流媒体与德鲁伊，卡夫卡，超级集团

Question

我正在使用Kafka，Druid和SuperSet测试数据流。

我正处于德鲁伊的一些数据（见1. picutre）。

之后，我可以通过选项＆＃34;刷新德鲁伊元数据＆＃34;在Superset中生成德鲁伊数据源。 （见2.pic） 问题是，当我想查询数据时，我收到此错误消息：

URLError: <urlopen error [Errno -2] Name or service not known>

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/superset/viz.py", line 329, in get_df_payload
    df = self.get_df(query_obj)
  File "/usr/lib/python2.7/site-packages/superset/viz.py", line 142, in get_df
    self.results = self.datasource.query(query_obj)
  File "/usr/lib/python2.7/site-packages/superset/connectors/druid/models.py", line 1238, in query
    client=client, query_obj=query_obj, phase=2)
  File "/usr/lib/python2.7/site-packages/superset/connectors/druid/models.py", line 959, in get_query_str
    return self.run_query(client=client, phase=phase, **query_obj)
  File "/usr/lib/python2.7/site-packages/superset/connectors/druid/models.py", line 1126, in run_query
    client.timeseries(**qry)
  File "/usr/lib/python2.7/site-packages/pydruid/client.py", line 167, in timeseries
    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>

另见3. pic

知道什么可能是个问题？

我正在通过NiFi喂Kafka，然后我将SAM卡夫卡源连接到SAM的德鲁伊目标。

谢谢！

1. 承受力

2. 承受力

3. 承受力

4. 超集中没有数据

Answer 1

似乎Superset连接到您的Broker-Node时遇到了问题。检查群集运行状况。特别是Broker-和Coordinator Node日志。

Answer 2

问题解决了， 问题是在超集UI中的集群配置中没有定义代理主机。 我将其设置为值： localhost 现在它已经启动并运行了。