fn recycle_capped<C: Columnar>(chunk: Column<C>, stash: &mut Vec<Column<C>>)Expand description
Recycle chunk only if the stash isn’t already at STASH_CAP and the
chunk isn’t oversize per MAX_RECYCLE_BYTES. length_in_bytes is
measured before clear, so it reflects the data the chunk was carrying
(a proxy for the capacity we’d park).