| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Marko Tiikkaja <marko(at)joh(dot)to>, Andres Freund <andres(at)anarazel(dot)de>, Andrew Fletcher <andy(at)prestigedigital(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #15324: Non-deterministic behaviour from parallelised sub-query |
| Date: | 2018-08-20 10:52:25 |
| Message-ID: | CAA4eK1JBc67MjYjo2EXwNiyUuoFqwcR4zeSyGt6zS2F0MpJABA@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-bugs |
On Mon, Aug 20, 2018 at 4:20 PM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> On Thu, Aug 16, 2018 at 9:25 AM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>> On Wed, Aug 15, 2018 at 4:40 PM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
>> (b) Consider the presence of any window function calculation as
>> parallel-restricted operation.
>>
>
> For this, we need to mark all the window functions like row_number,
> rank, dense_rank, etc as parallel-restricted. Additionally, we also
> need to detect the presence of aggregate functions that act as window
> functions (when an OVER clause follows the call). Attached patch
> treat_window_func_calc_parallel_restricted_v1 implements the fix.
>
As this patch changes the catalog contents, we need to bump catalog
version number. However, I have left it for later once we get a
review and or testing of the patch.
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Igor Neyman | 2018-08-20 13:12:07 | RE: BUG #15340: FATAL ERROR: The application server could not be contacted. |
| Previous Message | Amit Kapila | 2018-08-20 10:50:06 | Re: BUG #15324: Non-deterministic behaviour from parallelised sub-query |