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Posted to user@karaf.apache.org by Dan Tran <da...@gmail.com> on 2013/03/23 19:25:02 UTC
Force kill of JVM corrupt karaf/osgi cache?
Hi my karaf application, currently in development, occasionally get
killed by java service wrapper due to many reasons. However, there
are case it karaf just cant come back ( ie some of bundle got stuck in
grace period or just die ). is it because of file system corruption
due to kill -9? and nothing Karaf can do?
Thanks
-D
Re: Force kill of JVM corrupt karaf/osgi cache?
Posted by Dan Tran <da...@gmail.com>.
The source of the issue is my app running into OOM, where JVM is at
the state where GC is constantly running to the point where JSW
issues initial shutdown ( normal kill ), and finally force kill
Looks like the combination of 2 kills get Karaf cache into corrupted state?
-D
On Sun, Mar 24, 2013 at 7:22 AM, Jean-Baptiste Onofré <jb...@nanthrax.net> wrote:
> Hi Dan,
>
> I used "a lot" kill -9 without problem, so I doubt it's the problem. It may
> be cache corruption, but we need more details to find exactly the issue.
> Could you elaborate your use case (especially what's the source of the
> reboot) ?
>
> Regards
> JB
>
>
> On 03/23/2013 07:25 PM, Dan Tran wrote:
>>
>> Hi my karaf application, currently in development, occasionally get
>> killed by java service wrapper due to many reasons. However, there
>> are case it karaf just cant come back ( ie some of bundle got stuck in
>> grace period or just die ). is it because of file system corruption
>> due to kill -9? and nothing Karaf can do?
>>
>> Thanks
>>
>> -D
>>
>
> --
> Jean-Baptiste Onofré
> jbonofre@apache.org
> http://blog.nanthrax.net
> Talend - http://www.talend.com
Re: Force kill of JVM corrupt karaf/osgi cache?
Posted by Jean-Baptiste Onofré <jb...@nanthrax.net>.
Hi Dan,
I used "a lot" kill -9 without problem, so I doubt it's the problem. It
may be cache corruption, but we need more details to find exactly the issue.
Could you elaborate your use case (especially what's the source of the
reboot) ?
Regards
JB
On 03/23/2013 07:25 PM, Dan Tran wrote:
> Hi my karaf application, currently in development, occasionally get
> killed by java service wrapper due to many reasons. However, there
> are case it karaf just cant come back ( ie some of bundle got stuck in
> grace period or just die ). is it because of file system corruption
> due to kill -9? and nothing Karaf can do?
>
> Thanks
>
> -D
>
--
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com
Re: Force kill of JVM corrupt karaf/osgi cache?
Posted by Dan Tran <da...@gmail.com>.
jsw has a feature to auto restart it managed JVM when problem occurs like:
- JVM exits by itself either normal or abnormal.
- JVM hang
in my case, JVM hangs due memory exhaustion, no response to jsw
heartbeat, not response to normal shutdown request initiate by JSW, a
kill -9 was issue as the last resort
The question here how could it possible corrupted karaf cache which
leads to the need for manual intervention to remove karaf/data
directory to get it start again
-D
On Sat, Mar 23, 2013 at 3:28 PM, Achim Nierbeck <bc...@googlemail.com> wrote:
> Hi Dan,
>
> could you give us more details on why it dies with the server wrapper?
> Regarding killing Karaf, that can be troublesome, but I think after a clean
> reboot (without killing ;))
> it should start nicely again.
>
> regards, Achim
>
>
> 2013/3/23 Dan Tran <da...@gmail.com>
>>
>> Hi my karaf application, currently in development, occasionally get
>> killed by java service wrapper due to many reasons. However, there
>> are case it karaf just cant come back ( ie some of bundle got stuck in
>> grace period or just die ). is it because of file system corruption
>> due to kill -9? and nothing Karaf can do?
>>
>> Thanks
>>
>> -D
>
>
>
>
> --
>
> Apache Karaf <http://karaf.apache.org/> Committer & PMC
> OPS4J Pax Web <http://wiki.ops4j.org/display/paxweb/Pax+Web/> Committer &
> Project Lead
> OPS4J Pax for Vaadin <http://team.ops4j.org/wiki/display/PAXVAADIN/Home>
> Commiter & Project Lead
> blog <http://notizblog.nierbeck.de/>
Re: Force kill of JVM corrupt karaf/osgi cache?
Posted by Achim Nierbeck <bc...@googlemail.com>.
Hi Dan,
could you give us more details on why it dies with the server wrapper?
Regarding killing Karaf, that can be troublesome, but I think after a clean
reboot (without killing ;))
it should start nicely again.
regards, Achim
2013/3/23 Dan Tran <da...@gmail.com>
> Hi my karaf application, currently in development, occasionally get
> killed by java service wrapper due to many reasons. However, there
> are case it karaf just cant come back ( ie some of bundle got stuck in
> grace period or just die ). is it because of file system corruption
> due to kill -9? and nothing Karaf can do?
>
> Thanks
>
> -D
>
--
Apache Karaf <http://karaf.apache.org/> Committer & PMC
OPS4J Pax Web <http://wiki.ops4j.org/display/paxweb/Pax+Web/> Committer &
Project Lead
OPS4J Pax for Vaadin <http://team.ops4j.org/wiki/display/PAXVAADIN/Home>
Commiter & Project Lead
blog <http://notizblog.nierbeck.de/>