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From Tamar Fraenkel <ta...@tok-media.com>
Subject Re: cassandra key cache question
Date Mon, 01 Oct 2012 19:01:49 GMT
Created https://issues.apache.org/jira/browse/CASSANDRA-4742
Any clue regarding the first question in this thread (key cache > number of
keys in CF, and not many deletes on that CF)?

Thanks,

*Tamar Fraenkel *
Senior Software Engineer, TOK Media

[image: Inline image 1]

tamar@tok-media.com
Tel:   +972 2 6409736
Mob:  +972 54 8356490
Fax:   +972 2 5612956





On Mon, Oct 1, 2012 at 2:28 AM, aaron morton <aaron@thelastpickle.com>wrote:

> I had a quick look at the code (1.1X) and could not see a facility to
> purge dropped cf's from key or row caches.
>
> Could you create a ticket on
> https://issues.apache.org/jira/browse/CASSANDRA ?
>
> Cheers
>
>   -----------------
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 27/09/2012, at 9:58 PM, Tamar Fraenkel <tamar@tok-media.com> wrote:
>
> Hi!
>
> One more question:
> I have couple of dropped column families, and in the JMX console I don't
> see them under org.apache.cassandra.db.ColumnFamilies, *BUT *I do see
> them under org.apache.cassandra.db.Caches, and the cache is not empty!
> Does it mean that Cassandra still keep memory busy doing caching for a
> non-existing column family? If so, how do I remove those caches?
>
> Thanks!
>
> *Tamar Fraenkel *
> Senior Software Engineer, TOK Media
>
> <tokLogo.png>
>
>
> tamar@tok-media.com
> Tel:   +972 2 6409736
> Mob:  +972 54 8356490
> Fax:   +972 2 5612956
>
>
>
>
>
> On Thu, Sep 27, 2012 at 11:45 AM, Tamar Fraenkel <tamar@tok-media.com>wrote:
>
>> Hi!
>> Is it possible that in JMX and cfstats the Key cache size is much bigger
>> than the number of keys in the CF?
>> Thanks,
>>
>> *Tamar Fraenkel *
>> Senior Software Engineer, TOK Media
>>
>> <tokLogo.png>
>>
>>
>> tamar@tok-media.com
>> Tel:   +972 2 6409736
>> Mob:  +972 54 8356490
>> Fax:   +972 2 5612956
>>
>>
>>
>>
>
>

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