[Pulp-dev] Hanging tasks (reloaded)
Daniel Alley
dalley at redhat.com
Tue Jan 21 21:58:24 UTC 2020
@Matthias Dellweg <dellweg at atix.de> Would you be willing to file an issue?
On Tue, Jan 21, 2020 at 4:51 PM Daniel Alley <dalley at redhat.com> wrote:
> I'm not sure why I can't reproduce the issue on either of my machines but
> I think it would be proper to re-pin redis until we get it figured out. PR
> here: https://github.com/pulp/pulpcore/pull/513
>
>
> On Tue, Jan 21, 2020 at 4:37 PM Simon Baatz <gmbnomis at gmail.com> wrote:
>
>> I can reproduce the problem described by Matthias with pulp_cookbook's
>> tests almost instantly (I haven't seen a single complete run of the
>> functional tests).
>>
>> Box is pulp3-source-fedora31, redis-py 3.3.1, redis 5.0.7.
>> I don't see these hangs anymore after downgrading redis-py to 3.1.0.
>>
>> Vagrant's VM provider is libvirt with an additional
>> `domain.volume_cache = 'unsafe'` setting. Write I/O is probably
>> extremely fast in this setup (VM can't force flush to disk)
>>
>>
>> On Tue, Jan 21, 2020 at 12:22:33PM -0500, Daniel Alley wrote:
>> > 4 runs on Fedora 31 has not triggered it either. This is using the
>> > latest version of redis-py, 3.3.11, and redis 5.0.7.
>> >
>> > On Tue, Jan 21, 2020 at 11:16 AM Daniel Alley <[1]dalley at redhat.com>
>> > wrote:
>> >
>> > So far I've run it 4 times back to back on a CentOS 7 box and not had
>> > any lockups. I'll try Fedora
>> >
>> > On Tue, Jan 21, 2020 at 9:36 AM Matthias Dellweg <[2]dellweg at atix.de
>> >
>> > wrote:
>> >
>> > @Daniel
>> > It is happening with fresh installations (pulplift with libvirt) on
>> > both boxes i have tried (pulp3-source-debian10 and
>> > pulp3-source-fedora30). To test, i run `prestart; django-admin test
>> > pulpcore` multiple times until it hangs (though i have seen it hang
>> > on
>> > the first try). There is no modification that i know of. Also, up
>> > until
>> > now, i seem to be able to reproduce reliably, while downgrading
>> > (pinning) redis-py completely solves the issue.
>> > On Tue, 21 Jan 2020 09:16:43 -0500
>> > Daniel Alley <[3]dalley at redhat.com> wrote:
>> > > @Matthias Dellweg <[4]dellweg at atix.de>
>> > > did you restart Pulp after upgrading redis-py? Are you seeing
>> > this on
>> > > fresh boxes, or does it require some modification to reproduce?
>> I
>> > > don't think any of us have experienced this thus far.
>> > >
>> > > The only thing I can think of is that maybe when the worker
>> > process
>> > > forks it ends up using a different version of redis-py than the
>> > > parent worker.
>> > >
>> > > On Tue, Jan 21, 2020 at 4:49 AM Matthias Dellweg
>> > <[5]dellweg at atix.de>
>> > > wrote:
>> > >
>> > > > [@ Brian:
>> > > >
>> > > >
>> > [6]
>> https://github.com/pulp/pulpcore/commit/e36e7b5f0eccc176a6e6298df
>> > 29293b014f4710c
>> > > > ]
>> > > >
>> > > > Hi Daniel,
>> > > > thank you for looking into this.
>> > > > What i am seeing is:
>> > > >
>> > > > Jan 21 09:23:10 [7]pulp3-source-fedora30.anubis.example.com
>> > > > gunicorn[23274]: 127.0.0.1 - admin [21/Jan/2020:09:23:10 +0000]
>> > > > "PATCH
>> > > >
>> >
>> /pulp/api/v3/repositories/file/file/3a31ed13-585d-4a36-8398-7df40560
>> > ffa4/
>> > > > HTTP/1.1" 202 67 "-" "python-requests/2.22.0" Jan 21 09:23:10
>> > > > [8]pulp3-source-fedora30.anubis.example.com rq[23269]: pulp:
>> > > > rq.worker:INFO:
>> > [9]23269 at pulp3-source-fedora30.anubis.example.com:
>> > > > 3a776d4d-ff0c-4b44-afae-08dc7c6cc415 Jan 21 09:23:10
>> > > > [10]pulp3-source-fedora30.anubis.example.com rq[23270]: pulp:
>> > > > rq.worker:INFO: resource-manager: Job OK
>> > > > (aa22aed0-0363-45ae-8254-4ab14893a4a1) Jan 21 09:23:10
>> > > > [11]pulp3-source-fedora30.anubis.example.com rq[23269]: pulp:
>> > > > rq.worker:ERROR: Worker
>> > > > [12]rq:worker:23269 at pulp3-source-fedora30.anubis.example.com:
>> > found an
>> > > > unhandled exception, quitting... Jan 21 09:23:10
>> > > > [13]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > Traceback (most
>> > > > recent call last): Jan 21 09:23:10
>> > > > [14]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 782, in prepare_job_execution Jan 21 09:23:10
>> > > > [15]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > pipeline.execute() Jan 21 09:23:10
>> > > > [16]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> >
>> "/usr/local/lib/pulp/lib64/python3.7/site-packages/redis/client.py",
>> > > > line 3707, in execute Jan 21 09:23:10
>> > > > [17]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.reset() Jan 21 09:23:10
>> > > > [18]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> >
>> "/usr/local/lib/pulp/lib64/python3.7/site-packages/redis/client.py",
>> > > > line 3476, in reset Jan 21 09:23:10
>> > > > [19]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.connection_pool.release(self.connection) Jan 21 09:23:10
>> > > > [20]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> >
>> "/usr/local/lib/pulp/lib64/python3.7/site-packages/redis/connection.
>> > py",
>> > > > line 1114, in release Jan 21 09:23:10
>> > > > [21]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self._in_use_connections.remove(connection) Jan 21 09:23:10
>> > > > [22]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > KeyError:
>> > > > Connection<host=localhost,port=6379,db=0> Jan 21 09:23:10
>> > > > [23]pulp3-source-fedora30.anubis.example.com rq[23269]: During
>> > handling
>> > > > of the above exception, another exception occurred: Jan 21
>> > 09:23:10
>> > > > [24]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > Traceback (most
>> > > > recent call last): Jan 21 09:23:10
>> > > > [25]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 515, in work Jan 21 09:23:10
>> > > > [26]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.execute_job(job, queue) Jan 21 09:23:10
>> > > > [27]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > > "/home/vagrant/devel/pulpcore/pulpcore/tasking/worker.py", line
>> > 72,
>> > > > in execute_job Jan 21 09:23:10
>> > > > [28]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > super().execute_job(*args, **kwargs) Jan 21 09:23:10
>> > > > [29]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 727, in execute_job Jan 21 09:23:10
>> > > > [30]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.fork_work_horse(job, queue) Jan 21 09:23:10
>> > > > [31]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 667, in fork_work_horse Jan 21 09:23:10
>> > > > [32]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.main_work_horse(job, queue) Jan 21 09:23:10
>> > > > [33]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 744, in main_work_horse Jan 21 09:23:10
>> > > > [34]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > raise e Jan
>> > > > 21 09:23:10 [35]pulp3-source-fedora30.anubis.example.com
>> > rq[23269]:
>> > > > File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 741, in main_work_horse Jan 21 09:23:10
>> > > > [36]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.perform_job(job, queue) Jan 21 09:23:10
>> > > > [37]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > > "/home/vagrant/devel/pulpcore/pulpcore/tasking/worker.py", line
>> > > > 103, in perform_job Jan 21 09:23:10
>> > > > [38]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > return
>> > > > super().perform_job(job, queue) Jan 21 09:23:10
>> > > > [39]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 866, in perform_job Jan 21 09:23:10
>> > > > [40]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.prepare_job_execution(job, heartbeat_ttl) Jan 21 09:23:10
>> > > > [41]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> > "/usr/local/lib/pulp/lib64/python3.7/site-packages/rq/worker.py",
>> > > > line 782, in prepare_job_execution Jan 21 09:23:10
>> > > > [42]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > pipeline.execute() Jan 21 09:23:10
>> > > > [43]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> >
>> "/usr/local/lib/pulp/lib64/python3.7/site-packages/redis/client.py",
>> > > > line 3445, in __exit__ Jan 21 09:23:10
>> > > > [44]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.reset() Jan 21 09:23:10
>> > > > [45]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> >
>> "/usr/local/lib/pulp/lib64/python3.7/site-packages/redis/client.py",
>> > > > line 3476, in reset Jan 21 09:23:10
>> > > > [46]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self.connection_pool.release(self.connection) Jan 21 09:23:10
>> > > > [47]pulp3-source-fedora30.anubis.example.com rq[23269]: File
>> > > >
>> >
>> "/usr/local/lib/pulp/lib64/python3.7/site-packages/redis/connection.
>> > py",
>> > > > line 1114, in release Jan 21 09:23:10
>> > > > [48]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > > > self._in_use_connections.remove(connection) Jan 21 09:23:10
>> > > > [49]pulp3-source-fedora30.anubis.example.com rq[23269]:
>> > KeyError:
>> > > > Connection<host=localhost,port=6379,db=0> Jan 21 09:23:10
>> > > > [50]pulp3-source-fedora30.anubis.example.com gunicorn[23274]:
>> > 127.0.0.1
>> > > > - admin [21/Jan/2020:09:23:10 +0000] "GET
>> > > > /pulp/api/v3/tasks/3a776d4d-ff0c-4b44-afae-08dc7c6cc415/
>> > HTTP/1.1"
>> > > > 200 477 "-" "python-requests/2.22.0"
>> > > >
>> > > > and that last line repeats forever.
>> > > >
>> > > > On Fri, 17 Jan 2020 09:09:01 -0500
>> > > > Daniel Alley <[51]dalley at redhat.com> wrote:
>> > > >
>> > > > > Different issue perhaps? Are you seeing anything in the logs
>> > that
>> > > > > looks like this? [52]https://github.com/rq/rq/issues/1044
>> > > > >
>> > > > > On Fri, Jan 17, 2020 at 9:06 AM Daniel Alley
>> > <[53]dalley at redhat.com>
>> > > > > wrote:
>> > > > >
>> > > > > > Strange, I'm pretty sure an issue like this is why we
>> pinned
>> > > > > > originally, but upstream said that that particular issue
>> was
>> > > > > > (supposedly) fixed.
>> > > > > >
>> > > > > >
>> > > >
>> > [54]
>> https://github.com/andymccurdy/redis-py/issues/1136#issuecomment
>> > -571168161
>> > > >
>> > > > > >
>> > > > > > On Fri, Jan 17, 2020 at 4:15 AM Matthias Dellweg
>> > > > > > <[55]dellweg at atix.de> wrote:
>> > > > > >> Hello all,
>> > > > > >> I believe i have found a new incarnation of hanging tasks
>> > > > > >> (tm). This time it is pulp3 and as hard to nail down as
>> > ever.
>> > > > > >> I think, it is introduced by
>> > > > > >> e36e7b5f0eccc176a6e6298df29293b014f4710c. Where the
>> > dependency
>> > > > > >> on redis was dropped with the result that 3.3.smth instead
>> > of
>> > > > > >> 3.1.smth was installed.
>> > > > > >>
>> > > > > >> Before filing an issue, is there anyone out there to share
>> > that
>> > > > > >> experience?
>> > > > > >>
>> > > > > >> Also as a thought protocol of how to reproduce:
>> > > > > >> I have seen tasks hanging in both "waiting" and "running"
>> > state
>> > > > > >> when using the command `prestart; django-admin test
>> > pulp_deb`
>> > > > > >> or `<...> test pulpcore`. All the tasks I have seen were
>> > > > > >> `sync`, `general_create` or `general_delete` and looked
>> > like
>> > > > > >> they never started to do anything for real. To have
>> > consistent
>> > > > > >> results, i had the impression that i needed to rebuild the
>> > > > > >> vagrant boxes for every bisecting step. Also updating the
>> > > > > >> python-redis package on a box that worked, produced a
>> > hanging
>> > > > > >> task in the next run.
>> > > > > >>
>> > > > > >> Have a good day,
>> > > > > >> Matthias
>> >
>> > References
>> >
>> > 1. mailto:dalley at redhat.com
>> > 2. mailto:dellweg at atix.de
>> > 3. mailto:dalley at redhat.com
>> > 4. mailto:dellweg at atix.de
>> > 5. mailto:dellweg at atix.de
>> > 6.
>> https://github.com/pulp/pulpcore/commit/e36e7b5f0eccc176a6e6298df29293b014f4710c
>> > 7. http://pulp3-source-fedora30.anubis.example.com/
>> > 8. http://pulp3-source-fedora30.anubis.example.com/
>> > 9. mailto:23269 at pulp3-source-fedora30.anubis.example.com
>> > 10. http://pulp3-source-fedora30.anubis.example.com/
>> > 11. http://pulp3-source-fedora30.anubis.example.com/
>> > 12. mailto:rq:worker:23269 at pulp3-source-fedora30.anubis.example.com
>> > 13. http://pulp3-source-fedora30.anubis.example.com/
>> > 14. http://pulp3-source-fedora30.anubis.example.com/
>> > 15. http://pulp3-source-fedora30.anubis.example.com/
>> > 16. http://pulp3-source-fedora30.anubis.example.com/
>> > 17. http://pulp3-source-fedora30.anubis.example.com/
>> > 18. http://pulp3-source-fedora30.anubis.example.com/
>> > 19. http://pulp3-source-fedora30.anubis.example.com/
>> > 20. http://pulp3-source-fedora30.anubis.example.com/
>> > 21. http://pulp3-source-fedora30.anubis.example.com/
>> > 22. http://pulp3-source-fedora30.anubis.example.com/
>> > 23. http://pulp3-source-fedora30.anubis.example.com/
>> > 24. http://pulp3-source-fedora30.anubis.example.com/
>> > 25. http://pulp3-source-fedora30.anubis.example.com/
>> > 26. http://pulp3-source-fedora30.anubis.example.com/
>> > 27. http://pulp3-source-fedora30.anubis.example.com/
>> > 28. http://pulp3-source-fedora30.anubis.example.com/
>> > 29. http://pulp3-source-fedora30.anubis.example.com/
>> > 30. http://pulp3-source-fedora30.anubis.example.com/
>> > 31. http://pulp3-source-fedora30.anubis.example.com/
>> > 32. http://pulp3-source-fedora30.anubis.example.com/
>> > 33. http://pulp3-source-fedora30.anubis.example.com/
>> > 34. http://pulp3-source-fedora30.anubis.example.com/
>> > 35. http://pulp3-source-fedora30.anubis.example.com/
>> > 36. http://pulp3-source-fedora30.anubis.example.com/
>> > 37. http://pulp3-source-fedora30.anubis.example.com/
>> > 38. http://pulp3-source-fedora30.anubis.example.com/
>> > 39. http://pulp3-source-fedora30.anubis.example.com/
>> > 40. http://pulp3-source-fedora30.anubis.example.com/
>> > 41. http://pulp3-source-fedora30.anubis.example.com/
>> > 42. http://pulp3-source-fedora30.anubis.example.com/
>> > 43. http://pulp3-source-fedora30.anubis.example.com/
>> > 44. http://pulp3-source-fedora30.anubis.example.com/
>> > 45. http://pulp3-source-fedora30.anubis.example.com/
>> > 46. http://pulp3-source-fedora30.anubis.example.com/
>> > 47. http://pulp3-source-fedora30.anubis.example.com/
>> > 48. http://pulp3-source-fedora30.anubis.example.com/
>> > 49. http://pulp3-source-fedora30.anubis.example.com/
>> > 50. http://pulp3-source-fedora30.anubis.example.com/
>> > 51. mailto:dalley at redhat.com
>> > 52. https://github.com/rq/rq/issues/1044
>> > 53. mailto:dalley at redhat.com
>> > 54.
>> https://github.com/andymccurdy/redis-py/issues/1136#issuecomment-571168161
>> > 55. mailto:dellweg at atix.de
>>
>> > _______________________________________________
>> > Pulp-dev mailing list
>> > Pulp-dev at redhat.com
>> > https://www.redhat.com/mailman/listinfo/pulp-dev
>>
>>
>> --
>> Simon Baatz <gmbnomis at gmail.com>
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/pulp-dev/attachments/20200121/42cf873c/attachment.htm>
More information about the Pulp-dev
mailing list