Wikimetrics' cohort page is returning 500 in production {dove} [2 pts]
Closed, ResolvedPublic
Actions

Assigned To

Authored By

	mforns
	Oct 7 2015, 11:48 AM

Description

When the cohorts page is requested, Wikimetrics returns 500. The logs say:

[Wed Oct 07 11:02:01 2015] [error] Traceback (most recent call last):
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app
[Wed Oct 07 11:02:01 2015] [error]     response = self.full_dispatch_request()
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1477, in full_dispatch_request
[Wed Oct 07 11:02:01 2015] [error]     rv = self.handle_user_exception(e)
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1381, in handle_user_exception
[Wed Oct 07 11:02:01 2015] [error]     reraise(exc_type, exc_value, tb)
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1475, in full_dispatch_request
[Wed Oct 07 11:02:01 2015] [error]     rv = self.dispatch_request()
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1461, in dispatch_request
[Wed Oct 07 11:02:01 2015] [error]     return self.view_functions[rule.endpoint](**req.view_args)
[Wed Oct 07 11:02:01 2015] [error]   File "/srv/wikimetrics/wikimetrics/controllers/cohorts.py", line 50, in cohorts_index
[Wed Oct 07 11:02:01 2015] [error]     return render_template('cohorts.html', tags=json.dumps(tags))
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/lib/python2.7/json/__init__.py", line 231, in dumps
[Wed Oct 07 11:02:01 2015] [error]     return _default_encoder.encode(obj)
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/lib/python2.7/json/encoder.py", line 201, in encode
[Wed Oct 07 11:02:01 2015] [error]     chunks = self.iterencode(o, _one_shot=True)
[Wed Oct 07 11:02:01 2015] [error]   File "/usr/lib/python2.7/json/encoder.py", line 264, in iterencode
[Wed Oct 07 11:02:01 2015] [error]     return _iterencode(o, 0)
[Wed Oct 07 11:02:01 2015] [error] UnicodeDecodeError: 'utf8' codec can't decode byte 0xd6 in position 49: unexpected end of data

It seems someone added a tag that causes problems.
T100781 fixed similar problems to this a couple months ago, but the utf8 ghost is back.

Related Objects

Mentioned Here: T114884: Some special characters break Wikimetrics' encoding {dove}
T100781: Wikimetrics crashes when cohort description has special characters {dove} [5pts]

Event Timeline

mforns created this task.Oct 7 2015, 11:48 AM

mforns claimed this task.

mforns raised the priority of this task from to Needs Triage.

mforns updated the task description. (Show Details)

mforns added projects: Analytics-Wikimetrics, Analytics-Kanban.

mforns subscribed.

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptOct 7 2015, 11:48 AM

mforns renamed this task from Wikimetrics' cohort page is returning 500 in production. to Wikimetrics' cohort page is returning 500 in production {dove}.Oct 7 2015, 11:49 AM

mforns moved this task from Next Up to In Progress on the Analytics-Kanban board.

mforns set Security to None.

mforns updated the task description. (Show Details)Oct 7 2015, 11:58 AM

The problem was that a user inserted a tag with the character:

ր

And it seems that the encoding we use does not support that.
It works with all other special characters that we used until today, but not this one... O.o

So, I removed the character in the tag, and the problem was gone.
I created a task to fix this properly to avoid similar issues in the future: T114884.

mforns renamed this task from Wikimetrics' cohort page is returning 500 in production {dove} to Wikimetrics' cohort page is returning 500 in production {dove} [3 pts].Oct 7 2015, 12:19 PM

mforns moved this task from In Progress to Done on the Analytics-Kanban board.

mforns renamed this task from Wikimetrics' cohort page is returning 500 in production {dove} [3 pts] to Wikimetrics' cohort page is returning 500 in production {dove} [2 pts].Oct 7 2015, 12:33 PM

Oh, no. Thanks for tracking this down, @mforns.

Thank you!

jeremyb-phone added a subscriber: jeremyb.Oct 8 2015, 12:49 PM

• kevinator closed this task as Resolved.Oct 9 2015, 4:06 PM

• kevinator subscribed.

Wikimetrics' cohort page is returning 500 in production {dove} [2 pts]Closed, ResolvedPublicActions

Description

Related Objects

Event Timeline

Wikimetrics' cohort page is returning 500 in production {dove} [2 pts]
Closed, ResolvedPublic
Actions