MAGETWO-65133: Integrate the batch algorithm to Stock indexer

Author: irenelagno

app/code/Magento/CatalogInventory/Model/Indexer/Stock/Action/Full.php

@@ -142,11 +142,12 @@ public function execute($ids = null)
                     $select->where('type_id = ?', $indexer->getTypeId());
 
                     $entityIds = $this->batchProvider->getBatchIds($connection, $select, $batch);
-                    $indexer->reindexEntity($entityIds);
-
-                    $select = $connection->select()->from($this->_getIdxTable(), $columns);
-                    $query = $select->insertFromSelect($tableName, $columns);
-                    $connection->query($query);
+                    if (!empty($entityIds)) {
+                        $indexer->reindexEntity($entityIds);
+                        $select = $connection->select()->from($this->_getIdxTable(), $columns);
+                        $query = $select->insertFromSelect($tableName, $columns);
+                        $connection->query($query);
+                    }
                 }
             }
         } catch (\Exception $e) {

app/code/Magento/CatalogInventory/Setup/UpgradeSchema.php

@@ -27,9 +27,11 @@ public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $con
 
         if (version_compare($context->getVersion(), $this->productCompositeKeyVersion, '<')) {
             $this->upgradeProductCompositeKey($setup);
-            $this->addReplicaTable($setup, 'cataloginventory_stock_status', 'cataloginventory_stock_status_replica');
         }
 
+        if (version_compare($context->getVersion(), '2.3.0', '<')) {
+            $this->addReplicaTable($setup, 'cataloginventory_stock_status', 'cataloginventory_stock_status_replica');
+        }
         $setup->endSetup();
     }
 

app/code/Magento/CatalogInventory/etc/module.xml

@@ -6,7 +6,7 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="Magento_CatalogInventory" setup_version="2.2.1">
+    <module name="Magento_CatalogInventory" setup_version="2.3.0">
         <sequence>
             <module name="Magento_Catalog"/>
         </sequence>