diff options
Diffstat (limited to 'src/backend/commands/vacuumlazy.c')
| -rw-r--r-- | src/backend/commands/vacuumlazy.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c index 60171470d3..0e0193d40e 100644 --- a/src/backend/commands/vacuumlazy.c +++ b/src/backend/commands/vacuumlazy.c @@ -448,6 +448,7 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, bool all_visible_according_to_vm; bool all_visible; bool has_dead_tuples; + TransactionId visibility_cutoff_xid = InvalidTransactionId; if (blkno == next_not_all_visible_block) { @@ -627,7 +628,8 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, { PageSetAllVisible(page); MarkBufferDirty(buf); - visibilitymap_set(onerel, blkno, InvalidXLogRecPtr, vmbuffer); + visibilitymap_set(onerel, blkno, InvalidXLogRecPtr, vmbuffer, + InvalidTransactionId); } UnlockReleaseBuffer(buf); @@ -759,6 +761,10 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, all_visible = false; break; } + + /* Track newest xmin on page. */ + if (TransactionIdFollows(xmin, visibility_cutoff_xid)) + visibility_cutoff_xid = xmin; } break; case HEAPTUPLE_RECENTLY_DEAD: @@ -853,7 +859,8 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, PageSetAllVisible(page); MarkBufferDirty(buf); } - visibilitymap_set(onerel, blkno, InvalidXLogRecPtr, vmbuffer); + visibilitymap_set(onerel, blkno, InvalidXLogRecPtr, vmbuffer, + visibility_cutoff_xid); } /* |