#2122: Race condition causes error describing step
-------------------+-----------------------
Reporter: tmidd | Owner:
Type: defect | Status: new
Priority: minor | Milestone: undecided
Version: 0.8.5 | Keywords:
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Not sure on the details, but it seems that sometimes when the waterfall
page is refreshed it causes the following exception in twistd.log (and one
of the commands on the waterfall just shows '???'). It seems to be some
kind of race condition, since most of the time the same command will
display normally and not generate an exception. As suggested in the
traceback, the command uses WithProperties... I don't know how those are
actually handled, but at a guess something is meant to parse it into a
string before describe is called? Let me know if you need any further
info.
{{{
2011-10-05 14:06:07+1300 [-] Error describing step
Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-
packages/buildbot-0.8.5-py2.6.egg/buildbot/process/build.py", line 389, in
_stepDone
return self.startNextStep()
File "/usr/local/lib/python2.6/dist-
packages/buildbot-0.8.5-py2.6.egg/buildbot/process/build.py", line 378, in
startNextStep
d = defer.maybeDeferred(s.startStep, self.remote)
File "/usr/local/lib/python2.6/dist-
packages/Twisted-11.0.0-py2.6-linux-x86_64.egg/twisted/internet/defer.py",
line 133, in maybeDeferred
result = f(*args, **kw)
File "/usr/local/lib/python2.6/dist-
packages/buildbot-0.8.5-py2.6.egg/buildbot/process/buildstep.py", line
514, in startStep
self.step_status.setText(self.describe(False))
--- <exception caught here> ---
File "/usr/local/lib/python2.6/dist-
packages/buildbot-0.8.5-py2.6.egg/buildbot/steps/shell.py", line 173, in
describe
if len(words) < 1:
exceptions.AttributeError: WithProperties instance has no
attribute '__len__'
}}}
--
Ticket URL: <http://trac.buildbot.net/ticket/2122>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation
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