https://bugzilla.wikimedia.org/show_bug.cgi?id=41656
Ariel T. Glenn <ar...@wikimedia.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ar...@wikimedia.org
--- Comment #12 from Ariel T. Glenn <ar...@wikimedia.org> 2012-11-15 08:16:13
UTC ---
on a chosen random jobrunner, running
root@mw16:/usr/local/apache/common-local/multiversion# php MWScript.php
nextJobDB.php --wiki=aawiki
gives the empty string, although eg enwiki has 18313 refreshLinks2 in the
table, some from Nov 5.
running
echo 'print_r ( $wgMemc->get( "jobqueue:dbs:v3" ) );' | php MWScript.php
eval.php --wiki=aawiki
gives output
Array
(
[refreshLinks2] => Array
(
[0] => afwiki
[1] => alswiki
[2] => anwiki
[3] => arwiki
...
[createPdfThumbnailsJob] => Array
(
[0] => sqwiki
)
)
There's no 'pendingDBs' key in there anywhere.
Here's the relevant code in nextJobDB.php:
$pendingDbInfo = $wgMemc->get( $memcKey );
if ( !$pendingDbInfo || mt_rand( 0, 100 ) == 0 ) {
... (regenerate 1/100 of the time)
}
if ( !$pendingDbInfo || !$pendingDbInfo['pendingDBs'] ) {
return; // no DBs with jobs or cache is both empty and locked
}
$pendingDBs = $pendingDbInfo['pendingDBs'];
So that's going to return empty-handed every time.
Those refs to 'pendingDBs' are the Nov 2 change
I guess that we get some jobs run 1/100 of the time when we regenerate the
memcache entry.
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