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help / color / mirror / Atom feedFrom: Masahiko Sawada <[email protected]>
To: Amit Kapila <[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: Fri, 8 Jul 2022 20:20:51 +0900
Message-ID: <CAD21AoCAPkPxsqbe6ZTqOe0bcVrEWHmA3ObYQtyu0Bv8hC=z_g@mail.gmail.com> (raw)
In-Reply-To: <CAA4eK1JyJL7dACPQ51hQmSz5KrxghmABr_J9AZbSGzSLW3Ghig@mail.gmail.com>
References: <[email protected]>
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On Fri, Jul 8, 2022 at 5:59 PM Amit Kapila <[email protected]> wrote:
>
> On Fri, Jul 8, 2022 at 12:46 PM Masahiko Sawada <[email protected]> wrote:
> >
> > On Fri, Jul 8, 2022 at 3:27 PM Amit Kapila <[email protected]> wrote:
> > >
> >
> > > 1.
> > > In ReorderBufferGetCatalogChangesXacts(), isn't it better to use the
> > > list length of 'catchange_txns' to allocate xids array? If we can do
> > > so, then we will save the need to repalloc as well.
> >
> > Since ReorderBufferGetcatalogChangesXacts() collects all ongoing
> > catalog modifying transactions, the length of the array could be
> > bigger than the one taken last time. We can start with the previous
> > length but I think we cannot remove the need for repalloc.
> >
>
> It is using the list "catchange_txns" to form xid array which
> shouldn't change for the duration of
> ReorderBufferGetCatalogChangesXacts(). Then the caller frees the xid
> array after its use. Next time in
> ReorderBufferGetCatalogChangesXacts(), the fresh allocation for xid
> array happens, so not sure why repalloc would be required?
Oops, I mistook catchange_txns for catchange->xcnt. You're right.
Starting with the length of catchange_txns should be sufficient.
Regards,
--
Masahiko Sawada
EDB: https://www.enterprisedb.com/
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To: [email protected]
Cc: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Subject: Re: [BUG] Logical replication failure "ERROR: could not map filenode "base/13237/442428" to relation OID" with catalog modifying txns
In-Reply-To: <CAD21AoCAPkPxsqbe6ZTqOe0bcVrEWHmA3ObYQtyu0Bv8hC=z_g@mail.gmail.com>
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