diff options
Diffstat (limited to 'src/third_party/wiredtiger/src/btree/bt_ret.c')
| -rw-r--r-- | src/third_party/wiredtiger/src/btree/bt_ret.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/third_party/wiredtiger/src/btree/bt_ret.c b/src/third_party/wiredtiger/src/btree/bt_ret.c index f17fa1b85d1..7212de72d6e 100644 --- a/src/third_party/wiredtiger/src/btree/bt_ret.c +++ b/src/third_party/wiredtiger/src/btree/bt_ret.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2014-2016 MongoDB, Inc. + * Copyright (c) 2014-2017 MongoDB, Inc. * Copyright (c) 2008-2014 WiredTiger, Inc. * All rights reserved. * @@ -147,9 +147,13 @@ __wt_key_return(WT_SESSION_IMPL *session, WT_CURSOR_BTREE *cbt) cursor = &cbt->iface; /* - * We may already have an internal key, in which case the cursor may - * not be set up to get another copy (for example, when we rely on a - * search-function result). + * We may already have an internal key and the cursor may not be set up + * to get another copy, so we have to leave it alone. Consider a cursor + * search followed by an update: the update doesn't repeat the search, + * it simply updates the currently referenced key's value. We will end + * up here with the correct internal key, but we can't "return" the key + * again even if we wanted to do the additional work, the cursor isn't + * set up for that because we didn't just complete a search. */ F_CLR(cursor, WT_CURSTD_KEY_EXT); if (!F_ISSET(cursor, WT_CURSTD_KEY_INT)) { |