14 +689,11 @@
# FIXME: journals are only on one cluster! split jidlist based on cluster
my $jidlist = join(",", @wildcards_from);
- ## Strictly specify USE INDEX(PRIMARY) hint.
- ## Otherwise mysql query planner is acting out and query takes inexcusable amount of time.
my $sth = $udbh->prepare(qq{
SELECT
userid, subid, is_dirty, journalid, etypeid,
arg1, arg2, ntypeid, createtime, expiretime, flags
FROM subs
- USE INDEX(PRIMARY)
WHERE etypeid=? AND journalid=0 $and_enabled
AND userid IN ($jidlist)
});