MIME-Version: 1.0
References: 
 <CAFiTN-u5D5o_AGNbHRZHaOqAMWkxLf+hSk_r9X3gv6HbLOB5+g@mail.gmail.com>
 <CALj2ACViThGQDYi-yeqUeHqG2Pozn2AiyvtDtjE6zhhbM0KsEA@mail.gmail.com>
 <CAA4eK1+44b3vd_OWfiaVNtjf5Njb5cek09pmKRmttBByeg0NoA@mail.gmail.com>
 <CAFiTN-v3L0WacCDx5dkOSonaZQbJfstXL4HrCPD1ahRdUsRnSg@mail.gmail.com>
 <CALj2ACW63uuxh0fSoxEAF8OMWhz1dJKSkp268WJDzf5BUqCf5g@mail.gmail.com>
 <CAFiTN-s9WWLOhW1TO27NtJwGf0bh2+MWyp3NEkZFeN_S5_p_rA@mail.gmail.com>
 <CAA4eK1LxnsEx5sMbQkK5MHAgXKPROMQXQ0n=fKMwz+UsfKQaMQ@mail.gmail.com>
 <CAD21AoDj+c4LXf2y4ESR-gVyv9d8V0G4R8R9pn-PcmT5zPzYcg@mail.gmail.com>
 <CAA4eK1KokmAwNOL6bS-ip_E3F96PiQTjC4j-M+5vD1T6uUyi3Q@mail.gmail.com>
 <CAFiTN-vFKE8E_N6h+peX9DP92mxCeFdm5A9Esn4DkLmNcZ-dOA@mail.gmail.com>
 <CAFiTN-shLYf-fOTQ_dBf3Xfx05gxs_8d93MHZXyyz6w2Bg5geQ@mail.gmail.com>
 <CAFiTN-tEgkKQHUikn6iBFCYf7XOObR7ncUq=OVh7WEk=6P4ymw@mail.gmail.com>
 <CAFiTN-tQiakd8m+-d6WN6RpJXSv_JcropZ2oGzme4d1JudQhYg@mail.gmail.com>
 <CAJpy0uDKbYWt+YPADj=4fHEvrGEWgnG1n_YsiGT_EZiZf0VSAw@mail.gmail.com>
 <CAFiTN-t82BiXen+HfdR9jZyOpuSO92xonnUK=khXsiZWBfOxMA@mail.gmail.com>
 <CAJpy0uAu2paxGAEffD=vaBTW9Jqbtxxawb8K8FgiASfeKPnGog@mail.gmail.com>
 <CAJpy0uC0ZWgHOivJ102A1fMkppwK3RuSMafRPKyjwkmJrjhVUw@mail.gmail.com>
 <CAFiTN-vFV9-zajrwjYHYyFnyQsooOAXW4CpxB5f-iT3APjOtoQ@mail.gmail.com>
 <CAJpy0uBeU1dZgaqsSVKc=P=EVUKxRgVuHR8jDXFL-HLibbE-kQ@mail.gmail.com>
 <CAA4eK1+FOkOxhzVLAnDymoNjp4i98H-L1+ZsWDgJEv-ndnTzTA@mail.gmail.com>
 <CAFiTN-sVK6Bp+BawCJU_WpAXQSTX4OkKmce5EE4YNBgD-XSjZw@mail.gmail.com>
 <CAA4eK1LbjV0bctib9wUnBpEkC+2rZFPnGuRtrKuc5AtUAzum+A@mail.gmail.com>
 <CAFiTN-vq50N3QP9p3_SH+tJ8Pn=uRDb0X4qEcQZYcGW9AX88rQ@mail.gmail.com>
 <CAFiTN-u3+zRGPESP5kUUfa6NxaWh1HL-gd1225KJ0Uvzi1urow@mail.gmail.com>
 <CAA4eK1L4iNk6mNTC83PbYrRfUdtivH4U961PkdFfOO7mvc=USg@mail.gmail.com>
 <CAFiTN-v+Mh64UfR5zb5rwgyGm6HS80XRSZ_XeaWkg8=+s9o3Kg@mail.gmail.com>
 <CAFiTN-s3ZFHteQsiC3H4=AjTWxuwN-w69XQ3xL5X6YOMTua4pA@mail.gmail.com>
 <CAJpy0uDe724nY59j-8hMapZ_Fru1Wo-NucF4Ea1B3Jrw=+J+UQ@mail.gmail.com>
 <CAFiTN-uR=86L_5tyiA7n73EXCSCuDfQKfL5O=c8n7zZom8_ONQ@mail.gmail.com>
 <CAD21AoDfOS-J0M9WbM3D20eGbSPzbfLQ-9XoYkxO4AZ9twqyvg@mail.gmail.com>
 <CAFiTN-vMTg2X7vwfHLr5Gvy8ViV63_iaEcpHmM8V5GpA9-u8cg@mail.gmail.com>
 <CAA4eK1+b2Ws0e_ZYJsgZAPn7VWndxAK_YM_QMKcfXst3e7F6Jg@mail.gmail.com>
 <CAFiTN-v6hFKMPrSyTBsz=AtEETYMbOxrqvhZJsPQqKgQc4WCLw@mail.gmail.com>
 <CAA4eK1KV3rYkaxys5fh-PtE9kq5xrFbiaRpOSPoRgQG494ek+g@mail.gmail.com>
 <CAFiTN-utvu=QjY1QQ1a_TvkpkpvesMWo9M8wTFYLaOTPdpOJvw@mail.gmail.com>
 <CAA4eK1+HoSOEqNwT3twArPNx4_D7hSUoEg2LnYhX8n9iUwhXgQ@mail.gmail.com>
 <CAFiTN-tqmsfW0Sk=1RhzuduxqLrf9KEc8VOvBae+4aYxWTJwuA@mail.gmail.com>
 <CAA4eK1JmCQ=DHe3HsqpX+P3mGDUd_Z7E7oAxdstK6822W6tuCw@mail.gmail.com>
 <CAFiTN-uE4eAUYewuq3c5deAt3TtVork+H6rkUHRv68cOGr5rmQ@mail.gmail.com>
 <CAFiTN-sJbhPX+LbA8YuQeYJpfGA2XA+OKXf8jCm04RoJOyzLvw@mail.gmail.com>
 <CAJpy0uBPOyWj9itFjHzGXfrUuYS8KGmAvgdcV_9FPjWZ0EZz_w@mail.gmail.com>
 <CAFiTN-s=iLE4qM4qmw9yXKqW09R_c_HqaSGeZXJ2EaTVfXss+g@mail.gmail.com>
 <CAA4eK1KYo0vZpPSRc_4gVpa06-J39gxjs3tHFyckgkBfYJSfFA@mail.gmail.com>
 <CAFiTN-vrKc6OWzrg6yvpwYcj79k=zkrDp3uwiZzjwrWLJAq6tw@mail.gmail.com>
 <CAA4eK1LmvrfEgn1NUZZ=E3yMCjQdNZ5=_SBEry73-EmF6jM_PQ@mail.gmail.com>
 <CAFiTN-vjfub5b3PqPQzfOw9BSjm8jt28ott+Hoz9CrRxJHzYkg@mail.gmail.com>
 <CAFiTN-v=ANapYvRK+SOy2wJb4CSuD6Vb6_bTGuReM9Dv+3tucA@mail.gmail.com>
 <CALDaNm1zEYoSdf2Ns-=UJRw95E5sbfpB0oaNUWtRJN27Q1Knhw@mail.gmail.com>
 <CALDaNm3USsXVNBsfdpkp60HVgrTV4taWMk1xZYNBa7QUF=V0jg@mail.gmail.com>
 <CAFiTN-sNg9ghLNkB2Kn0SwBGOub9acc99XZZU_d5NAcyW-yrEg@mail.gmail.com>
 <CAJpy0uAF3EYcYdpTHdKMeXfvaPbNvnWrZUATrSLL1hqjao=33A@mail.gmail.com>
 <CAFiTN-uikggCKp2LscTorKY5d3KF9j93DW0xebDcRX86G+ZsSw@mail.gmail.com>
 <CAJpy0uDaOoVK8S3_xxTAcTDpfK1AY7tApw7nPOZG_gUz+DMi=Q@mail.gmail.com>
 <CAA4eK1+AdeC5B9xrAXSKWGtTh-0d8xdD=fZttmOBm+c8o8thAQ@mail.gmail.com>
 <CAFiTN-skBQAeuzuUd+PDK0Gqc8g+4x9ypBMwJhOrmW8ZCFKGSA@mail.gmail.com>
 <CAJpy0uCdrsW5T+okq7xTOVxagje7FW3DOeY5B0CGKYa5VqF_tQ@mail.gmail.com>
 <CAFiTN-u+_mFj9caYYFO7=_YHFXk5y=vvOm2H2=5hctYktmAVGA@mail.gmail.com>
 <CALDaNm1aivk9KgQ5daeF6YZzuE+0wWc2yb7wb6qikNyvfPN0Sg@mail.gmail.com>
 <CAJpy0uD6fTEUYJx3+yDbvB=VW7c5AaGoeSd7iwHdYYO=kYGn3g@mail.gmail.com>
 <CALDaNm2YOOdJ25X1sJ+DYz37K6Qi4g0ZNFHb_pQMF9UqancnEA@mail.gmail.com>
 <CAHut+PtMS5bENS0DVtBj+s3kUEOq61+hSkqLODjFB78egB0imQ@mail.gmail.com>
 <CAFiTN-s_M83sfs+MHHbUrMesjsCPN4JWxY5MChCEiY1U-u7=9g@mail.gmail.com>
 <CAFiTN-vj8NTm9w_L2XdhxJCub_RZw__YVUgfXa1B1kJzJctRNw@mail.gmail.com>
 <CAJpy0uBDLnfhuSiev8W9ZMFNTzUmqhds2dKayUpLoN-z1dtsLA@mail.gmail.com>
 <CAFiTN-uL9f0X+=Ep4BbAPvaTJA7S4XHM--G4BsnPJw4uJW7EGQ@mail.gmail.com>
 <CAJpy0uDG=t-y_m8t1zpBzfz9viP3K8dyQgkruaraVT85UtTkrg@mail.gmail.com>
 <CAFiTN-tR8Rhs8uhfbck0Ac4dd1MopvvYgjK39nWyNXRp9Z3Qww@mail.gmail.com>
 <CAA4eK1Kf15UpNmpTTE2XyX=9PE_oTpOoy5xqg3rFWbxwwP4Rbg@mail.gmail.com>
 <CAFiTN-tNqb0vjuadDz-as67ksSXa=aEK+JW=4b54RVmkUK1m2Q@mail.gmail.com>
 <CAFiTN-vDCxx6ydUFo59L8qNBbierg4as3TGPPiavR7UZjYurzA@mail.gmail.com>
 <CAHut+PsWms218ENALnytLEV4NpxjOrAYhChLDaMaeE65-vNgrQ@mail.gmail.com>
 <CAFiTN-v9i9RmDvdUmtMUow4=b+nr0k7LKMyEQ+6ZF=EVdfBhBA@mail.gmail.com>
 <CALDaNm2YTKwPDjt9OV49RgM0zbkWhMhNu228bj_7f+zzcPb-ew@mail.gmail.com>
 <CAFiTN-t_4XvofM3an-WmykqnPE+9wf9U+o2M7p1CWd9eXkN88Q@mail.gmail.com>
 <CAHut+PuaqNDfDu_3xkZR4OYxw-B7ew_WjpLXCBvMcSBJz2K6Xg@mail.gmail.com>
 <CAFiTN-uqNN9S_hRuda_th5MEpywa15g+XO00yM6tNJ-spGRRJw@mail.gmail.com>
 <CABdArM6QxXatkGefTHy__HgaYHBvbKesffeXzT8Vn-kvcvGK4w@mail.gmail.com>
 <CAFiTN-tgMWr=TGPhs9BxaPuSC_jhM7sJJ4fHedE5W6=h40jLfA@mail.gmail.com>
 <CABdArM5fgzfyC2mH3YGB8t8cJBHWqAG1BS6rJMk7mX-8=9d=Cg@mail.gmail.com>
 <CABdArM568KF4WXdFX_aZkCiDK8R71Wpep0gC2a+cV8BMobwkrg@mail.gmail.com>
 <CAFiTN-vQ0tu18BD3UmKPb0rzZyFMQAVgGbdpMA8iYLX7PZOqOA@mail.gmail.com>
 <CALDaNm20PDtmG2E3qaTC+YuL5twv+c9k573wL3sb=OwgmZphxQ@mail.gmail.com>
 <CAA4eK1LhOHa_TEznw+gFoq+w0vMvvsDG2g9Xq8Mwa8xZMY73og@mail.gmail.com>
 <CAFiTN-vPDqrQ2rHykNgd+groFxqwBYFQF97R-Co2EmtUkV6MTg@mail.gmail.com>
 <CAFiTN-vsd=wNiEPXPQhZnipAb--+mBUC01M-pcjBjbRockgCUA@mail.gmail.com>
 <CAJpy0uCjSq_gUCJBfURhqtB6bLvkKSUL-sVXpaGKjEapv5+t+Q@mail.gmail.com>
 <CAFiTN-uZ-LaStAY3NuCY-nb7GCB9joiHX7HtHEMseJ0xfnqVSg@mail.gmail.com>
 <CAFiTN-vhJxRW5NQ628oidnk0KtHwKt11dW9-+vxqpXLTgjiYiA@mail.gmail.com>
 <CALDaNm1cJURibYKY4+DuNosjM72C9oGheUF-roMyff__+AsKBw@mail.gmail.com>
 <CAJpy0uD1_77TDAFc4jE-94X-WUus7Q3gGU0pXfC+Tticq1hFvA@mail.gmail.com>
 <CAA4eK1LFcSc4XCj4mU-cv27F_6n6=+ehJ=YAsAnyBbz4Sv_tVg@mail.gmail.com>
 <CAFiTN-s5ZtjXKrSbam7TNWJ9Ax-kCancXcestAnx2by7dK0-UA@mail.gmail.com>
 <CAFiTN-u=Da32mXyz8jocEGtuLSG4ccXXj_aEzUTPp2zkLb3MVA@mail.gmail.com>
 <CALDaNm1qY5e0thfsDB2uWXqZn4hgTWTxiUDwcF1hWA-jodsKYg@mail.gmail.com>
 <CALDaNm1nFtv3dtdRdbqWo2Rf_av7XbxDfK1Orqjcqs_Su_cLRQ@mail.gmail.com>
 <CABdArM7R498qC5Fr42aU_q-2Sc5QsT4dyKgmO_f6Uy=8oCAFXA@mail.gmail.com>
 <CAFiTN-sRZ+Z_9B3ue2L4zkbcfmPjjcAjcR1C+px1PyAs+HGsSg@mail.gmail.com>
 <CAFiTN-sdcjf9xJ2M-=ab5e4y662tTmFFiP4gHL44tC9PcQozcw@mail.gmail.com>
 <CAJpy0uCdxiAVsVr95S=6vngxPGGFaSCoSyzb0B9DdF9oJucsfQ@mail.gmail.com>
 <CALDaNm1ZOWAbv5WCsORPBqo7tjHn4f7E+B5LZhExfnPMs-zo9A@mail.gmail.com>
 <CABdArM7F08dw2B9k5Vi_hY1QZXAQqHdA5ttupoKuKSLDd5b1eQ@mail.gmail.com>
 <CALDaNm1yTG2JntdiAAsEzT8XCe8ifLAZjBffnDJP=i5JxKmeEA@mail.gmail.com>
In-Reply-To: 
 <CALDaNm1yTG2JntdiAAsEzT8XCe8ifLAZjBffnDJP=i5JxKmeEA@mail.gmail.com>
From: shveta malik <shveta.malik@gmail.com>
Date: Wed, 20 May 2026 12:02:11 +0530
Message-ID: 
 <CAJpy0uCX53c40xopqmHtWSWBmh78BqhLVGXa88fU42eOi6w+LQ@mail.gmail.com>
Subject: Re: Proposal: Conflict log history table for Logical Replication
To: vignesh C <vignesh21@gmail.com>
Cc: Nisha Moond <nisha.moond412@gmail.com>,
 Dilip Kumar <dilipbalaut@gmail.com>,
	Amit Kapila <amit.kapila16@gmail.com>, Peter Smith <smithpb2250@gmail.com>,
	Masahiko Sawada <sawada.mshk@gmail.com>,
	Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
 shveta malik <shvetamalik@gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Archived-At: 
 <https://www.postgresql.org/message-id/CAJpy0uCX53c40xopqmHtWSWBmh78BqhLVGXa88fU42eOi6w%2BLQ%40mail.gmail.com>
Precedence: bulk

On Tue, May 19, 2026 at 7:30=E2=80=AFPM vignesh C <vignesh21@gmail.com> wro=
te:
>
> Rest of the comments are handled, the attached v36 version patches
> have the changes for the same.
> Also the comment from [1] has been fixed in this version.
>

Thanks Vignesh.

A few comments for 0001 and 002 combined (I merged them and reviewed
for ease of review)

1)

+ * IsConflictLogTableClass
+ * True iff namespace is pg_conflict.
+ *
+ * Does not perform any catalog accesses.
  */
 bool
-IsConflictClass(Form_pg_class reltuple)
+IsConflictLogTableClass(Form_pg_class reltuple)

I think this function is trying to find if the reltuple is a CLT
rather than namepspace is pg_conflict.
We should change this comment. See IsToastRelation, IsToastClass.

Suggestion:
True iff Form_pg_class tuple represents a subscription-specific
Conflict Log Table.

2)

Both DropSubscription and AlterSubscription has below code to drop CLT:

+ if (OidIsValid(subconflictlogrelid))
+ {
+ char *conflictrelname =3D get_rel_name(subconflictlogrelid);
+
+ /*
+ * Conflict log tables are recorded as internal dependencies of the
+ * subscription.  We must drop the dependent objects before the
+ * subscription itself is removed.  By using
+ * PERFORM_DELETION_SKIP_ORIGINAL, we ensure that only the conflict log
+ * table is reaped while the subscription remains for the final
+ * deletion step.
+ */
+ ObjectAddressSet(object, SubscriptionRelationId, subid);
+ performDeletion(&object, DROP_CASCADE,
+ PERFORM_DELETION_INTERNAL |
+ PERFORM_DELETION_SKIP_ORIGINAL);
+
+ ereport(NOTICE,
+ errmsg("dropped conflict log table \"%s\" for subscription \"%s\"",
+    get_qualified_objname(PG_CONFLICT_NAMESPACE, conflictrelname),
+    subname));
+ }

Why don't we create a function
drop_conflict_log_table(subconflictlogrelid) and use it both places.

3)
+++ b/src/backend/commands/subscriptioncmds.c

+#include "catalog/heap.h"
+#include "catalog/pg_am_d.h"

It compiles now without these inclusion. 002 should remove these as well.

4)
AlterSubscription:
+ bool want_table =3D (opts.conflictlogdest =3D=3D CONFLICT_LOG_DEST_TABLE =
||
+    opts.conflictlogdest =3D=3D CONFLICT_LOG_DEST_ALL);
+ bool has_oldtable =3D (old_dest =3D=3D CONFLICT_LOG_DEST_TABLE ||
+ old_dest =3D=3D CONFLICT_LOG_DEST_ALL);


Shall we replace checks at both places with CONFLICTS_LOGGED_TO_TABLE

~~

003,004: No comments

~~

Reviewing further.

thanks
Shveta