| From: | Nikhil Sontakke <nikhil(dot)sontakke(at)2ndquadrant(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Nikhil Sontakke <nikhils(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, David Steele <david(at)pgmasters(dot)net>, Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, Sokolov Yura <y(dot)sokolov(at)postgrespro(dot)ru>, Stas Kelvich <s(dot)kelvich(at)postgrespro(dot)ru>, Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] logical decoding of two-phase transactions |
| Date: | 2018-07-23 15:52:18 |
| Message-ID: | 3B37B16B-A473-4352-ABCF-F23AE314D4F7@2ndquadrant.com |
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| Lists: | pgsql-hackers |
Hi Andres,
>> We can find out if the snapshot is a logical decoding one by virtue of
>> its "satisfies" function pointing to HeapTupleSatisfiesHistoricMVCC.
>
> I think we even can just do something like a global
> TransactionId check_if_transaction_is_alive = InvalidTransactionId;
> and just set it up during decoding. And then just check it whenever it's
> not set tot InvalidTransactionId.
>
>
Ok. I will work on something along these lines and re-submit the set of patches.
Regards,
Nikhils
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