Import wiredtiger: b09743bdf8073e3bc9bbf5a67bc0d5c855188afa from branch mongodb-5.0

ref: c7cea9c71f..b09743bdf8
for: 5.0.16

WT-10062 Fix checkpoint cleanup not to skip internal pages

2 files changed, 18 insertions, 4 deletions

diff --git a/src/third_party/wiredtiger/import.data b/src/third_party/wiredtiger/import.data
index cc2630c0017..d83d3baab39 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": "c7cea9c71fc7cab71c2bd16e874b3d0cd2e89123"
+    "commit": "b09743bdf8073e3bc9bbf5a67bc0d5c855188afa"
 }
diff --git a/src/third_party/wiredtiger/src/btree/bt_sync.c b/src/third_party/wiredtiger/src/btree/bt_sync.c
index 7a0481aacdf..2236774fc8d 100644
--- a/src/third_party/wiredtiger/src/btree/bt_sync.c
+++ b/src/third_party/wiredtiger/src/btree/bt_sync.c
@@ -409,10 +409,24 @@ __sync_page_skip(WT_SESSION_IMPL *session, WT_REF *ref, void *context, bool *ski
         return (0);
 
     /*
-     * Skip reading the pages that are normal leaf pages or don't have an aggregated durable stop
-     * timestamp.
+     * The checkpoint cleanup fast deletes the obsolete leaf page by marking it as deleted
+     * in the internal page. To achieve this,
+     *
+     * 1. Checkpoint has to read all the internal pages that have obsolete leaf pages.
+     *    To limit the reading of number of internal pages, the aggregated stop durable timestamp
+     *    is checked except when the table is logged. Logged tables do not use timestamps.
+     *
+     * 2. Obsolete leaf pages with overflow keys/values cannot be fast deleted to free
+     *    the overflow blocks. Read the page into cache and mark it dirty to remove the
+     *    overflow blocks during reconciliation.
+     *
+     * FIXME: Read internal pages from non-logged tables when the remove/truncate
+     * operation is performed using no timestamp.
      */
-    if (addr.type == WT_ADDR_LEAF_NO || addr.ta.newest_stop_durable_ts == WT_TS_NONE) {
+    if (addr.type == WT_ADDR_LEAF_NO ||
+      ((!FLD_ISSET(S2C(session)->log_flags, WT_CONN_LOG_ENABLED) ||
+         F_ISSET(S2BT(session), WT_BTREE_NO_LOGGING)) &&
+        addr.ta.newest_stop_durable_ts == WT_TS_NONE)) {
         __wt_verbose(session, WT_VERB_CHECKPOINT_CLEANUP, "%p: page walk skipped", (void *)ref);
         WT_STAT_CONN_DATA_INCR(session, cc_pages_walk_skipped);
         *skipp = true;