Hi,
> * The previous coding allowed for a fast path to access the last
> unowned relation, which this patch removes. It seems a good idea to
> cache the last unowned relation, or if not explain why the comment
> that says why it worked that way is no longer true.
>
> * We should only create the
Hi,
The attached patch changes data structure storing unowned SMgrRelation objects
from list structure to hash structure.
The reason why I change it is that list structure very slowly removes a node.
And list structure takes longer time to remove a node than hash structure.
The problem was
