Urllib3 1.11 breaks Elasticsearch

[Koed00]

This is probably specific to Elasticsearch, but upgrading to Urllib3 1.11 causes the following error:

elasticsearch.exceptions.ConnectionError:
ConnectionError(('Connection aborted.', ResponseNotReady())) caused by:
 ProtocolError(('Connection aborted.', ResponseNotReady()))

and occasionally:

ConnectionError('module' object has no attribute 'HTTPMessage') caused by:
 AttributeError('module' object has no attribute 'HTTPMessage')

raised by

/lib/python2.7/site-packages/elasticsearch/helpers/__init__.py", line 124, in streaming_bulk

Downgrading to urllib3 1.10 solves this.
I will have a look upstream as well.

[acdha]

Looks like this is already being tracked upstream: elastic/elasticsearch-py#253

[Koed00]

Turns out having either pies or future<=0.14.3 installed will break urllib3==1.11.
Upgrading to the latest future==0.15.0 fixes this and they're working on a fix for pies.