I am using the Search API module with Search API Solr. When I visit my index page at http://example.com/admin/config/search/search-api/index/my-example-index, I see the "Index Now" button is disabled and inactive. I see "Content (7796/7796 indexed)" for the data source. However, recent content items are not showing up in my search results.
At admin/config/search/pages, I see "6% of the site has been indexed. There are 7693 items left to index." Ok, how do I index the rest?
I know that not all content is indexed, because recent content is not showing up in search results. I don't want to index just 50 or 100 content items at this time. I want to index everything, so all content can show up in search results.