EndArmsFaceOff	crates/gravity/lowerv4/src/ops/hashjoin/spill/build.rs	pair_end	lifetime	-	an end whose parallel Arms face is off keeps the build resident	hash join	Only with the developer setting pgrust.gravity_road_off naming append.arms, a hash join whose rows go into a sort, an aggregate or another hash table keeps its whole hash table in memory where PostgreSQL would spill it to disk, so the statement fails with an out-of-memory error when the server has no more memory to give it.
