diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
index 561abee..c779dd2 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
@@ -58,7 +58,7 @@ class Schema extends DatabaseSchema {
    * @return
    *   The index/constraint/pkey identifier
    */
-  protected function ensureIdentifiersLength($identifier) {
+  protected function hashIdentifierLength($identifier) {
     $args = func_get_args();
     $info = $this->getPrefixInfo($identifier);
     $args[0] = $info['table'];
@@ -222,11 +222,11 @@ protected function createTableSql($name, $table) {
 
     $sql_keys = array();
     if (isset($table['primary key']) && is_array($table['primary key'])) {
-      $sql_keys[] = 'CONSTRAINT ' . $this->ensureIdentifiersLength($name, '', 'pkey') . ' PRIMARY KEY (' . $this->createPrimaryKeySql($table['primary key']) . ')';
+      $sql_keys[] = 'CONSTRAINT ' . $this->hashIdentifierLength($name, '', 'pkey') . ' PRIMARY KEY (' . $this->createPrimaryKeySql($table['primary key']) . ')';
     }
     if (isset($table['unique keys']) && is_array($table['unique keys'])) {
       foreach ($table['unique keys'] as $key_name => $key) {
-        $sql_keys[] = 'CONSTRAINT ' . $this->ensureIdentifiersLength($name, $key_name, 'key') . ' UNIQUE (' . implode(', ', $key) . ')';
+        $sql_keys[] = 'CONSTRAINT ' . $this->hashIdentifierLength($name, $key_name, 'key') . ' UNIQUE (' . implode(', ', $key) . ')';
       }
     }
 
@@ -462,7 +462,7 @@ function renameTable($table, $new_name) {
       // Get the index type by suffix, e.g. idx/key/pkey
       $index_type = substr($index->indexname, strrpos($index->indexname, '_') + 1);
 
-      // If the index is already rewritten by ensureIdentifiersLength() to not
+      // If the index is already rewritten by hashIdentifierLength() to not
       // exceed the 63 chars limit of PostgreSQL, we need to take care of that.
       // Example (drupal_Gk7Su_T1jcBHVuvSPeP22_I3Ni4GrVEgTYlIYnBJkro_idx).
       if (strpos($index->indexname, 'drupal_') !== FALSE) {
@@ -471,12 +471,12 @@ function renameTable($table, $new_name) {
       }
       else {
         // Make sure to remove the suffix from index names, because
-        // $this->ensureIdentifiersLength() will add the suffix again and thus
+        // $this->hashIdentifierLength() will add the suffix again and thus
         // would result in a wrong index name.
         preg_match('/^' . preg_quote($old_full_name) . '__(.*)__' . preg_quote($index_type) . '/', $index->indexname, $matches);
         $index_name = $matches[1];
       }
-      $this->connection->query('ALTER INDEX "' . $index->indexname . '" RENAME TO ' . $this->ensureIdentifiersLength($new_name, $index_name, $index_type) . '');
+      $this->connection->query('ALTER INDEX "' . $index->indexname . '" RENAME TO ' . $this->hashIdentifierLength($new_name, $index_name, $index_type) . '');
     }
 
     // Ensure the new table name does not include schema syntax.
@@ -570,7 +570,7 @@ public function fieldSetNoDefault($table, $field) {
 
   public function indexExists($table, $name) {
     // Details http://www.postgresql.org/docs/8.3/interactive/view-pg-indexes.html
-    $index_name = $this->ensureIdentifiersLength($table, $name, 'idx');
+    $index_name = $this->hashIdentifierLength($table, $name, 'idx');
     // Remove leading and trailing quotes because the index name is in a WHERE
     // clause and not used as an identifier.
     $index_name = str_replace('"', '', $index_name);
@@ -586,7 +586,7 @@ public function indexExists($table, $name) {
    *   The name of the constraint (typically 'pkey' or '[constraint]_key').
    */
   public function constraintExists($table, $name) {
-    $constraint_name = $this->ensureIdentifiersLength($table, $name);
+    $constraint_name = $this->hashIdentifierLength($table, $name);
     // Remove leading and trailing quotes because the index name is in a WHERE
     // clause and not used as an identifier.
     $constraint_name = str_replace('"', '', $constraint_name);
@@ -601,7 +601,7 @@ public function addPrimaryKey($table, $fields) {
       throw new SchemaObjectExistsException(t("Cannot add primary key to table @table: primary key already exists.", array('@table' => $table)));
     }
 
-    $this->connection->query('ALTER TABLE {' . $table . '} ADD CONSTRAINT ' . $this->ensureIdentifiersLength($table, '', 'pkey') . ' PRIMARY KEY (' . $this->createPrimaryKeySql($fields) . ')');
+    $this->connection->query('ALTER TABLE {' . $table . '} ADD CONSTRAINT ' . $this->hashIdentifierLength($table, '', 'pkey') . ' PRIMARY KEY (' . $this->createPrimaryKeySql($fields) . ')');
     $this->resetTableInformation($table);
   }
 
@@ -610,7 +610,7 @@ public function dropPrimaryKey($table) {
       return FALSE;
     }
 
-    $this->connection->query('ALTER TABLE {' . $table . '} DROP CONSTRAINT ' . $this->ensureIdentifiersLength($table, '', 'pkey'));
+    $this->connection->query('ALTER TABLE {' . $table . '} DROP CONSTRAINT ' . $this->hashIdentifierLength($table, '', 'pkey'));
     $this->resetTableInformation($table);
     return TRUE;
   }
@@ -623,7 +623,7 @@ function addUniqueKey($table, $name, $fields) {
       throw new SchemaObjectExistsException(t("Cannot add unique key @name to table @table: unique key already exists.", array('@table' => $table, '@name' => $name)));
     }
 
-    $this->connection->query('ALTER TABLE {' . $table . '} ADD CONSTRAINT ' . $this->ensureIdentifiersLength($table, $name, 'key') . ' UNIQUE (' . implode(',', $fields) . ')');
+    $this->connection->query('ALTER TABLE {' . $table . '} ADD CONSTRAINT ' . $this->hashIdentifierLength($table, $name, 'key') . ' UNIQUE (' . implode(',', $fields) . ')');
     $this->resetTableInformation($table);
   }
 
@@ -632,7 +632,7 @@ public function dropUniqueKey($table, $name) {
       return FALSE;
     }
 
-    $this->connection->query('ALTER TABLE {' . $table . '} DROP CONSTRAINT ' . $this->ensureIdentifiersLength($table, $name, 'key'));
+    $this->connection->query('ALTER TABLE {' . $table . '} DROP CONSTRAINT ' . $this->hashIdentifierLength($table, $name, 'key'));
     $this->resetTableInformation($table);
     return TRUE;
   }
@@ -654,7 +654,7 @@ public function dropIndex($table, $name) {
       return FALSE;
     }
 
-    $this->connection->query('DROP INDEX ' . $this->ensureIdentifiersLength($table, $name, 'idx'));
+    $this->connection->query('DROP INDEX ' . $this->hashIdentifierLength($table, $name, 'idx'));
     $this->resetTableInformation($table);
     return TRUE;
   }
@@ -763,7 +763,7 @@ public function changeField($table, $field, $field_new, $spec, $new_keys = array
   }
 
   protected function _createIndexSql($table, $name, $fields) {
-    $query = 'CREATE INDEX ' . $this->ensureIdentifiersLength($table, $name, 'idx') . ' ON {' . $table . '} (';
+    $query = 'CREATE INDEX ' . $this->hashIdentifierLength($table, $name, 'idx') . ' ON {' . $table . '} (';
     $query .= $this->_createKeySql($fields) . ')';
     return $query;
   }