Setting adjust_database_uri for HiveEngineSpec (#2636)

* Setting adjust_database_uri for HiveEngineSpec

* fix tests

superset/db_engine_specs.py

@@ -650,6 +650,12 @@ def fetch_result_sets(cls, db, datasource_type, force=False):
         return BaseEngineSpec.fetch_result_sets(
             db, datasource_type, force=force)
 
+    @classmethod
+    def adjust_database_uri(cls, uri, selected_schema=None):
+        if selected_schema:
+            uri.database = selected_schema
+        return uri
+
     @classmethod
     def progress(cls, logs):
         # 17/02/07 19:36:38 INFO ql.Driver: Total jobs = 5

tests/model_tests.py

@@ -37,13 +37,13 @@ def test_database_schema_postgres(self):
         self.assertEquals('prod', db)
 
     def test_database_schema_hive(self):
-        sqlalchemy_uri = 'hive://hive@hive.airbnb.io:10000/hive/default'
+        sqlalchemy_uri = 'hive://hive@hive.airbnb.io:10000/default?auth=NOSASL'
         model = Database(sqlalchemy_uri=sqlalchemy_uri)
         db = make_url(model.get_sqla_engine().url).database
-        self.assertEquals('hive/default', db)
+        self.assertEquals('default', db)
 
         db = make_url(model.get_sqla_engine(schema='core_db').url).database
-        self.assertEquals('hive/core_db', db)
+        self.assertEquals('core_db', db)
 
     def test_database_schema_mysql(self):
         sqlalchemy_uri = 'mysql://root@localhost/superset'