HUE WebUI doesn't launch

[#1]

Hi everyone,

i have a clean installation of cdh5 on a 4 node cluster. health of teh cluster is good. however, when i launch Hue WebUI, i get the following:

Traceback (most recent call last):
  File "/usr/lib/hue/desktop/core/src/desktop/lib/wsgiserver.py", line 1198, in communicate
    req.respond()
  File "/usr/lib/hue/desktop/core/src/desktop/lib/wsgiserver.py", line 568, in respond
    self._respond()
  File "/usr/lib/hue/desktop/core/src/desktop/lib/wsgiserver.py", line 580, in _respond
    response = self.wsgi_app(self.environ, self.start_response)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/handlers/wsgi.py", line 241, in __call__
    response = self.get_response(request)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/handlers/base.py", line 179, in get_response
    response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/handlers/base.py", line 228, in handle_uncaught_exception
    return callback(request, **param_dict)
  File "/usr/lib/hue/desktop/core/src/desktop/views.py", line 323, in serve_500_error
    return render("500.mako", request, {'traceback': traceback.extract_tb(exc_info[2])})
  File "/usr/lib/hue/desktop/core/src/desktop/lib/django_util.py", line 222, in render
    **kwargs)
  File "/usr/lib/hue/desktop/core/src/desktop/lib/django_util.py", line 144, in _render_to_response
    return django_mako.render_to_response(template, *args, **kwargs)
  File "/usr/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 117, in render_to_response
    return HttpResponse(render_to_string(template_name, data_dictionary), **kwargs)
  File "/usr/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 106, in render_to_string_normal
    result = template.render(**data_dict)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 443, in render
    return runtime._render(self, self.callable_, args, data)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 786, in _render
    **_kwargs_for_callable(callable_, data))
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 818, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 844, in _exec_template
    callable_(context, *args, **kwargs)
  File "/tmp/tmp8Or4H4/desktop/500.mako.py", line 37, in render_body
    __M_writer(unicode( commonheader(_('Error'), "", user) ))
  File "/usr/lib/hue/desktop/core/src/desktop/views.py", line 404, in commonheader
    'user': user
  File "/usr/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 104, in render_to_string_normal
    template = lookup.get_template(template_name)
  File "/usr/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 80, in get_template
    return real_loader.get_template(uri)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/lookup.py", line 245, in get_template
    return self._load(srcfile, uri)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/lookup.py", line 311, in _load
    **self.template_args)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 321, in __init__
    module = self._compile_from_file(path, filename)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 379, in _compile_from_file
    module = compat.load_module(self.module_id, path)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/compat.py", line 55, in load_module
    return imp.load_source(module_id, path, fp)
  File "/tmp/tmp8Or4H4/desktop/common_header.mako.py", line 26, in <module>
    from search.search_controller import SearchController
ImportError: No module named search.search_controller
===
the logs show:

Internal Server Error: /accounts/login/
Traceback (most recent call last):
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/handlers/base.py", line 101, in get_response
    request.path_info)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/urlresolvers.py", line 300, in resolve
    sub_match = pattern.resolve(new_path)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/urlresolvers.py", line 209, in resolve
    return ResolverMatch(self.callback, args, kwargs, self.name)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/urlresolvers.py", line 216, in callback
    self._callback = get_callable(self._callback_str)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/utils/functional.py", line 27, in wrapper
    result = func(*args)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/urlresolvers.py", line 92, in get_callable
    lookup_view = getattr(import_module(mod_name), func_name)
  File "/usr/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/usr/lib/hue/desktop/core/src/desktop/auth/views.py", line 37, in <module>
    from useradmin.views import ensure_home_directory
ImportError: No module named useradmin.views
=== 
any ideas on how to resolve this?

thanks so much for any expertise!

[#2]

Did you install CDH with the packages?

Could you list them with the equivalent of:

sudo dpkg -l | grep hue

Romain

[#3]

Hi Romain,

thank you very much for your response! 

yes, i installed cdh5 via packages.

below is the info you requested. i hope this helps and let me know if there is more info you need. this is off of the host that has cdh installed.

[root@retail-paas1 ~]# yum list installed |grep hue
hue-beeswax.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-common.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-hbase.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-impala.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-pig.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-plugins.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-rdbms.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-search.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-spark.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-sqoop.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6
hue-zookeeper.x86_64 3.5.0+cdh5.0.1+371-1.cdh5.0.1.p0.30.el6

[#4]

hi,
just checking to see if any experts out there have any ideas?
thanks!

[#5]

cat $HUE_HOME/build/env/lib/python2.6/site-packages/hue.pth ?

Where HUE_HOME is probably /usr/lib/hue

Also, did you restart Hue at least once?

Romain

[#6]

Hi Romain,

I have also installed clean CDH5 and I was not able to launch Hue Web UI. I am also getting same error messages. I could not able to find hue.pth file in below location. Can you please advise me what could be the issue?

root@fiappd37:+b/python2.6/site-packages> yum list installed |grep hue
hue-beeswax.x86_64              3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-common.x86_64               3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-hbase.x86_64                3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-impala.x86_64               3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-pig.x86_64                  3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-plugins.x86_64              3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-rdbms.x86_64                3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-search.x86_64               3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-spark.x86_64                3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-sqoop.x86_64                3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
hue-zookeeper.x86_64            3.6.0+cdh5.1.0+86-1.cdh5.1.0.p0.36.el6   @cloudera-cdh5
root@fiappd37:+b/python2.6/site-packages> ls -ltr *pth
-rw-r--r-- 1 root root   30 Jul 12 11:29 setuptools.pth
-rw-r--r-- 1 root root 1953 Jul 12 11:29 easy-install.pth
lrwxrwxrwx 1 root root   20 Aug 21 09:30 hue.pth -> /var/lib/hue/hue.pth
root@fiappd37:+b/python2.6/site-packages> pwd
/usr/lib/hue/build/env/lib/python2.6/site-packages
root@fiappd37:+b/python2.6/site-packages> ls -ltr /var/lib/hue
total 80
-rw-r--r-- 1 hue hue 77824 Aug 26 12:13 desktop.db

Raja

[#7 · Accepted solution]

There are a bunch of Hue packages missing.

Could you install the metapackage 'hue' that way you get all of them?

Romain

[#8]

Thanks Romain,

After I install those packages I am able to open Hue web UI.

[#9]

Romain

I have exactly the same problem.

But, how do I install metapackages?

Thanks,

Samuel

[#10]

Install the package named 'hue'