[GitHub] [incubator-superset] vatsalpande opened issue #5969: Apache Superset Issue With Kylin - No Tables shown on successful connection

[GitHub]

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- [ Y ] I have checked the superset logs for python stacktraces and included it 
here as text if any
- [ Y ] I have reproduced the issue with at least the latest released version 
of superset
- [ Y ] I have checked the issue tracker for the same issue and I haven't found 
one similar


### Superset version
Superset 0.27.0

### Expected results
Should show tables on Successful Connection.

### Actual results
I am trying to configure Kylin connection with Superset. I have configured 
kylin package and my connection seems to be ok. However, it doesn't show me any 
tables, at the bottom of the page.
I checked the logs and it tries to call the below Rest API - 
############################################################################
method: GET
url: http://XXXX.XXXX:80/kylin/api/tables_and_columns?project=projectName
headers: {'User-Agent': 'Kylin Python Client', 'Authorization': 'Basic 
someEncodedPassword'}
body: None
############################################################################
I have tried the above url with Postman, and it returns me table and column 
names.

Moreover, if I go to Sql Editor in Sql Lab it shows me Database name, schema & 
Tables. But as soon as I click on any of the table, it gives an error  " 
startswith first arg must be bytes or a tuple of bytes, not str"

Attached screenshots for same
<img width="1423" alt="3" 
src="https://user-images.githubusercontent.com/12035570/45994531-dfd11500-c048-11e8-8a67-1c75bd825873.png";>
<img width="1421" alt="1" 
src="https://user-images.githubusercontent.com/12035570/45994532-dfd11500-c048-11e8-9f27-a8d2c1764017.png";>
<img width="1440" alt="2" 
src="https://user-images.githubusercontent.com/12035570/45994533-dfd11500-c048-11e8-9560-08f135a6a7f0.png";>

### Steps to reproduce

[ Full content available at: 
https://github.com/apache/incubator-superset/issues/5969 ]
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