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 subtransaction coredump as below:
> So the root cause is the Parallel Workers process set the TransactionXmin > with later transcation snapshot. When parallel scan, 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
