ACP2E-2494: Performance issue when loading product attributes in cart rules

- implemented CR

Author: aplapana

app/code/Magento/SalesRule/Model/ResourceModel/Rule.php

@@ -311,7 +311,7 @@ public function getActiveAttributes()
                 ->group('attribute_id');
         $select = $connection->select()->from(
             ['a' => $subSelect],
-            new \Zend_Db_Expr('DISTINCT ea.attribute_code')
+            new \Zend_Db_Expr('ea.attribute_code')
         )->joinInner(
             ['ea' => $this->getTable('eav_attribute')],
             'ea.attribute_id = a.attribute_id',

dev/tests/integration/testsuite/Magento/SalesRule/Model/ResourceModel/RuleTest.php

@@ -72,7 +72,6 @@ public function testAfterSave()
     public function testGetActiveAttributes()
     {
         $rule = $this->fixtures->get('rule1');
-        $items = $this->resource->getActiveAttributes();
         $rule->setIsActive(1);
         $rule->save();
         $items = $this->resource->getActiveAttributes();