#2395: test_master fails randomly
-------------------+--------------------
Reporter: dustin | Owner: dustin
Type: defect | Status: new
Priority: major | Milestone: 0.8.8
Version: master | Keywords:
-------------------+--------------------
We "occasionally" (approximately one builder per commit) see error pairs
like this:
{{{
buildbot.test.integration.test_master.RunMaster.test_master2 ... Exception
twisted.internet.defer._DefGen_Return: _DefGen_Return() in <generator
object _sortBuilders at 0x35374b0> ignored
[ERROR][ERROR]
===============================================================================
[ERROR]
Traceback (most recent call last):
File
"/home/dustin/code/buildbot/t/buildbot/master/buildbot/process/botmaster.py",
line 385, in maybeStartBuildsOn
yield self._sortBuilders(list(existing_pending | new_builders))
exceptions.GeneratorExit:
buildbot.test.integration.test_master.RunMaster.test_master2
===============================================================================
[ERROR]
Traceback (most recent call last):
File
"/home/dustin/code/buildbot/t/buildbot/master/buildbot/process/botmaster.py",
line 444, in _sortBuilders
builders = yield defer.maybeDeferred(lambda :
exceptions.GeneratorExit:
buildbot.test.integration.test_master.RunMaster.test_master2
-------------------------------------------------------------------------------
Ran 2 tests in 0.612s
}}}
They all seem to occur on Python 2.7, but there's a small sample size, so
that may be a false lead.
The error occurs in different tests, but with exactly the same tracebacks:
{{{
buildbot.test.integration.test_upgrade.TestWeirdChanges.testUpgradeChangeNoRevision
buildbot.test.regressions.test_import_unicode_changes.TestUnicodeChanges.testUTF16Change
}}}
These both run after test_master. This suggests there's some "lingering"
after-effect of test_master, and somehow trial is missing it and it's
managing to inject a very weird failure into the reactor later.
I'd suspect threads, but the test is configured to shut down the
threadpool, and according to {{{threading.enumerate}}} it's doing so
successfully.
I can't replicate this problem on my machine. I ran about 45,000 reps
overnight with no ill effects.
The test is skipped for now.
--
Ticket URL: <http://trac.buildbot.net/ticket/2395>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation
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