Is it just me, or does the auto-download of maven on a fresh Spark clone no longer work? It looks like https://www.apache.org/dyn/closer.lua?action=download&filename= is not functioning anymore (or for the moment) for any piece of Apache software.
I noted this in https://issues.apache.org/jira/browse/SPARK-35178. I tried on two unrelated networks, so I don't think I am being rate limited. When I changed the mirror in build/mvn to the direct download page (https:// https://downloads.apache.org), the build worked. I assume there is a good reason build/mvn doesn't use that url (I suppose the current url chooses a mirror, maybe?).