When retrying we get deserialized data

This is just a hotfix until a better solution with proper tests come along

Author: honzakral

elasticsearch/helpers/__init__.py

@@ -92,7 +92,7 @@ def _process_bulk_chunk(client, bulk_actions, bulk_data, raise_on_exception=True
 
  try:
  # send the actual request
- resp = client.bulk('\n'.join(bulk_actions) + '\n', **kwargs)
+ resp = client.bulk('\n'.join(map(client.transport.serializer.dumps, bulk_actions)) + '\n', **kwargs)
  except TransportError as e:
  # default behavior - just propagate exception
  if raise_on_exception: