MAGETWO-39778: Reindex by cron cannot finish: "Area code not set"

- fixed init of object manager in cron:run command

Author: Olga Kopylova

app/code/Magento/Cron/Console/Command/CronCommand.php

@@ -29,11 +29,11 @@ class CronCommand extends Command
     const INPUT_KEY_GROUP = 'group';
 
     /**
-     * Object Manager
+     * Object manager factory
      *
-     * @var ObjectManagerInterface
+     * @var ObjectManagerFactory
      */
-    protected $objectManager;
+    private $objectManagerFactory;
 
     /**
      * Constructor
@@ -42,10 +42,7 @@ class CronCommand extends Command
      */
     public function __construct(ObjectManagerFactory $objectManagerFactory)
     {
-        $params = $_SERVER;
-        $params[StoreManager::PARAM_RUN_CODE] = 'admin';
-        $params[Store::CUSTOM_ENTRY_POINT_PARAM] = true;
-        $this->objectManager = $objectManagerFactory->create($params);
+        $this->objectManagerFactory = $objectManagerFactory;
         parent::__construct();
     }
 
@@ -80,6 +77,11 @@ protected function configure()
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
+        $omParams = $_SERVER;
+        $omParams[StoreManager::PARAM_RUN_CODE] = 'admin';
+        $omParams[Store::CUSTOM_ENTRY_POINT_PARAM] = true;
+        $objectManager = $this->objectManagerFactory->create($omParams);
+
         $params[self::INPUT_KEY_GROUP] = $input->getOption(self::INPUT_KEY_GROUP);
         $params[Observer::STANDALONE_PROCESS_STARTED] = '0';
         $bootstrap = $input->getOption(Cli::INPUT_KEY_BOOTSTRAP);
@@ -94,7 +96,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             }
         }
         /** @var \Magento\Framework\App\Cron $cronObserver */
-        $cronObserver = $this->objectManager->create('Magento\Framework\App\Cron', ['parameters' => $params]);
+        $cronObserver = $objectManager->create('Magento\Framework\App\Cron', ['parameters' => $params]);
         $cronObserver->launch();
         $output->writeln('<info>' . 'Ran jobs by schedule.' . '</info>');
     }

app/code/Magento/Cron/Model/Observer.php

@@ -182,6 +182,7 @@ public function dispatch($observer)
                     }
                 } catch (\Exception $e) {
                     $schedule->setMessages($e->getMessage());
+                    $schedule->setStatus(Schedule::STATUS_ERROR);
                 }
                 $schedule->save();
             }