Import wiredtiger: 74430da40c96247c0a0d92f011ccfb2b175f1f32 from branch mongodb-3.4

ref: ef9a7983ea..74430da40c
for: 3.4.0

SERVER-26753  Minor speed regression (13%) and 'choppy' performance in 3.4 vs 3.2
WT-2415       Add option for join cursors to return false positives
WT-2945       Occasional hang running reconfigure fuzz test
WT-2947       test suite populate functions need refactoring
WT-2953       Test format failure - stuck cache with 1/42MB dirty
WT-2961       Add a version drop-down to the web version of the docs
WT-2964       WTPERF parallel-pop-btree hung in populate phase
WT-2968       backup cursor opens every file
WT-2971       Add documentation for raw compression to the WT docs
WT-2975       Reduce the memory allocated for statistics
WT-2991       Coverity issue 1365198
WT-2998       Add error messages to error returns that might be confusing.
WT-2999       Memory leak in join WT_CURSOR with custom extractor
WT-3001       WT_EXTENSION_API references are named inconsistently.
WT-3003       log generation should not auto generate the record and op types
WT-3005       Add top-level .gitignore file.
WT-3007       Remove duplicated word in comment
WT-3008       Run wtperf stress testing against all maintained branches
WT-3009       Test format hung/aborted with small cache (sub 10mB)

1 files changed, 2 insertions, 1 deletions

diff --git a/src/third_party/wiredtiger/src/schema/schema_drop.c b/src/third_party/wiredtiger/src/schema/schema_drop.c
index ead8cc45c62..65c955cf1e9 100644
--- a/src/third_party/wiredtiger/src/schema/schema_drop.c
+++ b/src/third_party/wiredtiger/src/schema/schema_drop.c
@@ -26,8 +26,9 @@ __drop_file(
 
 	filename = uri;
 	if (!WT_PREFIX_SKIP(filename, "file:"))
-		return (EINVAL);
+		return (__wt_unexpected_object_type(session, uri, "file:"));
 
+	WT_RET(__wt_schema_backup_check(session, filename));
 	/* Close all btree handles associated with this file. */
 	WT_WITH_HANDLE_LIST_LOCK(session,
 	    ret = __wt_conn_dhandle_close_all(session, uri, force));