On 22/11/13 14:52, Matt Williams wrote:
>> I'm using Oracle JVM 1.7
>
> Thanks! All our testing has been with OpenJDK.
Good to know, thanks.
> Do you know why Oracle JVM was installed?
Well, I can see that CW seemingly gets stuck from time to time, and needs a
restart of components (e.g., after growing workload it stops giving me back
200s, so I reduce workload but no 200 any more for minutes..., then I manually
ssh into bono, sprout, homestead and restart'em all (including cassandra)....,
and after a while I can see these 200s coming back again. I just thought that
having the right java might have helped (esp. due to Cassandra), so I just
replaced myself OpenJDK with Oracle. Would u advise to go back to OpenJDK ?
> Was it installed explicitly or has Ubuntu resolved its dependencies in a
> different way on your system from ours?
it didn't come from .deb deps resolution (see description above). Yet on this
side, why don't you put in the homestead .deb the right Cassandra+dsc version
deps ?
> If you install OpenJDK do you still see the problem?
can't remember, probably not, but as I messed around with cassandra upgrade,
then downgrade, plus OpenJDK->Oracle migration, who knows :-)...
> ...assuming you are installing on Ubuntu? Please can you confirm? ...and
> which version?
Yes, the recommended one:
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.3 LTS"
> Does this issue occur immediately after installing Cassandra (i.e. without
> Clearwater) or does it only start once you've installed homestead/homer?
the -Xss issue seems specific to Cassandra and perhaps Oracle 1.7 JDK.
T.
--
Tommaso Cucinotta, Computer Engineer PhD
Researcher at Alcatel-Lucent Bell Laboratories
Blanchardstown Business & Technology Park
Dublin - Ireland
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