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| author | Peter Geoghegan <pg@bowt.ie> | 2023-04-17 09:58:18 -0700 |
|---|---|---|
| committer | Peter Geoghegan <pg@bowt.ie> | 2023-04-17 09:58:18 -0700 |
| commit | cd7cdc550c2a00027d6ec1810d064ad636250b1f (patch) | |
| tree | a0b018a10da22d9bb5b533d168b92931b689b48e /src | |
| parent | d48ac0070cff197125088959e5644ed051322f5e (diff) | |
| download | postgresql-cd7cdc550c2a00027d6ec1810d064ad636250b1f.tar.gz postgresql-cd7cdc550c2a00027d6ec1810d064ad636250b1f.zip | |
Fix incorrect comment about nbtree WAL record.
The nbtree VACUUM WAL record stores its page offset number payload in
blk 0 (just like the closely related nbtree DELETE WAL record). Commit
ebd551f5 fixed a similar issue with the DELETE WAL record, but missed
this one.
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/access/nbtxlog.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/include/access/nbtxlog.h b/src/include/access/nbtxlog.h index a0310c96fb1..7dd9fd02065 100644 --- a/src/include/access/nbtxlog.h +++ b/src/include/access/nbtxlog.h @@ -201,7 +201,7 @@ typedef struct xl_btree_reuse_page * when btinsert() is called. * * The records are very similar. The only difference is that xl_btree_delete - * has a snapshotConflictHorizon field to generate recovery conflicts. + * have snapshotConflictHorizon/isCatalogRel fields for recovery conflicts. * (VACUUM operations can just rely on earlier conflicts generated during * pruning of the table whose TIDs the to-be-deleted index tuples point to. * There are also small differences between each REDO routine that we don't go @@ -225,9 +225,13 @@ typedef struct xl_btree_vacuum 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) ITEMS + *---- + */ } xl_btree_vacuum; #define SizeOfBtreeVacuum (offsetof(xl_btree_vacuum, nupdated) + sizeof(uint16)) @@ -244,7 +248,7 @@ typedef struct xl_btree_delete * In payload of blk 0 : * - DELETED TARGET OFFSET NUMBERS * - UPDATED TARGET OFFSET NUMBERS - * - UPDATED TUPLES METADATA (xl_btree_update) ARRAY + * - UPDATED TUPLES METADATA (xl_btree_update) ITEMS *---- */ } xl_btree_delete; |