BuildNestInner	crates/gravity/lowerv4/src/ops/hashjoin/build.rs	make	lifetime	-	a build only a nest inner probes (the nest's own set) keeps no partition bits	hash join	A hash join that is itself the inner side of a nested loop or of a correlated subquery 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.
