diff --git a/tempest/api/data_processing/base.py b/tempest/api/data_processing/base.py
index ab882cd..5b272ef 100644
--- a/tempest/api/data_processing/base.py
+++ b/tempest/api/data_processing/base.py
@@ -63,7 +63,7 @@
             except Exception:
                 # ignore errors while auto removing created resource
                 pass
-
+        cls.clear_isolated_creds()
         super(BaseDataProcessingTest, cls).tearDownClass()
 
     @classmethod