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From Franc Carter <>
Subject Re: cassandra just heap dump, no log info
Date Wed, 18 Sep 2013 12:45:01 GMT
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


On Wed, Sep 18, 2013 at 10:21 PM, Hiller, Dean <> 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
 <> |

Tel: +61 2 8355 2514

Level 4, 55 Harrington St, The Rocks NSW 2000

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