| From: | vignesh C <vignesh21(at)gmail(dot)com> |
|---|---|
| To: | Greg Nancarrow <gregn4422(at)gmail(dot)com> |
| Cc: | Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> |
| Subject: | Re: Parallel copy |
| Date: | 2020-10-07 18:48:42 |
| Message-ID: | CALDaNm1GUNOpPoz8imngX1_0f5k8W-YNZ7oE7B9PyRGe_vWU+w@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Sep 29, 2020 at 3:16 PM Greg Nancarrow <gregn4422(at)gmail(dot)com> wrote:
>
> Hi Vignesh and Bharath,
>
> Seems like the Parallel Copy patch is regarding RI_TRIGGER_PK as
> parallel-unsafe.
> Can you explain why this is?
Yes we don't need to restrict parallelism for RI_TRIGGER_PK cases as
we don't do any command counter increments while performing PK checks
as opposed to RI_TRIGGER_FK/foreign key checks. We have modified this
in the v6 patch set.
Regards,
Vignesh
EnterpriseDB: http://www.enterprisedb.com
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