Import wiredtiger: e7d742daa2d2500cd94a7061f754a1d0c4aa963c from branch mongodb-4.2

ref: 9ee7cc6956..e7d742daa2
for: 4.1.4

WT-3995       Enhance timestamp abort to accept more number of threads
WT-4164       Ensure test/format configures a reasonably sized cache
WT-4224       Add statistics for prepared transactions
WT-4315       In rollback_to_stable, only check timestamp order if enforced
WT-4328       Use an internal session handle for schema operations in a txn
WT-4342       Set session max on all configuration strings in timestamp_abort test
WT-4347       Limit the threads spawned by timestamp_abort with default config
WT-4348       Create all tables before spawning threads in random_directio test

1 files changed, 3 insertions, 0 deletions

diff --git a/src/third_party/wiredtiger/src/include/stat.h b/src/third_party/wiredtiger/src/include/stat.h
index 1ae4e56be03..6407b5fabfe 100644
--- a/src/third_party/wiredtiger/src/include/stat.h
+++ b/src/third_party/wiredtiger/src/include/stat.h
@@ -624,6 +624,9 @@ struct __wt_connection_stats {
 	int64_t page_sleep;
 	int64_t page_del_rollback_blocked;
 	int64_t child_modify_blocked_page;
+	int64_t txn_prepared_updates_count;
+	int64_t txn_prepared_updates_lookaside_inserts;
+	int64_t txn_prepared_updates_resolved;
 	int64_t txn_commit_queue_walked;
 	int64_t txn_commit_queue_empty;
 	int64_t txn_commit_queue_head;