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help / color / mirror / Atom feedFrom: Amit Kapila <[email protected]>
To: Masahiko Sawada <[email protected]>
Cc: [email protected] <[email protected]>
Cc: Kyotaro Horiguchi <[email protected]>
Cc: Drouvot, Bertrand <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Oh, Mike <[email protected]>
Subject: Re: [BUG] Logical replication failure "ERROR: could not map filenode "base/13237/442428" to relation OID" with catalog modifying txns
Date: Wed, 20 Jul 2022 10:48:55 +0530
Message-ID: <CAA4eK1LpxNwGKntRJSND8H-DmN8XuZYoaooQmaX4+g-ePqg2=Q@mail.gmail.com> (raw)
In-Reply-To: <CAD21AoBKb_XMdOO0vCAHKieWYqHmJnEN0bGmV5j7PvOGOEkmrQ@mail.gmail.com>
References: <[email protected]>
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On Wed, Jul 20, 2022 at 9:01 AM Masahiko Sawada <[email protected]> wrote:
>
> On Wed, Jul 20, 2022 at 12:11 PM Amit Kapila <[email protected]> wrote:
> >
> > On Tue, Jul 19, 2022 at 7:28 PM Masahiko Sawada <[email protected]> wrote:
> >
> > Why do you think we can't remove
> > ReorderBufferInitialXactsSetCatalogChanges() from the back branch
> > patch? I think we don't need to change the existing function
> > ReorderBufferXidHasCatalogChanges() but instead can have a wrapper
> > like SnapBuildXidHasCatalogChanges() similar to master branch patch.
>
> IIUC we need to change SnapBuildCommitTxn() but it's exposed.
>
> Currently, we call like DecodeCommit() -> SnapBuildCommitTxn() ->
> ReorderBufferXidHasCatalogChanges(). If we have a wrapper function, we
> call like DecodeCommit() -> SnapBuildCommitTxn() ->
> SnapBuildXidHasCatalogChanges() ->
> ReorderBufferXidHasCatalogChanges(). In
> SnapBuildXidHasCatalogChanges(), we need to check if the transaction
> has XACT_XINFO_HAS_INVALS, which means DecodeCommit() needs to pass
> either parsed->xinfo or (parsed->xinfo & XACT_XINFO_HAS_INVALS != 0)
> down to SnapBuildXidHasCatalogChanges(). However, since
> SnapBuildCommitTxn(), between DecodeCommit() and
> SnapBuildXidHasCatalogChanges(), is exposed we cannot change it.
>
Agreed.
> Another idea would be to have functions, say
> SnapBuildCommitTxnWithXInfo() and SnapBuildCommitTxn_ext(). The latter
> does actual work of handling transaction commits and both
> SnapBuildCommitTxn() and SnapBuildCommit() call
> SnapBuildCommitTxnWithXInfo() with different arguments.
>
Do you want to say DecodeCommit() instead of SnapBuildCommit() in
above para? Yet another idea could be to have another flag
RBTXN_HAS_INVALS which will be set by DecodeCommit for top-level TXN.
Then, we can retrieve it even for each of the subtxn's if and when
required.
--
With Regards,
Amit Kapila.
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Subject: Re: [BUG] Logical replication failure "ERROR: could not map filenode "base/13237/442428" to relation OID" with catalog modifying txns
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