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From Juan Manuel Formoso <jform...@gmail.com>
Subject Re: cassandra just gone..no heap dump, no log info
Date Wed, 18 Sep 2013 12:57:29 GMT
This shouldn't happen if you have swap active in the server

On Wednesday, September 18, 2013, Franc Carter wrote:

>
> A random guess - possibly an OOM (Out of Memory) where Linux will kill a
> process to recover memory when it is desperately low on memory. Have a look
> in either your syslog output of the output of dmesg
>
> cheers
>
>
> On Wed, Sep 18, 2013 at 10:21 PM, Hiller, Dean <Dean.Hiller@nrel.gov<javascript:_e({},
'cvml', 'Dean.Hiller@nrel.gov');>
> > wrote:
>
>> Anyone know how to debug cassandra processes just exiting?  There is no
>> info in the cassandra logs and there is no heap dump file(which in the past
>> has shown up in /opt/cassandra/bin directory for me).
>>
>> This occurs when running a map/reduce job that put severe load on the
>> system.  The logs look completely fine.  I find it odd
>>
>>  1.  No logs of why it exited at all
>>  2.  No heap dump which would imply there would be no logs as it crashed
>>
>> Is there any other way a process can die and linux would log it somehow?
>>  (like running out of memory)
>>
>> Thanks,
>> Dean
>>
>
>
>
> --
>
> *Franc Carter* | Systems architect | Sirca Ltd
>  <javascript:_e({}, 'cvml', 'marc.zianideferranti@sirca.org.au');>
>
> franc.carter@sirca.org.au <javascript:_e({}, 'cvml',
> 'franc.carter@sirca.org.au');> | www.sirca.org.au
>
> Tel: +61 2 8355 2514
>
> Level 4, 55 Harrington St, The Rocks NSW 2000
>
> PO Box H58, Australia Square, Sydney NSW 1215
>
>
>

-- 
*Juan Manuel Formoso
*Senior Geek
http://twitter.com/juanformoso
http://seniorgeek.com.ar
LLAP

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