Hi,
On 2021-05-07 11:32:57 +0800, Pengchengliu wrote:
> Hi Hackers，
>
> Last email, format error, missing some information, so I resend this email.
>
> With PG 13.2(3fb4c75e857adee3da4386e947ba58a75f3e74b7), I tested subtransaction with parallel scan, I got a
subtransactioncoredump as below:
> So the root cause is the Parallel Workers process set the TransactionXmin with later transcation snapshot. When
parallelscan, Parallel Workers process use the older active snapshot.
>
> It leads to subtrans assert coredump. I don't know how to fix it. Is there any ideas?
Do you have steps to reliably reproduce this?
Greetings,
Andres Freund
