diff --git a/CHANGELOG-2.1.md b/CHANGELOG-2.1.md
new file mode 100644
index 0000000..f4373e7
--- /dev/null
+++ b/CHANGELOG-2.1.md
@@ -0,0 +1,18 @@
+CHANGELOG for 2.1.x
+===================
+
+This changelog references the relevant changes (bug and security fixes) done
+in 2.1 minor versions.
+
+To get the diff for a specific change, go to
+https://github.com/FriendsOfSymfony/FOSElasticaBundle/commit/XXX where XXX is
+the commit hash. To get the diff between two versions, go to
+https://github.com/FriendsOfSymfony/FOSElasticaBundle/compare/v2.1.0...v2.1.1
+
+To generate a changelog summary since the last version, run
+`git log --no-merges --oneline v2.1.0...2.1.x`
+
+* 2.1.0 (2013-5-15)
+
+ * c05e0ca: Added documentation for ignoring missing hits
+ * 00b67fd: Ignore missing index hits
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 966f04f..f79eece 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -177,6 +177,7 @@ class Configuration implements ConfigurationInterface
                                                 ->addDefaultsIfNotSet()
                                                 ->children()
                                                     ->scalarNode('hydrate')->defaultTrue()->end()
+                                                    ->scalarNode('ignore_missing')->defaultFalse()->end()
                                                     ->scalarNode('service')->end()
                                                 ->end()
                                             ->end()
@@ -267,6 +268,7 @@ class Configuration implements ConfigurationInterface
                                 ->addDefaultsIfNotSet()
                                 ->children()
                                     ->scalarNode('hydrate')->defaultTrue()->end()
+                                    ->scalarNode('ignore_missing')->defaultFalse()->end()
                                     ->scalarNode('service')->end()
                                 ->end()
                             ->end()
diff --git a/DependencyInjection/FOSElasticaExtension.php b/DependencyInjection/FOSElasticaExtension.php
index 3f757df..473cec3 100644
--- a/DependencyInjection/FOSElasticaExtension.php
+++ b/DependencyInjection/FOSElasticaExtension.php
@@ -290,8 +290,9 @@ class FOSElasticaExtension extends Extension
 
         $serviceDef->replaceArgument($argPos, $typeConfig['model']);
         $serviceDef->replaceArgument($argPos + 1, array(
-            'identifier'    => $typeConfig['identifier'],
-            'hydrate'       => $typeConfig['elastica_to_model_transformer']['hydrate']
+            'hydrate'        => $typeConfig['elastica_to_model_transformer']['hydrate'],
+            'identifier'     => $typeConfig['identifier'],
+            'ignore_missing' => $typeConfig['elastica_to_model_transformer']['ignore_missing']
         ));
         $container->setDefinition($serviceId, $serviceDef);
 
diff --git a/Doctrine/AbstractElasticaToModelTransformer.php b/Doctrine/AbstractElasticaToModelTransformer.php
index f796eec..e8f9472 100755
--- a/Doctrine/AbstractElasticaToModelTransformer.php
+++ b/Doctrine/AbstractElasticaToModelTransformer.php
@@ -32,8 +32,9 @@ abstract class AbstractElasticaToModelTransformer implements ElasticaToModelTran
      * @var array
      */
     protected $options = array(
-        'hydrate'    => true,
-        'identifier' => 'id'
+        'hydrate'        => true,
+        'identifier'     => 'id',
+        'ignore_missing' => false,
     );
 
     /**
@@ -94,7 +95,7 @@ abstract class AbstractElasticaToModelTransformer implements ElasticaToModelTran
         }
 
         $objects = $this->findByIdentifiers($ids, $this->options['hydrate']);
-        if (count($objects) < count($elasticaObjects)) {
+        if (!$this->options['ignore_missing'] && count($objects) < count($elasticaObjects)) {
             throw new \RuntimeException('Cannot find corresponding Doctrine objects for all Elastica results.');
         };
 
diff --git a/README.md b/README.md
index 822cf3f..555f5b1 100644
--- a/README.md
+++ b/README.md
@@ -602,6 +602,23 @@ The delete listener disregards the callback_class.
 
 > **Propel** doesn't support this feature yet.
 
+### Ignoring missing index results
+
+By default, FOSElasticaBundle will throw an exception if the results returned from
+Elasticsearch are different from the results it finds from the chosen persistence
+provider. This may pose problems for a large index where updates do not occur instantly
+or another process has removed the results from your persistence provider without
+updating Elasticsearch.
+
+The error you're likely to see is something like:
+'Cannot find corresponding Doctrine objects for all Elastica results.'
+
+To solve this issue, each mapped object can be configured to ignore the missing results:
+
+                        persistence:
+                            elastica_to_model_transformer:
+                                ignore_missing: true
+
 ### Advanced elasticsearch configuration
 
 Any setting can be specified when declaring a type. For example, to enable a custom analyzer, you could write: