sort queue by rank asc

src/cli/document/crawl.php

@@ -88,6 +88,7 @@ if ($config->cli->document->crawl->debug->level->notice)
 foreach($index->search('')
               ->expression('random', 'rand()')
               ->sort('time', 'asc')
+              ->sort('rank', 'asc')
               ->sort('random', 'asc')
               ->limit($config->cli->document->crawl->queue->limit)
               ->get() as $document)