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

Full log


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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
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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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