Re: Handle infinite recursion in logical replication setup

From: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
To: "shiy(dot)fnst(at)fujitsu(dot)com" <shiy(dot)fnst(at)fujitsu(dot)com>
Cc: vignesh C <vignesh21(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, "houzj(dot)fnst(at)fujitsu(dot)com" <houzj(dot)fnst(at)fujitsu(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "kuroda(dot)hayato(at)fujitsu(dot)com" <kuroda(dot)hayato(at)fujitsu(dot)com>, "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org>
Subject: Re: Handle infinite recursion in logical replication setup
Date: 2022-09-07 08:09:14
Message-ID: CAA4eK1LwjG--SUmSqFwXm80me+4A7h=ut4RviG5gRRuFZZr7_A@mail.gmail.com
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On Wed, Sep 7, 2022 at 1:09 PM shiy(dot)fnst(at)fujitsu(dot)com
<shiy(dot)fnst(at)fujitsu(dot)com> wrote:
>
> On Wed, Sep 7, 2022 12:23 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
> >
> >
> > Thanks for the comments, the attached v47 patch has the changes for the
> > same.
> >
>
> Thanks for updating the patch.
>
> Here is a comment.
>
> + for (i = 0; i < subrel_count; i++)
> + {
> + Oid relid = subrel_local_oids[i];
> + char *schemaname = get_namespace_name(get_rel_namespace(relid));
> + char *tablename = get_rel_name(relid);
> +
> + appendStringInfo(&cmd, "AND NOT (N.nspname = '%s' AND C.relname = '%s')\n",
> + schemaname, tablename);
> + }
>
> Would it be better to add "pfree(schemaname)" and "pfree(tablename)" after
> calling appendStringInfo()?
>

No, I don't think we need to do retail pfree of each and every
allocation as these allocations are made in the portal context which
will be freed by the command end.

--
With Regards,
Amit Kapila.

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