The following query against dewiki.revision from stat1004 or stat1007:
SELECT rev_user, rev_timestamp FROM dewiki.revision WHERE (rev_timestamp >= 20191101000000);
sent through /usr/local/bin/analytics-mysql dewiki -e \"SELECT rev_user, rev_timestamp FROM dewiki.revision WHERE (rev_timestamp >= 20191101000000);\" > /pathToSomeOutfile
returns 618330 rows of which all rev_user fields have a value of 0; from the documentation we see that 0 implies:
Key to user.user_id of the user who made this edit. Stores 0 for anonymous edits and for some mass imports. rev_user int unsigned NOT NULL default 0
Is it possible that dewiki did not receive any registered users' edits and/or has received mass imports only since the beginning of November 2019?