diff options
Diffstat (limited to 'src/backend/access/heap/heapam.c')
| -rw-r--r-- | src/backend/access/heap/heapam.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index 1848bc5f2c0..26d96fd7fc0 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -7086,7 +7086,13 @@ log_heap_update(Relation reln, Buffer oldbuf, /* We need to log a tuple identity */ if (old_key_tuple) { - /* don't really need this, but its more comfy to decode */ + /* + * This isn't needed, and can't actually capture the contents of + * the tuple accurately (because t_len isn't guaranteed to be big + * enough to contain old tuples which can be up to 1 GB long). But + * previous versions of 9.4 used this, so we can't change the WAL + * format. + */ xlhdr_idx.header.t_infomask2 = old_key_tuple->t_data->t_infomask2; xlhdr_idx.header.t_infomask = old_key_tuple->t_data->t_infomask; xlhdr_idx.header.t_hoff = old_key_tuple->t_data->t_hoff; |