From 95538edb41bcbb673073990d11a62b2e9ea7d731 Mon Sep 17 00:00:00 2001
From: Drew Banin <drew@fishtownanalytics.com>
Date: Fri, 19 May 2017 00:09:00 -0400
Subject: [PATCH] fix for commit/transaction error

Tried to commit transaction on connection "{model}", but it does not have one open!
---
 dbt/adapters/redshift.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dbt/adapters/redshift.py b/dbt/adapters/redshift.py
index 2f9e52385d5..185fd5dfc63 100644
--- a/dbt/adapters/redshift.py
+++ b/dbt/adapters/redshift.py
@@ -60,7 +60,9 @@ def drop(cls, profile, relation, relation_type, model_name=None):
 
             connection = cls.get_connection(profile, model_name)
 
-            cls.commit(connection)
+            if connection.get('transaction_open'):
+                cls.commit(connection)
+
             cls.begin(profile, connection.get('name'))
 
             to_return = super(PostgresAdapter, cls).drop(