SpooledDrain	crates/gravity/lowerv4/src/ops/hashjoin/spill/build.rs	alone	lifetime	-	a probe pipeline ending in a spooled drain keeps its build resident	hash join	A RIGHT or FULL hash join whose result is spooled (under a materialized CTE, an uncorrelated subquery, a hashed subquery or a Materialize) 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.
