Arjayay reports in https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_%28technical%29&oldid=546880111#Search_index_not_updating
that the en.wikipedia.org search index does not update.
Tim (CC'ed) fixed this on March 19 already but looks like it didn't work for long.
On a related note, the Server Admin Log has an entry for March 22: "02:52 Tim: on searchidx1001: started incremental indexer, apparently it died on March 21 at 02:08 when it ran at the same time as a cron job import"
Tim: Could you check if it's the same issue again?