X2Go Bug report logs - #1328
x2gobroker-daemon does not work with tornado >=5.0

Package: x2gobroker; Maintainer for x2gobroker is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2gobroker is src:x2gobroker.

Reported by: "Rogalla, Niels [IT / Ev. Stiftung Augusta]" <n.rogalla@augusta-bochum.de>

Date: Mon, 24 Sep 2018 11:40:02 UTC

Severity: normal

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Report forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#1328; Package x2gobroker. (Mon, 24 Sep 2018 11:40:03 GMT) Full text and rfc822 format available.

Acknowledgement sent to "Rogalla, Niels [IT / Ev. Stiftung Augusta]" <n.rogalla@augusta-bochum.de>:
New Bug report received and forwarded. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Mon, 24 Sep 2018 11:40:03 GMT) Full text and rfc822 format available.

Message #5 received at submit@bugs.x2go.org (full text, mbox):

From: "Rogalla, Niels [IT / Ev. Stiftung Augusta]" <n.rogalla@augusta-bochum.de>
To: "submit@bugs.x2go.org" <submit@bugs.x2go.org>
Subject: x2gobroker-daemon does not work with tornado >=5.0
Date: Mon, 24 Sep 2018 11:26:31 +0000
[Message part 1 (text/plain, inline)]
Package: x2gobroker

Version: 0.0.3.4 (0x2go1+git20180206.1037+8)



When using python2-tornado >= 5.0 with the latest x2gobroker the x2gobroker-daemon does not start and following error message is shown in the log files:



Traceback (most recent call last):
  File "/usr/bin/x2gobroker-daemon", line 306, in <module>
    launch_ioloop()
  File "/usr/bin/x2gobroker-daemon", line 281, in launch_ioloop
    tornado.ioloop.IOLoop.instance().start()
  File "/usr/lib/python2.7/site-packages/tornado/ioloop.py", line 939, in start
    raise RuntimeError("Cannot share PollIOLoops across processes")
RuntimeError: Cannot share PollIOLoops across processes



This issue was tested against tornado versions 5.0.2, 5.1.0 and 5.1.1 and this error always occurs. The last working version of tornado is 4.5.3.




Kind regards,
Niels

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Information forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#1328; Package x2gobroker. (Mon, 01 Oct 2018 14:15:03 GMT) Full text and rfc822 format available.

Acknowledgement sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Mon, 01 Oct 2018 14:15:03 GMT) Full text and rfc822 format available.

Message #10 received at 1328@bugs.x2go.org (full text, mbox):

From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: "Rogalla, Niels [IT / Ev. Stiftung Augusta]" <n.rogalla@augusta-bochum.de>, 1328@bugs.x2go.org
Subject: Re: [X2Go-Dev] Bug#1328: x2gobroker-daemon does not work with tornado >=5.0
Date: Mon, 01 Oct 2018 14:12:07 +0000
[Message part 1 (text/plain, inline)]
Hi Niels,

On  Mo 24 Sep 2018 13:26:31 CEST, Rogalla, Niels [IT / Ev. Stiftung  
Augusta] wrote:

> Package: x2gobroker
>
> Version: 0.0.3.4 (0x2go1+git20180206.1037+8)
>
>
>
> When using python2-tornado >= 5.0 with the latest x2gobroker the  
> x2gobroker-daemon does not start and following error message is  
> shown in the log files:
>
>
>
> Traceback (most recent call last):
>   File "/usr/bin/x2gobroker-daemon", line 306, in <module>
>     launch_ioloop()
>   File "/usr/bin/x2gobroker-daemon", line 281, in launch_ioloop
>     tornado.ioloop.IOLoop.instance().start()
>   File "/usr/lib/python2.7/site-packages/tornado/ioloop.py", line  
> 939, in start
>     raise RuntimeError("Cannot share PollIOLoops across processes")
> RuntimeError: Cannot share PollIOLoops across processes
>
>
>
> This issue was tested against tornado versions 5.0.2, 5.1.0 and  
> 5.1.1 and this error always occurs. The last working version of  
> tornado is 4.5.3.
>
>
>
>
> Kind regards,
> Niels

Please let us get this fixed with the version of x2gobroker you find  
in the nightly builds.

It is very likely, that you will encounter the same issue when using  
x2gobroker from the X2Go nightly builds, but that version should be  
the one to use for testing setups, as it will be release soon.

And before the release, we should get your problem solved.

Thanks+Greets,
Mike
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