Re: Make relfile tombstone files conditional on WAL level - Mailing list pgsql-hackers

On Mon, Feb 7, 2022 at 12:26 AM Dilip Kumar <dilipbalaut@gmail.com> wrote:
> I have splitted the patch into multiple patches which can be
> independently committable and easy to review. I have explained the
> purpose and scope of each patch in the respective commit messages.

Hmm. The parts of this I've looked at seem reasonably clean, but I
don't think I like the design choice. You're inventing
RelFileNodeSetFork(), but at present the RelFileNode struct doesn't
include a fork number. I feel like we should leave that alone, and
only change the definition of a BufferTag. What about adding accessors
for all of the BufferTag fields in 0001, and then in 0002 change it to
look like something this:

typedef struct BufferTag
{
    Oid     dbOid;
    Oid     tablespaceOid;
    uint32  fileNode_low;
    uint32  fileNode_hi:24;
    uint32  forkNumber:8;
    BlockNumber blockNumber;
} BufferTag;

-- 
Robert Haas
EDB: http://www.enterprisedb.com