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help / color / mirror / Atom feedFrom: Chao Li <[email protected]>
To: Melanie Plageman <[email protected]>
Cc: Kirill Reshke <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Andrey Borodin <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Heikki Linnakangas <[email protected]>
Subject: Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
Date: Mon, 24 Nov 2025 17:31:31 +0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
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<CAAKRu_YS+Ocm=OzMaZnG4egFiE9v4VYfZ25DXd6jbwegqmGYbQ@mail.gmail.com>
<CAAKRu_ZGZSqhGt-RcmmfiSheC+1fjQdxy6_+oM-1jMn8hyVptQ@mail.gmail.com>
<CALdSSPg+B8RTzTXhJvCcKJBqgzhPZkq0E2oqxQdv74ZNZOMVzg@mail.gmail.com>
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<[email protected]>
> On Nov 24, 2025, at 16:07, Chao Li <[email protected]> wrote:
>
> 0006, 0007 look good, no comment.
I missed a nit comment in 0007:
7 - 0007
```
+ * To handle recovery conflict during logical decoding on standby, we must know
+ * if the table is a catalog table. Note that in visibilitymapdefs.h
+ * VISIBLITYMAP_XLOG_CATALOG_REL is also defined as (1 << 2). xl_heap_prune
+ * records should use XLHP_IS_CATALOG_REL, not VISIBILIYTMAP_XLOG_CATALOG_REL --
+ * even if they only contain updates to the VM.
```
VISIBLITYMAP_XLOG_CATALOG_REL missed “I” after “B”.
Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/
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