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diff --git a/src/third_party/wiredtiger/test/suite/test_stat04.py b/src/third_party/wiredtiger/test/suite/test_stat04.py
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+++ b/src/third_party/wiredtiger/test/suite/test_stat04.py
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+#!/usr/bin/env python
+#
+# Public Domain 2014-2015 MongoDB, Inc.
+# Public Domain 2008-2014 WiredTiger, Inc.
+#
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+import os, struct
+from suite_subprocess import suite_subprocess
+from wtscenario import number_scenarios, multiply_scenarios
+import wiredtiger, wttest
+from wiredtiger import stat
+
+# test_stat04.py
+#    Statistics key/value pair count
+class test_stat04(wttest.WiredTigerTestCase, suite_subprocess):
+    uripfx = 'table:test_stat04.'
+
+    # Note: stats for fixed length bit fields (valuefmt='8t')
+    # do not include accurate counts for kv pairs.
+    keyfmt = [
+        ('col', dict(keyfmt='r', valuefmt='S', storekind='col')),
+        ('row', dict(keyfmt='S', valuefmt='S', storekind='row')),
+    ]
+    nentries = [
+        ('small', dict(nentries=100, valuesize=50)),
+        ('medium', dict(nentries=10000, valuesize=20)),
+        ('large', dict(nentries=100000, valuesize=1)),
+        ('jumboval', dict(nentries=100, valuesize=4200000)),
+    ]
+    scenarios = number_scenarios(multiply_scenarios('.', keyfmt, nentries))
+
+    # Override WiredTigerTestCase
+    def setUpConnectionOpen(self, dir):
+        return wiredtiger.wiredtiger_open(dir,
+            'create,' +
+            'statistics=(all),' +
+            'error_prefix="%s: "' % self.shortid())
+
+    def init_test(self):
+        self.valuepfx = self.valuesize * 'X'
+
+    def genkey(self, n):
+        if self.keyfmt == 'S':
+            return 'SOMEKEY' + str(n)
+        else:
+            return n + 1
+
+    def genvalue(self, n):
+        if self.valuefmt == 'S':
+            return self.valuepfx + str(n)
+        else:
+            return n & 0xff
+
+    def checkcount(self, uri, expectpairs):
+        statcursor = self.session.open_cursor(
+            'statistics:' + uri, None, 'statistics=(all,clear)')
+        self.assertEqual(statcursor[stat.dsrc.btree_entries][2], expectpairs)
+        statcursor.close()
+
+    def test_stat_nentries(self):
+        """
+        Test to make sure the number of key/value pairs is accurate.
+        """
+
+        self.init_test()
+        uri = self.uripfx + self.storekind + '.' + str(self.nentries)
+        self.session.create(uri, 'key_format=' + self.keyfmt +
+                            ',value_format=' + self.valuefmt)
+        cursor = self.session.open_cursor(uri, None, None)
+
+        count = 0
+        # Insert entries, periodically checking that stats match.
+        for i in range(0, self.nentries):
+            if count % 50 == 0:
+                self.checkcount(uri, count)
+            cursor[self.genkey(i)] = self.genvalue(i)
+            count += 1
+        # Remove a number of entries, at each step checking that stats match.
+        for i in range(0, self.nentries / 37):
+            cursor.set_key(self.genkey(i*11 % self.nentries))
+            if cursor.remove() == 0:
+                count -= 1
+            self.checkcount(uri, count)
+        cursor.close()
+
+if __name__ == '__main__':
+    wttest.run()