ImportError: No module named fcntl

[attibalazs]

Hi,

I`m using windows 7 64bit, and following the instructions from your install guide: http://airbnb.io/caravel/installation.html

I run into an error when i try to start the server
python caravel runserver -p 8088

Any help is much appreciated, thank you.

C:\Python27\Python27\lib\site-packages\flask_appbuilder\forms.py:235: FlaskWTFDeprecationWarning: "flask_wtf.Form" has been renamed to "FlaskForm" and will be removed in 1.0.
  return type('DynamicForm', (DynamicForm,), form_props)
2016-10-03 14:53:08,405:INFO:flask_appbuilder.base:Registering class CssTemplateModelView on menu CSS Templates
Traceback (most recent call last):
  File "c:\python27\python27\lib\runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "c:\python27\python27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Python27\Python27\Scripts\gunicorn.exe\__main__.py", line 5, in <module>
  File "c:\python27\python27\lib\site-packages\gunicorn\app\wsgiapp.py", line 10, in <module>
    from gunicorn.app.base import Application
  File "c:\python27\python27\lib\site-packages\gunicorn\app\base.py", line 12, in <module>
    from gunicorn import util
  File "c:\python27\python27\lib\site-packages\gunicorn\util.py", line 9, in <module>
    import fcntl
ImportError: No module named fcntl

[xrmx]

As written in the documentation windows is not a supported platform. As you have found out gunicorn does not work on windows. My advice would be to install it on a linux machine. Or you can use the development web server which of course is not advised to run in production.

[attibalazs]

ok, thanks

[nekia]

I could avoid this error on windos env by using debug mode options.

superset runserver -d

[naveenjafer]

@nekia How exactly did you get it running??

[nekia]

@naveenjafer As far as my quick check, every example dashboard (Misc Charts/Births/World's Bank Data) seems to be running properly.

[naveenjafer]

@nekia what I meant is, where do I set these debug mode options? I am new to gunicorn. Thanks

[nekia]

@naveenjafer I just put '-d' option with runserver command for using development web server ( starting web server in debug mode) as I mentioned #1235 (comment) .

$ superset runserver -?
usage: superset runserver [-?] [-s SOCKET] [-t TIMEOUT] [-w WORKERS] [-p PORT]
                          [-a ADDRESS] [-n] [-d]

Starts a Superset web server.

optional arguments:
  -?, --help            show this help message and exit
  -s SOCKET, --socket SOCKET
                        Path to a UNIX socket as an alternative to
                        address:port, e.g. /var/run/superset.sock. Will
                        override the address and port values.
  -t TIMEOUT, --timeout TIMEOUT
                        Specify the timeout (seconds) for the gunicorn web
                        server
  -w WORKERS, --workers WORKERS
                        Number of gunicorn web server workers to fire up
  -p PORT, --port PORT  Specify the port on which to run the web server
  -a ADDRESS, --address ADDRESS
                        Specify the address to which to bind the web server
  -n, --no-reload       Don't use the reloader in debug mode
  -d, --debug           Start the web server in debug mode

$ superset runserver -d -p 9099
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Starting Superset server in DEBUG mode
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

2017-11-07 19:49:57,031:INFO:werkzeug: * Running on http://0.0.0.0:9099/ (Press CTRL+C to quit)
2017-11-07 19:49:57,032:INFO:werkzeug: * Restarting with stat
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Starting Superset server in DEBUG mode
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

2017-11-07 19:49:59,518:WARNING:werkzeug: * Debugger is active!
2017-11-07 19:49:59,538:INFO:werkzeug: * Debugger PIN: 423-263-045

And please check the following note about using development web server.
http://superset.apache.org/installation.html#a-proper-wsgi-http-server