Hi,
On 1/6/23 11:05 AM, Drouvot, Bertrand wrote:
Hi hackers,
Please find attached a patch to $SUBJECT.
The wrong comments have been discovered by Robert in [1].
Submitting this here as a separate thread so it does not get lost in the
logical decoding
on standby thread.
[1]:
https://www.postgresql.org/message-id/CA%2BTgmoYTTsxP8y6uknZvCBNCRq%2B1FJ4zGbX8Px1TGW459fGsaQ%40mail.gmail.com
Looking forward to your feedback,
Regards,
It looks like I did not create a CF entry for this one: fixed with [1].
Also, while at it, adding a commit message in V2 attached.
[1]: https://commitfest.postgresql.org/43/4235/
Regards,
--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
From 075a8d1c3dbc1ef339c35f719faef758f855614e Mon Sep 17 00:00:00 2001
From: Bertrand Drouvot <bertranddrouvot...@gmail.com>
Date: Thu, 2 Mar 2023 12:46:01 +0000
Subject: [PATCH v2] Fix comments in gistxlogDelete, xl_heap_freeze_page and
xl_btree_delete
gistxlogDelete claims that OffsetNumbers are in payload of blk 0, which is not
as they follow the main payload.
xl_heap_freeze_page claims that freeze plans and offset numbers follow, but
they don't: they're in the data for block 0.
xl_btree_delete claims that the data follows but they are attached to block 0.
This commit fixes the related comments.
---
src/include/access/gistxlog.h | 4 +---
src/include/access/heapam_xlog.h | 5 +++--
src/include/access/nbtxlog.h | 9 ++++++---
3 files changed, 10 insertions(+), 8 deletions(-)
100.0% src/include/access/
diff --git a/src/include/access/gistxlog.h b/src/include/access/gistxlog.h
index 09f9b0f8c6..2ce9366277 100644
--- a/src/include/access/gistxlog.h
+++ b/src/include/access/gistxlog.h
@@ -52,9 +52,7 @@ typedef struct gistxlogDelete
TransactionId snapshotConflictHorizon;
uint16 ntodelete; /* number of deleted offsets */
- /*
- * In payload of blk 0 : todelete OffsetNumbers
- */
+ /* TODELETE OFFSET NUMBER ARRAY FOLLOWS */
} gistxlogDelete;
#define SizeOfGistxlogDelete (offsetof(gistxlogDelete, ntodelete) +
sizeof(uint16))
diff --git a/src/include/access/heapam_xlog.h b/src/include/access/heapam_xlog.h
index 8cb0d8da19..a2c67d1cd3 100644
--- a/src/include/access/heapam_xlog.h
+++ b/src/include/access/heapam_xlog.h
@@ -345,8 +345,9 @@ typedef struct xl_heap_freeze_page
TransactionId snapshotConflictHorizon;
uint16 nplans;
- /* FREEZE PLANS FOLLOW */
- /* OFFSET NUMBER ARRAY FOLLOWS */
+ /*
+ * In payload of blk 0 : FREEZE PLANS and OFFSET NUMBER ARRAY
+ */
} xl_heap_freeze_page;
#define SizeOfHeapFreezePage (offsetof(xl_heap_freeze_page, nplans) +
sizeof(uint16))
diff --git a/src/include/access/nbtxlog.h b/src/include/access/nbtxlog.h
index edd1333d9b..e7a9711767 100644
--- a/src/include/access/nbtxlog.h
+++ b/src/include/access/nbtxlog.h
@@ -236,9 +236,12 @@ typedef struct xl_btree_delete
uint16 ndeleted;
uint16 nupdated;
- /* DELETED TARGET OFFSET NUMBERS FOLLOW */
- /* UPDATED TARGET OFFSET NUMBERS FOLLOW */
- /* UPDATED TUPLES METADATA (xl_btree_update) ARRAY FOLLOWS */
+ /*
+ * In payload of blk 0 :
+ * - DELETED TARGET OFFSET NUMBERS
+ * - UPDATED TARGET OFFSET NUMBERS
+ * - UPDATED TUPLES METADATA (xl_btree_update) ARRAY
+ */
} xl_btree_delete;
#define SizeOfBtreeDelete (offsetof(xl_btree_delete, nupdated) +
sizeof(uint16))
--
2.34.1
