lepenr commented on issue #4932: Running Superset agains Druid
URL: 
https://github.com/apache/incubator-superset/issues/4932#issuecomment-387021148
 
 
   Update:
   If i run superset refresh_druid
   from console, i got a same error as above.
   `2018-05-07 10:11:56,304:WARNING:root:Failed 2nd attempt to get latest 
segment
   2018-05-07 10:11:56,305:ERROR:root:<urlopen error [Errno -2] Name or service 
not known>
   Traceback (most recent call last):
     File 
"/usr/lib/python2.7/site-packages/superset/connectors/druid/models.py", line 
648, in latest_metadata
       analysisTypes=[])
     File "/usr/lib/python2.7/site-packages/pydruid/client.py", line 286, in 
segment_metadata
       return self._post(query)
     File "/usr/lib/python2.7/site-packages/pydruid/client.py", line 484, in 
_post
       res = urllib.request.urlopen(req)
     File "/usr/lib64/python2.7/urllib2.py", line 154, in urlopen
       return opener.open(url, data, timeout)
     File "/usr/lib64/python2.7/urllib2.py", line 431, in open
       response = self._open(req, data)
     File "/usr/lib64/python2.7/urllib2.py", line 449, in _open
       '_open', req)
     File "/usr/lib64/python2.7/urllib2.py", line 409, in _call_chain
       result = func(*args)
     File "/usr/lib64/python2.7/urllib2.py", line 1244, in http_open
       return self.do_open(httplib.HTTPConnection, req)
     File "/usr/lib64/python2.7/urllib2.py", line 1214, in do_open
       raise URLError(err)
   URLError: <urlopen error [Errno -2] Name or service not known>
   Refreshed metadata from cluster [_default_tier]
   `

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