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From Carlos Rolo <r...@pythian.com>
Subject Re: Ghost compaction process
Date Mon, 08 Jun 2015 09:48:55 GMT
HI,

Is it 2.0.14 or 2.1.4? If you are on 2.1.4 I would recommend an upgrade to
2.1.5 regardless of that issue.

>From the data you provide it is difficult to access what is the issue. If
you are running with RF=2 you can always add another node and kill that one
if that is the only node that shows that problem. With 40GB load is not a
big issue.

Regards,

Carlos Juzarte Rolo
Cassandra Consultant

Pythian - Love your data

rolo@pythian | Twitter: cjrolo | Linkedin: *linkedin.com/in/carlosjuzarterolo
<http://linkedin.com/in/carlosjuzarterolo>*
Mobile: +31 6 159 61 814 | Tel: +1 613 565 8696 x1649
www.pythian.com

On Mon, Jun 8, 2015 at 4:04 AM, Arturas Raizys <arturas@noantidot.com>
wrote:

> Hi,
>
> > Does `nodetool comactionstats` show nothing running as well? Also, for
> > posterity what are some details of the setup (C* version, etc.)?
>
> `nodetool comactionstats` does not return anything, it just waits.
> If I do enable DEBUG logging, I see this line poping up while executing
> `nodetool compactionstats` :
> DEBUG [RMI TCP Connection(1856)-127.0.0.1] 2015-06-08 09:29:46,043
> LeveledManifest.java:680 - Estimating [0, 0, 0, 0, 0, 0, 0, 0, 0]
> compactions to do for system.paxos
>
> I'm running Cassandra 2.1.14 with 7 node cluster. We're using small VM
> with 8GB of ram and SSD. Our data size per node with RF=2 is ~40GB. Load
> is ~ 1000 writes/second. Most of the data TTL is 2weeks.
>
>
> Cheers,
> Arturas
>

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