Looks like a fine fix. Can you post this on reviews.reviewboard.org?

Thanks!
-David
On Wed, Sep 9, 2015 at 10:33 AM Alexey Neyman <alexey.ney...@gmail.com>
wrote:

> FWIW, converting an iterator to list explicitly seems to help. Changed
> this line:
>
>     return json.dumps(review_ui.serialize_comments(
>         file_attachment.get_comments()))
>
> to this
>
>     return json.dumps(list(review_ui.serialize_comments(
>         file_attachment.get_comments())))
>
> no crash observed. Don't know if it is the right fix, though.
>
> Regards,
> Alexey.
>
>
> On Friday, September 4, 2015 at 10:23:45 AM UTC-7, Alexey Neyman wrote:
>>
>> Hi all,
>>
>> We have a "Something broke (Error 500)" while trying to access one of the
>> review requests. I am pretty sure it was displayed fine previously at some
>> point, but at some point stopped working. I suspect the 2.0.19 update is
>> the culprit, as this last call in the stack trace
>> (file_attachment_comments) has changed substantially from 2.0.18.
>>
>> The stack trace is:
>>
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/core/handlers/base.py",
>>  line 112, in get_response
>>     response = wrapped_callback(request, *callback_args, **callback_kwargs)
>>   File 
>> "/usr/lib/python2.6/site-packages/ReviewBoard-2.0.19-py2.6.egg/reviewboard/accounts/decorators.py",
>>  line 21, in _check
>>     return login_required(view_func)(*args, **kwargs)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/contrib/auth/decorators.py",
>>  line 22, in _wrapped_view
>>     return view_func(request, *args, **kwargs)
>>   File 
>> "/usr/lib/python2.6/site-packages/ReviewBoard-2.0.19-py2.6.egg/reviewboard/site/decorators.py",
>>  line 35, in _check
>>     return view_func(request, local_site=local_site, *args, **kwargs)
>>   File 
>> "/usr/lib/python2.6/site-packages/ReviewBoard-2.0.19-py2.6.egg/reviewboard/reviews/views.py",
>>  line 721, in review_detail
>>     RequestContext(request, context_data))
>>   File 
>> "*/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/shortcuts/*__init__.py",
>>  line 29, in render_to_response
>>     return HttpResponse(loader.render_to_string(*args, **kwargs), 
>> **httpresponse_kwargs)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/loader.py",
>>  line 164, in render_to_string
>>     return t.render(Context(dictionary))
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 140, in render
>>     return self._render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 134, in _render
>>     return self.nodelist.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 840, in render
>>     bit = self.render_node(node, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 854, in render_node
>>     return node.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/loader_tags.py",
>>  line 123, in render
>>     return compiled_parent._render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 134, in _render
>>     return self.nodelist.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 840, in render
>>     bit = self.render_node(node, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 854, in render_node
>>     return node.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/loader_tags.py",
>>  line 123, in render
>>     return compiled_parent._render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 134, in _render
>>     return self.nodelist.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 840, in render
>>     bit = self.render_node(node, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 854, in render_node
>>     return node.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/loader_tags.py",
>>  line 62, in render
>>     result = block.nodelist.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 840, in render
>>     bit = self.render_node(node, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 854, in render_node
>>     return node.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/loader_tags.py",
>>  line 155, in render
>>     return self.render_template(self.template, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/loader_tags.py",
>>  line 137, in render_template
>>     output = template.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 140, in render
>>     return self._render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 134, in _render
>>     return self.nodelist.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 840, in render
>>     bit = self.render_node(node, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 854, in render_node
>>     return node.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/defaulttags.py",
>>  line 305, in render
>>     return nodelist.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 840, in render
>>     bit = self.render_node(node, context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/base.py",
>>  line 854, in render_node
>>     return node.render(context)
>>   File 
>> "/usr/lib/python2.6/site-packages/Django-1.6.11.1-py2.6.egg/django/template/defaulttags.py",
>>  line 203, in render
>>     nodelist.append(node.render(context))
>>   File 
>> "/usr/lib/python2.6/site-packages/Djblets-0.8.21-py2.6.egg/djblets/util/decorators.py",
>>  line 122, in render
>>     return self.tag_func(context, *args)
>>   File 
>> "/usr/lib/python2.6/site-packages/ReviewBoard-2.0.19-py2.6.egg/reviewboard/reviews/templatetags/reviewtags.py",
>>  line 91, in file_attachment_comments
>>     file_attachment.get_comments()))
>>   File "*/usr/lib64/python2.6/json/*__init__.py", line 230, in dumps
>>     return _default_encoder.encode(obj)
>>   File "/usr/lib64/python2.6/json/encoder.py", line 367, in encode
>>     chunks = list(self.iterencode(o))
>>   File "/usr/lib64/python2.6/json/encoder.py", line 317, in _iterencode
>>     for chunk in self._iterencode_default(o, markers):
>>   File "/usr/lib64/python2.6/json/encoder.py", line 323, in 
>> _iterencode_default
>>     newobj = self.default(o)
>>   File "/usr/lib64/python2.6/json/encoder.py", line 344, in default
>>     raise TypeError(repr(o) + " is not JSON serializable")
>>
>> TypeError: <generator object serialize_comments at 0x7fb4869584b0> is not 
>> JSON serializable
>>
>> Regards,
>> Alexey.
>>
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-- 
-David

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