diff options
Diffstat (limited to 'src/backend/access/nbtree/nbtxlog.c')
| -rw-r--r-- | src/backend/access/nbtree/nbtxlog.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/access/nbtree/nbtxlog.c b/src/backend/access/nbtree/nbtxlog.c index 82337f8ef2..7250b4f0b8 100644 --- a/src/backend/access/nbtree/nbtxlog.c +++ b/src/backend/access/nbtree/nbtxlog.c @@ -107,8 +107,9 @@ _bt_restore_meta(XLogReaderState *record, uint8 block_id) pageop->btpo_flags = BTP_META; /* - * Set pd_lower just past the end of the metadata. This is not essential - * but it makes the page look compressible to xlog.c. + * Set pd_lower just past the end of the metadata. This is essential, + * because without doing so, metadata will be lost if xlog.c compresses + * the page. */ ((PageHeader) metapg)->pd_lower = ((char *) md + sizeof(BTMetaPageData)) - (char *) metapg; |