docs: extend comment about (not) cleanup up delete predicates
@@ -147,7 +147,8 @@ impl CatalogState for TracerCatalogState {
_predicate: Arc<Predicate>,
_chunks: Vec<ChunkAddrWithoutDatabase>,
) -> Result<(), CatalogStateDeletePredicateError> {
- // No need to track delete predicates.
+ // No need to track delete predicates, because the cleanup's job is to remove unreferenced parquet files. Delete
+ // predicates however are stored directly within the preserved catalog and therefore don't need pruning.
Ok(())
}
}
