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, 3 insertions, 4 deletions

diff --git a/src/third_party/wiredtiger/test/suite/test_async03.py b/src/third_party/wiredtiger/test/suite/test_async03.py
index 98851885f70..4859360924a 100644
--- a/src/third_party/wiredtiger/test/suite/test_async03.py
+++ b/src/third_party/wiredtiger/test/suite/test_async03.py
@@ -54,12 +54,11 @@ class test_async03(wttest.WiredTigerTestCase):
         tablearg = 'table:' + self.table_name1
         self.session.create(tablearg, 'key_format=S,value_format=S')
 
-        # Populate table with async inserts, callback checks
-        # to ensure key/value is correct.
         callback = Callback()
 
-        self.assertRaises(wiredtiger.WiredTigerError,
-            lambda: self.conn.async_new_op(tablearg, None, callback))
+        msg = '/Asynchronous operations not configured/'
+        self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
+            lambda: self.conn.async_new_op(tablearg, None, callback), msg)
 
         self.conn.async_flush()