Re: heapam_tuple_complete_speculative : remove unnecessary tuple fetch - Mailing list pgsql-hackers

From Japin Li
Subject Re: heapam_tuple_complete_speculative : remove unnecessary tuple fetch
Date
Msg-id SY7PR01MB1092127415D38E676B1B0BAA0B648A@SY7PR01MB10921.ausprd01.prod.outlook.com
Whole thread Raw
In response to heapam_tuple_complete_speculative : remove unnecessary tuple fetch  (Chao Li <li.evan.chao@gmail.com>)
Responses Re: heapam_tuple_complete_speculative : remove unnecessary tuple fetch
List pgsql-hackers
> 在 2026年3月24日,14:57,Chao Li <li.evan.chao@gmail.com> 写道:
> 
> Hi,
> 
> While reviewing another patch, I noticed this:
> ```
> static void
> heapam_tuple_complete_speculative(Relation relation, TupleTableSlot *slot,
>                                  uint32 specToken, bool succeeded)
> {
>    bool        shouldFree = true;
>    HeapTuple    tuple = ExecFetchSlotHeapTuple(slot, true, &shouldFree); // <== tuple is not used
> 
>    /* adjust the tuple's state accordingly */
>    if (succeeded)
>        heap_finish_speculative(relation, &slot->tts_tid);
>    else
>        heap_abort_speculative(relation, &slot->tts_tid);
> 
>    if (shouldFree)
>        pfree(tuple);
> }
> ```
> 
> In this function, tuple is not used at all, so there seems to be no need to fetch it, and shouldFree is thus not
neededeither.
 
> 
> This appears to have been there since 5db6df0c011, where the function was introduced. It looks like a copy-pasto from
theprevious function, heapam_tuple_insert_speculative(), which does need to fetch and possibly free the tuple.
 
> 
> I tried simply removing ExecFetchSlotHeapTuple(), and "make check" still passes. But I may be missing something, so
I’dlike to confirm.
 
> 
> The attached patch just removes the unused tuple and shouldFree from this function. As touching the file, I also
fixeda typo in the file header comment.
 

Makes sense! All test cases passed with make check-world.


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