Wrap indexation in a transaction.

mayan/apps/document_indexing/managers.py

@@ -2,7 +2,7 @@ from __future__ import unicode_literals
 
 import logging
 
-from django.db import models
+from django.db import models, transaction
 from django.utils.translation import ugettext_lazy as _
 
 from documents.models import Document
@@ -75,6 +75,7 @@ class IndexInstanceNodeManager(models.Manager):
 
         from .models import Index
 
+        with transaction.atomic():
             self.remove_document(document)
 
             # Only update indexes where the document type is found