I've been trying to get some user information from the revisions tables. I have tried different queries, but I'm always getting Null values both for rev_user and rev_user_text
For example, this query:
hive (wmf_raw)> SELECT DISTINCT rev_user FROM mediawiki_revision WHERE snapshot = '2020-02' AND wiki_db = 'enwiki';
Is this a bug or Am I doing something wrong?