Ladsgroup added a comment.
update.php on beta cluster took 17 seconds which basically locks the whole
beta cluster during the time:
- It purges object cache. Maybe we can reduce that.
- it tries to remove default value of lots of fields in each run because the
check for default value is against the result being false which it never is
(it's empty string if the default value is null, empty string or even zero):
ladsgroup@deployment-deploy01:~$ mwscript eval.php --wiki=enwiki
> $db = wfGetDB( DB_PRIMARY );
> var_dump( $db->fieldInfo( 'revision', 'rev_sha1')->defaultValue() );
string(0) ""
> var_dump( $db->fieldInfo( 'revision', 'rev_parent_id')->defaultValue() );
string(0) ""
> var_dump( $db->fieldInfo( 'revision', 'rev_deleted')->defaultValue() );
string(0) ""
I'm going to check other bits too
TASK DETAIL
https://phabricator.wikimedia.org/T277862
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