Re: What to name the current heap after pluggable storage / what to rename?

On Tue, Mar 12, 2019 at 8:39 PM Andres Freund <andres@anarazel.de> wrote:
> > I like that option.
>
> In that vein, does anybody have an opinion about the naming of
> a) HeapUpdateFailureData, which will be used for different AMs
> b) HTSU_Result itself, which'll be the return parameter for
>    update/delete via tableam
> c) Naming of HTSU_Result members (like HeapTupleBeingUpdated)
>
> I can see us doing several things:
> 1) Live with the old names, explain the naming as historical baggage
> 2) Replace names, but add typedefs / #defines for backward compatibility
> 3) Rename without backward compatibility

I think I have a mild preference for renaming HeapUpdateFailureData to
TableUpdateFailureData, but I'm less excited about renaming
HTSU_Result or its members.  I don't care if you want to do
s/HeapTuple/TableTuple/g and s/HTSU_Result/TTSU_Result/g though.

> If we were to go with 2) or 3), does anybody want to make a case for
> renaming the HTSU_Result members? They've been confusing people for a
> long while...
>
> In the patch it's currently:
>
> typedef enum
> {
>         HeapTupleMayBeUpdated,          /* or deleted */
>         HeapTupleInvisible,
>         HeapTupleSelfUpdated,           /* or deleted */
>         HeapTupleUpdated,
>         HeapTupleDeleted,
>         HeapTupleBeingUpdated,          /* or deleted */
>         HeapTupleWouldBlock                     /* can be returned by heap_tuple_lock */
> } HTSU_Result;

I think you're getting at the idea that HeapTupleMayBeUpdated really
means NoProblemsFound, but I would be inclined to leave that alone.
It's confusing, but the people who need to know what it means probably
have the current name figured out, and would have to learn what some
new name means.

-- 
Robert Haas
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