gistfile1.txt

diff --git a/haystack/management/commands/clear_index.py b/haystack/management/commands/clear_index.py
index 93b5f91..3c09f78 100644
--- a/haystack/management/commands/clear_index.py
+++ b/haystack/management/commands/clear_index.py
@@ -18,6 +18,9 @@ class Command(BaseCommand):
             help='Update only the named backend (can be used multiple times). '
                  'By default all backends will be updated.'
         ),
+        make_option('--nocommit', action='store_false', dest='commit',
+            default=True, help='Will pass commit=False to the backend.'
+        ),
     )
     option_list = BaseCommand.option_list + base_options
 
@@ -25,6 +28,7 @@ class Command(BaseCommand):
         """Clears out the search index completely."""
         from haystack import connections
         self.verbosity = int(options.get('verbosity', 1))
+        self.commit = options.get('commit', True)
 
         using = options.get('using')
         if not using:
@@ -47,7 +51,7 @@ class Command(BaseCommand):
 
         for backend_name in using:
             backend = connections[backend_name].get_backend()
-            backend.clear()
+            backend.clear(commit=self.commit)
 
         if self.verbosity >= 1:
             print("All documents removed.")
diff --git a/test_haystack/solr_tests/test_management_commands.py b/test_haystack/solr_tests/test_management_commands.py
index 7d5bf95..0a2a8bb 100644
--- a/test_haystack/solr_tests/test_management_commands.py
+++ b/test_haystack/solr_tests/test_management_commands.py
@@ -74,6 +74,9 @@ class ManagementCommandTestCase(TestCase):
         call_command('rebuild_index', interactive=False, verbosity=0, commit=True)
         self.assertEqual(self.solr.search('*:*').hits, 23)
 
+        call_command('clear_index', interactive=False, verbosity=0, commit=False)
+        self.assertEqual(self.solr.search('*:*').hits, 23)
+
     def test_remove(self):
         call_command('clear_index', interactive=False, verbosity=0)
         self.assertEqual(self.solr.search('*:*').hits, 0)