Import wiredtiger: 357d565eee34b54c7725a0c6f7fb65c1dffa26d1 from branch mongodb-4.4

ref: 1fcb0f1e1d..357d565eee
for: 4.4.4

WT-4625       Add a check for camelCase names
WT-5101       Make Clang Format recognise remaining loop macros
WT-6313       Added verify_metadata configuration to the exclusion list when writing to basecfg
WT-6568       Fix split generation use
WT-6677       Map read committed/uncommitted isolation to read-only transaction
WT-6710       Change the default transaction isolation to snapshot
WT-6711       Add new API WT_SESSION.reset_snapshot to update the snapshot
WT-6802       Don't set operation timer for internal and reentry api calls
WT-6848       Split the program into test and framework components
WT-6888       WTPERF reports incorrect upper bound item count during populate
WT-6969       Do not update the existing snapshot for autocommit transactions
WT-6990       New cursor debug configuration isn't considered in __wt_cursor_cache_get
WT-6996       Fix suite_random.rand32() in python test suite
WT-7027       Run the metadata checkpoint for force_stop at read-committed isolation for incremental backup

2 files changed, 11 insertions, 1 deletions

diff --git a/src/third_party/wiredtiger/src/cursor/cur_backup.c b/src/third_party/wiredtiger/src/cursor/cur_backup.c
index a32b5ddf974..6a03b7ea5b3 100644
--- a/src/third_party/wiredtiger/src/cursor/cur_backup.c
+++ b/src/third_party/wiredtiger/src/cursor/cur_backup.c
@@ -211,8 +211,14 @@ err:
          */
         cfg[0] = WT_CONFIG_BASE(session, WT_SESSION_checkpoint);
         cfg[1] = "force=true";
+        /*
+         * Metadata checkpoints rely on read-committed isolation. Use that here no matter what
+         * isolation the caller's session sets for isolation.
+         */
         WT_WITH_DHANDLE(session, WT_SESSION_META_DHANDLE(session),
-          WT_WITH_METADATA_LOCK(session, ret = __wt_checkpoint(session, cfg)));
+          WT_WITH_METADATA_LOCK(session,
+            WT_WITH_TXN_ISOLATION(
+              session, WT_ISO_READ_COMMITTED, ret = __wt_checkpoint(session, cfg))));
     }
 
     /*
diff --git a/src/third_party/wiredtiger/src/cursor/cur_std.c b/src/third_party/wiredtiger/src/cursor/cur_std.c
index 92b8e5c5b3e..c34d736b594 100644
--- a/src/third_party/wiredtiger/src/cursor/cur_std.c
+++ b/src/third_party/wiredtiger/src/cursor/cur_std.c
@@ -798,6 +798,10 @@ __wt_cursor_cache_get(WT_SESSION_IMPL *session, const char *uri, WT_CURSOR *to_d
         if (cval.val)
             return (WT_NOTFOUND);
 
+        WT_RET(__wt_config_gets_def(session, cfg, "debug", 0, &cval));
+        if (cval.len != 0)
+            return (WT_NOTFOUND);
+
         WT_RET(__wt_config_gets_def(session, cfg, "dump", 0, &cval));
         if (cval.len != 0)
             return (WT_NOTFOUND);