I am seeing an unusual hiccup related to Active Record Session store
that
happens intermittently (and I am unable to reproduce locally):
NoMethodError: undefined method `delete’ for nil:NilClass
Rails: 3.2.21
(I am running Spree 2.0.13.beta)
I am using active_record_store and the stacktrace does not pass through
my
app. Interestingly, the stacktrace passes thruogh
active_record/session_store.rb code (see full stacktrace
gist:817b37e262e8247e85a2 · GitHub)
Some observations:
• I tried logging in as this user and also hijacking the user’s session
by
record id (moving a fake session id into the sessin id & data fields of
the
session where the symptom is) – I was unable to reproduce this in dev
completely.
• This happening on different users on different places in my app
(occurance is 1 in several thousand hits).
• It looks like it happens for the same user a couple of times in a row
(makes sense if they load more than 1 page with the same session
problem)
• Examining the sessions table for the sessions where the problem is
happening I see that the ‘data’ field is very large for these records,
for
example: gist:109af1b7f1595c115c85 · GitHub
All of the records with bad sessions have a very large amount of data in
them, whereas my other session records look to have just a few lines of
data in them.
Any suggestions for a remedy here?