From 755978397a8d0bacbfe81f7240b1e3ff3b9b23af Mon Sep 17 00:00:00 2001
From: Amit Bera <dev.amitbera@gmail.com>
Date: Sun, 7 Jan 2018 12:17:58 +0530
Subject: [PATCH 1/3] Newsletter Model Subcriber LoadByEmail does not - Use
 MYSQL index - Add an Mysql Index key via upgrade Schema - files  add  at
 app/code/Magento/Newsletter/Setup/UpgradeScheme.php - Modified at
 app/code/Magento/Newsletter/etc/module.xml

---
 .../Newsletter/Setup/UpgradeSchema.php        | 37 +++++++++++++++++++
 app/code/Magento/Newsletter/etc/module.xml    |  2 +-
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 app/code/Magento/Newsletter/Setup/UpgradeSchema.php

diff --git a/app/code/Magento/Newsletter/Setup/UpgradeSchema.php b/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
new file mode 100644
index 0000000000000..4edd5f4ac9b8a
--- /dev/null
+++ b/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
@@ -0,0 +1,37 @@
+<?php
+namespace Magento\Newsletter\Setup;
+
+
+use Magento\Framework\Setup\ModuleContextInterface;
+use Magento\Framework\Setup\SchemaSetupInterface;
+use Magento\Framework\Setup\UpgradeSchemaInterface;
+/**
+ * Upgrade the Newsletter module DB scheme
+ */
+class UpgradeSchema implements  UpgradeSchemaInterface
+{
+
+    /**
+     * Upgrades DB schema for a module
+     *
+     * @param SchemaSetupInterface $setup
+     * @param ModuleContextInterface $context
+     * @return void
+     */
+    public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $context)
+    {
+        $setup->startSetup();
+
+        if (version_compare($context->getVersion(), '2.0.1', '<')) {
+            $connection = $setup->getConnection();
+
+            $connection->addIndex(
+                $setup->getTable('newsletter_subscriber'),
+                $setup->getIdxName('newsletter_subscriber', ['subscriber_email']),
+                ['subscriber_email']
+            );
+        }
+
+        $setup->endSetup();
+    }
+}
\ No newline at end of file
diff --git a/app/code/Magento/Newsletter/etc/module.xml b/app/code/Magento/Newsletter/etc/module.xml
index f338445225222..5da16a9a3e9ba 100644
--- a/app/code/Magento/Newsletter/etc/module.xml
+++ b/app/code/Magento/Newsletter/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_Newsletter" setup_version="2.0.0">
+    <module name="Magento_Newsletter" setup_version="2.0.1">
         <sequence>
             <module name="Magento_Store"/>
             <module name="Magento_Customer"/>

From b85349745c4a593306edf61dae2235cd96a0fcd2 Mon Sep 17 00:00:00 2001
From: Amit Bera <dev.amitbera@gmail.com>
Date: Sun, 7 Jan 2018 13:47:14 +0530
Subject: [PATCH 2/3] Fixing the  code style issue. #12787

---
 .../Magento/Newsletter/Setup/UpgradeSchema.php    | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/app/code/Magento/Newsletter/Setup/UpgradeSchema.php b/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
index 4edd5f4ac9b8a..783d8dcc80447 100644
--- a/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
+++ b/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
@@ -1,22 +1,21 @@
 <?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
 namespace Magento\Newsletter\Setup;
 
-
 use Magento\Framework\Setup\ModuleContextInterface;
 use Magento\Framework\Setup\SchemaSetupInterface;
 use Magento\Framework\Setup\UpgradeSchemaInterface;
+
 /**
  * Upgrade the Newsletter module DB scheme
  */
 class UpgradeSchema implements  UpgradeSchemaInterface
 {
-
     /**
-     * Upgrades DB schema for a module
-     *
-     * @param SchemaSetupInterface $setup
-     * @param ModuleContextInterface $context
-     * @return void
+     * {@inheritdoc}
      */
     public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $context)
     {
@@ -34,4 +33,4 @@ public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $con
 
         $setup->endSetup();
     }
-}
\ No newline at end of file
+}

From be8b258b6a7ff406f099619c917e2001731f1157 Mon Sep 17 00:00:00 2001
From: David Manners <dmanners87@gmail.com>
Date: Sun, 7 Jan 2018 14:11:50 +0530
Subject: [PATCH 3/3] Remove extra white-space from before the
 UpgradeSchemaInterface

---
 app/code/Magento/Newsletter/Setup/UpgradeSchema.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/Magento/Newsletter/Setup/UpgradeSchema.php b/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
index 783d8dcc80447..e7ce898de83a3 100644
--- a/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
+++ b/app/code/Magento/Newsletter/Setup/UpgradeSchema.php
@@ -12,7 +12,7 @@
 /**
  * Upgrade the Newsletter module DB scheme
  */
-class UpgradeSchema implements  UpgradeSchemaInterface
+class UpgradeSchema implements UpgradeSchemaInterface
 {
     /**
      * {@inheritdoc}