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问题:
I'm working on django project and I got this error email.
Stack trace
File "/usr/local/lib/python2.7/dist-packages/Django-1.4.3-py2.7.egg/django/core/handlers/wsgi.py", line 180, in _get_post self._load_post_and_files() File "/usr/local/lib/python2.7/dist-packages/Django-1.4.3-py2.7.egg/django/http/__init__.py", line 379, in _load_post_and_files self._post, self._files = QueryDict(self.body, encoding=self._encoding), MultiValueDict() File "/usr/local/lib/python2.7/dist-packages/Django-1.4.3-py2.7.egg/django/http/__init__.py", line 335, in body self._body = self.read() File "/usr/local/lib/python2.7/dist-packages/Django-1.4.3-py2.7.egg/django/http/__init__.py", line 391, in read return self._stream.read(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/Django-1.4.3-py2.7.egg/django/core/handlers/wsgi.py", line 98, in read result = self.buffer + self._read_limited() File "/usr/local/lib/python2.7/dist-packages/Django-1.4.3-py2.7.egg/django/core/handlers/wsgi.py", line 92, in _read_limited result = self.stream.read(size) UnreadablePostError: request data read error
Why this error is happening ?
How to solve?
回答1:
Why this error is happening ?
because the server is recieving a malformed request, which can happen for many reasons. someone might've canceled loading the page, someone might have a crappy internet connection that cut out, cosmic rays could have flipped a bit.
it's not something you really need to worry about until it starts happening very frequently. you might want to make a note when these errors happen and see if it's consequently on the same page or not.
How to solve?
you can't. not at this point at least. gather some more data on when this bug occurs exactly. see if you can find a way to trigger it manually.
回答2:
With an application at scale, you'll always get the occasional cancelled request. If you're receiving 500 emails they can be quite tedious.
I wouldn't advise completely ignoring them. If UnreadablePostErrors are pouring in, then something's wrong e.g. longer response times causes users to cancel requests.
My solution was to ignore 1/20 UnreadablePostErrors. That way, if something goes wrong i'll still be informed, but i'll be pestered 20x less. It's a bit dirty, but it worked for me.
import logging import random from django.http import UnreadablePostError class ReduceUnreadablePostErrors(logging.Filter): def filter(self, record): if record.exc_info: exc_value = record.exc_info[1] if isinstance(exc_value, UnreadablePostError): return random.randint(1,20) % 20==0 return True
settings.py:
'filters': { 'reduce_unreadable_post_errors' : { '()' : 'path.to.your.ReduceUnreadablePostErrors' }, ... 'handlers': { 'mail_admins': { 'level': 'ERROR', 'filters': ['require_debug_false','reduce_unreadable_post_errors'], 'class': 'common.utils.log.AdminEmailHandlerWithEmail' }, ...
