On 2020/11/27 1:51, Fujii Masao wrote:
>
>
> On 2020/11/27 1:45, Matthias van de Meent wrote:
>> On Thu, 26 Nov 2020 at 00:55, Fujii Masao <masao.fujii@oss.nttdata.com> wrote:
>>>
>>> + * A heap scan need not return tuples for the last page it has
>>> + * scanned. To ensure that heap_blks_scanned is equivalent to
>>> + * total_heap_blks after the table scan phase, this parameter
>>> + * is manually updated to the correct value when the table scan
>>> + * finishes.
>>>
>>> So it's better to update this comment a bit? For example,
>>>
>>> If the scanned last pages are empty, it's possible to go to the next phase
>>> while heap_blks_scanned != heap_blks_total. To ensure that they are
>>> equivalet after the table scan phase, this parameter is manually updated
>>> to the correct value when the table scan finishes.
>>>
>>
>> PFA a patch with updated message and comment. I've reworded the
>> messages to specifically mention empty pages and the need for setting
>> heap_blks_scanned = total_heap_blks explicitly.
>
> Thanks for updating the patch! It looks good to me.
> Barring any objection, I will commit this patch (also back-patch to v12).
Pushed. Thanks!
Regards,
--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION
