I've hesitated to say anything since I wasn't real sure how to verify but I've 
seen related behavior with 4.2.1 on Windows Server 2016.

What I see happen is that if I run Karaf in a console, which I think is key, 
and I do a log:tail,  at some point the display stops updating.  Things start 
working if I hit enter or CTRL-C in the window.

I have a warning message in my main control thread that if my thread runs long 
(which it should never do).  When I hit a key in the console, I see the message 
indicating that it's not waking up from a timed sleep cycle.  The thread has a 
20 sec. polling cycle and does very little so it generally runs in a 100 or 200 
hundred millis maybe.

The control thread has a priority default+1 so it is the highest priority 
thread in the app.  I have 4.2.0 that I run as a service on a couple of other 
machines and I've never seen this issue so I'm reasonably sure that the issue 
is related to running in a console window.

Scott

-----Original Message-----
From: Jean-Baptiste Onofré <[email protected]> 
Sent: Thursday, November 29, 2018 11:06 PM
To: [email protected]
Subject: Re: Karaf freezes up under MS-Windows

Hi Tom,

I'm not able to reproduce on the Win7 VM.

Can you provide some details: JDK version, Windows language, ... ?

Thanks,
Regards
JB

On 30/11/2018 05:56, tom leung wrote:
> Based on the latest Apache Karaf v4.1.7, run it on Windows 7.
> 
> Still freeze up at Windows side after entering the command "list - t 0"
> but the same symptom never happen at Linux side.
> 
> So the bug is really related to MS-Windows.
> 
> May you file this symptom as a bug.
> 
> Best Rgds,
> 
> Tom Leung
> 
>  
>  
> 
> On Mon, Aug 13, 2018 at 1:03 PM Jean-Baptiste Onofré <[email protected] 
> <mailto:[email protected]>> wrote:
> 
>     OK, let me try to reproduce (I think I still have a VM with Windows 7).
> 
>     Thanks,
>     Regards
>     JB
> 
>     On 13/08/2018 06:48, tom leung wrote:
>     > No response no matter what I type including "CTRL-C and hit ENTER"
>     >
>     > I have type the following command
>     >
>     > karaf@root()>
>     > karaf@root()> bundle:list -t 0
>     > START LEVEL 100 , List Threshold: 0
>     >
>     > Same issue, still freeze up after typing "CTRL-C" and hit ENTER
>     >
>     >
>     >
>     >
>     >
>     > On Mon, Aug 13, 2018 at 12:44 PM, Jean-Baptiste Onofré
>     <[email protected] <mailto:[email protected]>
>     > <mailto:[email protected] <mailto:[email protected]>>> wrote:
>     >
>     >     Hi Tom,
>     >
>     >     By freeze, you mean that you can type any command anymore in the
>     >     console ?
>     >
>     >     Did you try CTRL-C or typing ENTER after the command ?
>     >     Does the same happen with bundle:list -t 0 command ?
>     >
>     >     Nothing special in the karaf.log ?
>     >
>     >     Regards
>     >     JB
>     >
>     >     On 13/08/2018 06:38, tom leung wrote:
>     >     > I find the same issues happened in V4.1.6 anf v4.2.0
>     >     >
>     >     > At MS-Windows 64-bit Windows 7.0 professional version
>     >     >
>     >     >
>     >     > I install a new fresh copy of Karaf v4.1.6
>     >     >
>     >     > After it shows the following logo
>     >     >
>     >     > C:\software\apache-karaf-4.1.6\bin>karaf
>     >     >         __ __                  ____
>     >     >        / //_/____ __________ _/ __/
>     >     >       / ,<  / __ `/ ___/ __ `/ /_
>     >     >      / /| |/ /_/ / /  / /_/ / __/
>     >     >     /_/ |_|\__,_/_/   \__,_/_/
>     >     >
>     >     >   Apache Karaf (4.1.6)
>     >     >
>     >     > Hit '<tab>' for a list of available commands
>     >     > and '[cmd] --help' for help on a specific command.
>     >     > Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown
>     >     Karaf.
>     >     >
>     >     > karaf@root()>
>     >     >
>     >     > karaf@root()> list
>     >     > START LEVEL 100 , List Threshold: 50
>     >     >
>     >     >
>     >     > I type the following command, Karaf seems to be freezed up
>     withut any
>     >     > response.
>     >     >
>     >     > I need to kill Karaf process manually and restart karaf
>     Karaf again.
>     >     >
>     >     > Same issue if I type the above command again.
>     >     >
>     >     > The same issue also happens in Karaf v4.2.0
>     >     >
>     >     > Is it a bug?
>     >     >
>     >     > Best Rgds,
>     >     >
>     >     > Tom Leung
>     >     >
>     >     >
>     >     >
>     >
>     >     --
>     >     Jean-Baptiste Onofré
>     >     [email protected] <mailto:[email protected]>
>     <mailto:[email protected] <mailto:[email protected]>>
>     >     http://blog.nanthrax.net
>     >     Talend - http://www.talend.com
>     >
>     >
> 
>     -- 
>     Jean-Baptiste Onofré
>     [email protected] <mailto:[email protected]>
>     http://blog.nanthrax.net
>     Talend - http://www.talend.com
> 

--
Jean-Baptiste Onofré
[email protected]
http://blog.nanthrax.net
Talend - http://www.talend.com

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