Import wiredtiger: 7cfc9f4732503223c878f2ac404e18b9f327845e from branch mongodb-5.0

ref: f7fe74a143..7cfc9f4732
for: 5.0.11

WT-9477 Don't allow checkpoint triggering internal page split which leads to corrupted internal page in the checkpoint (#8046) (#8166)

2 files changed, 10 insertions, 3 deletions

diff --git a/src/third_party/wiredtiger/import.data b/src/third_party/wiredtiger/import.data
index 4eafa95b214..5a7d6a5fbb7 100644
--- a/src/third_party/wiredtiger/import.data
+++ b/src/third_party/wiredtiger/import.data
@@ -2,5 +2,5 @@
     "vendor": "wiredtiger",
     "github": "wiredtiger/wiredtiger.git",
     "branch": "mongodb-5.0",
-    "commit": "f7fe74a1439a9fcc637ddf5304b36e3737182fe1"
+    "commit": "7cfc9f4732503223c878f2ac404e18b9f327845e"
 }
diff --git a/src/third_party/wiredtiger/src/btree/bt_split.c b/src/third_party/wiredtiger/src/btree/bt_split.c
index 05bac9aabe8..baa3a36456d 100644
--- a/src/third_party/wiredtiger/src/btree/bt_split.c
+++ b/src/third_party/wiredtiger/src/btree/bt_split.c
@@ -1271,8 +1271,15 @@ __split_parent_climb(WT_SESSION_IMPL *session, WT_PAGE *page)
      * to a different part of the tree where it will be written; in other words, in one part of the
      * tree we'll skip the newly created insert split chunk, but we'll write it upon finding it in a
      * different part of the tree.
-     */
-    if (!__wt_btree_can_evict_dirty(session)) {
+     *
+     * Historically we allowed checkpoint itself to trigger an internal split here. That wasn't
+     * correct, since if that split climbs the tree above the immediate parent the checkpoint walk
+     * will potentially miss some internal pages. This is wrong as checkpoint needs to reconcile the
+     * entire internal tree structure. Non checkpoint cursor traversal doesn't care the internal
+     * tree structure as they just want to get the next leaf page correctly. Therefore, it is OK to
+     * split concurrently to cursor operations.
+     */
+    if (WT_BTREE_SYNCING(S2BT(session))) {
         __split_internal_unlock(session, page);
         return (0);
     }