[kafka] Import kafka lib module is incorrect
from __future__ import absolute_import
import logging
-import json
from django.core.urlresolvers import reverse
from django.utils.translation import ugettext as _
from desktop.lib.i18n import force_unicode
-from metadata.kafka_api import get_topics
+from kafka.kafka_api import get_topics
from notebook.connectors.base import Api, QueryError
