Google has accepted 2 indexing outages. The 1st affects mobile indexing, while the other involves canonicalization which affected how duplicate content was being handled & shown in the search results.
Google Confirms Two Indexing Outages – Search Engine Journal
Google’s Danny Sullivan announced via Twitter that Google Search has been impacted by two kinds of outages. The first outage affects mobile indexing. The second outage involves canonicalization which affected how duplicate content was being handled and shown in the search results, including…
Link: Google Confirms Two Indexing Outages
via www.searchenginejournal.com