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From: Jonathan Ellis <jbellis@gmail.com>
Date: Mon, 24 May 2010 10:00:19 -0500
Message-ID: <AANLkTim0EsVIixm3bWxunix1dKG2ZoVzUWmLGzT20609@mail.gmail.com>
Subject: Re: setcachecapacity is forgotten
To: user@cassandra.apache.org
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fixed for 0.6.2 in https://issues.apache.org/jira/browse/CASSANDRA-1079

On Mon, May 24, 2010 at 7:14 AM, Ran Tavory <rantav@gmail.com> wrote:
> I use nodetool to set cache capacity on a certain node but the settings a=
re
> "forgotten" after a few minutes.
> I run:
> $ nodetool -h localhost -p 9004 setcachecapacity outbrain_kvdb KvImpressi=
ons
> 10000000 1000000
> And then run nodetool cfstats=A0immediately=A0after and the settings are
> effective, I see the correct cache settings.
> However, after a few minutes, and I'm not sure what the trigger really is=
,
> the settings are forgotten and the host returns to the cache settings it =
had
> read when it was booted.
> I even updated storage-config,xml thinking maybe the server re-reads the
> value from the actual file, but as it seems, it looks like it's reading
> values stored in its memory when booted.
> Of course I can just restart the server so values from the file will take
> effect, but I don't want to start with a cold cache again, I want to
> increase cache size while it's hot.
> ...or am I using the tool incorrectly?
> I'm setting the cache capacity for only one host in the ring, not all hos=
ts.
> Thanks
>


--=20
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com