This is basically the same thing we fixed for ApiQueryLogEvents in
I16dba2158.
Bug: T223151
Change-Id: I53a7ed59de3eed2b0b4f1b1fb7f6d302b1de276c
if ( !$this->mTagFilter && !array_key_exists( 'ls_field', $this->mConds ) ) {
$options[] = 'STRAIGHT_JOIN';
}
+ if ( $this->performer !== '' ) {
+ // T223151: MariaDB's optimizer, at least 10.1, likes to choose a wildly bad plan for
+ // some reason for this code path. Tell it not to use the wrong index it wants to pick.
+ $options['IGNORE INDEX'] = [ 'logging' => [ 'times' ] ];
+ }
$info = [
'tables' => $tables,