WT-3447 Fix python test so it will loop checking for WiredTigerTables (#3532)

To give time for the statistics log thread to write into the file, not just create it.

1 files changed, 14 insertions, 9 deletions

diff --git a/test/suite/test_stat_log02.py b/test/suite/test_stat_log02.py
index 322092c8190..e85b64721df 100644
--- a/test/suite/test_stat_log02.py
+++ b/test/suite/test_stat_log02.py
@@ -96,16 +96,21 @@ class test_stat_log02(wttest.WiredTigerTestCase):
             json.loads(line)
 
     def check_file_contains_tables(self, dir):
-        files = glob.glob(dir + '/' + 'WiredTigerStat.[0-9]*')
-        f = open(files[0], 'r')
-        has_tables = False
-        for line in f:
-            data = json.loads(line)
-            if "wiredTigerTables" in data:
-                if "file:foo.wt" in data["wiredTigerTables"]:
-                    has_tables = True
+        # We wait for another 30 sleeps here to avoid erroring in the case where
+        # the stat log has only made the first pass and not yet printed the
+        # individual table stats.
+        number_sleeps = 0
+        while True:
+            files = glob.glob(dir + '/' + 'WiredTigerStat.[0-9]*')
+            f = open(files[0], 'r')
+            for line in f:
+                data = json.loads(line)
+                if "wiredTigerTables" in data:
+                    if "file:foo.wt" in data["wiredTigerTables"]:
+                        return
 
-        self.assertTrue(has_tables)
+            number_sleeps += 1
+            self.assertLess(number_sleeps, 30)
 
 if __name__ == '__main__':
     wttest.run()