From e32bfe3db7186612842b01bbaac4ba3ddc47bd2d Mon Sep 17 00:00:00 2001
From: Arik Fraimovich <arik@arikfr.com>
Date: Wed, 4 May 2016 10:40:53 +0300
Subject: [PATCH] Hive: close connection only if it exists

---
 redash/query_runner/hive_ds.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/redash/query_runner/hive_ds.py b/redash/query_runner/hive_ds.py
index e167f6f5e..f7027c1d5 100644
--- a/redash/query_runner/hive_ds.py
+++ b/redash/query_runner/hive_ds.py
@@ -124,7 +124,8 @@ class Hive(BaseSQLQueryRunner):
             logging.exception(e)
             raise sys.exc_info()[1], None, sys.exc_info()[2]
         finally:
-            connection.close()
+            if connection:
+                connection.close()
 
         return json_data, error