Re: Conflict detection for update_deleted in logical replication

On Fri, Jun 20, 2025 at 4:48 PM Zhijie Hou (Fujitsu)
<houzj(dot)fnst(at)fujitsu(dot)com> wrote:
>
> Here is the V39 patch set which includes the following changes:
>

1.
-static void
-create_conflict_slot_if_not_exists(void)
+void
+ApplyLauncherCreateConflictDetectionSlot(void)

I am not so sure about adding ApplyLauncher in front of this function
name. I see most others exposed from this file add such a prefix, but
this one looks odd to me as it has nothing specific to the launcher,
though we use it in launcher? How about
CreateConflictDetectionSlot(void)?

2.
static void
create_logical_replication_slots(void)
{
+ if (!count_old_cluster_logical_slots())
+ return;
+

Doing this count twice (once here and once at the caller of
create_logical_replication_slots) seems redundant.

Apart from the above, attached please find a diff patch atop 0001,
0002, 0003. I think the first three patches look in a reasonable shape
now, can we merge them (0001, 0002, 0003)?

--
With Regards,
Amit Kapila.