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| author | Robert Haas <rhaas@postgresql.org> | 2012-04-26 20:00:21 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2012-04-26 20:00:21 -0400 |
| commit | 3424bff90f40532527b9cf4f2ad9eaff750682f7 (patch) | |
| tree | 028c10eea2a93f672d9462ebb4dcef7097d316ca /src/include/access/xlog_internal.h | |
| parent | 92df2203437603d40417fe711c3cb7066ac4fdf5 (diff) | |
| download | postgresql-3424bff90f40532527b9cf4f2ad9eaff750682f7.tar.gz | |
Prevent index-only scans from returning wrong answers under Hot Standby.
The alternative of disallowing index-only scans in HS operation was
discussed, but the consensus was that it was better to treat marking
a page all-visible as a recovery conflict for snapshots that could still
fail to see XIDs on that page. We may in the future try to soften this,
so that we simply force index scans to do heap fetches in cases where
this may be an issue, rather than throwing a hard conflict.
Diffstat (limited to 'src/include/access/xlog_internal.h')
| -rw-r--r-- | src/include/access/xlog_internal.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h index c079a9aa8f..2020a3b41f 100644 --- a/src/include/access/xlog_internal.h +++ b/src/include/access/xlog_internal.h @@ -71,7 +71,7 @@ typedef struct XLogContRecord /* * Each page of XLOG file has a header like this: */ -#define XLOG_PAGE_MAGIC 0xD070 /* can be used as WAL version indicator */ +#define XLOG_PAGE_MAGIC 0xD071 /* can be used as WAL version indicator */ typedef struct XLogPageHeaderData { |