diff options
| -rw-r--r-- | src/backend/storage/smgr/md.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/backend/storage/smgr/md.c b/src/backend/storage/smgr/md.c index 85b71154006..c5b771c5311 100644 --- a/src/backend/storage/smgr/md.c +++ b/src/backend/storage/smgr/md.c @@ -1100,8 +1100,13 @@ _mdfd_openseg(SMgrRelation reln, ForkNumber forknum, BlockNumber segno, if (fd < 0) return NULL; - if (segno <= reln->md_num_open_segs[forknum]) - _fdvec_resize(reln, forknum, segno + 1); + /* + * Segments are always opened in order from lowest to highest, so we must + * be adding a new one at the end. + */ + Assert(segno == reln->md_num_open_segs[forknum]); + + _fdvec_resize(reln, forknum, segno + 1); /* fill the entry */ v = &reln->md_seg_fds[forknum][segno]; |