diff options
Diffstat (limited to 'src/backend/commands/vacuumlazy.c')
| -rw-r--r-- | src/backend/commands/vacuumlazy.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c index a5c024cc19b..9393fa0727a 100644 --- a/src/backend/commands/vacuumlazy.c +++ b/src/backend/commands/vacuumlazy.c @@ -705,15 +705,16 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, PageSetAllVisible(page); SetBufferCommitInfoNeedsSave(buf); } + /* * It's possible for the value returned by GetOldestXmin() to move * backwards, so it's not wrong for us to see tuples that appear to * not be visible to everyone yet, while PD_ALL_VISIBLE is already * set. The real safe xmin value never moves backwards, but * GetOldestXmin() is conservative and sometimes returns a value - * that's unnecessarily small, so if we see that contradiction it - * just means that the tuples that we think are not visible to - * everyone yet actually are, and the PD_ALL_VISIBLE flag is correct. + * that's unnecessarily small, so if we see that contradiction it just + * means that the tuples that we think are not visible to everyone yet + * actually are, and the PD_ALL_VISIBLE flag is correct. * * There should never be dead tuples on a page with PD_ALL_VISIBLE * set, however. |