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Posted to user@cassandra.apache.org by Shay Assulin <SH...@il.ibm.com> on 2011/07/04 11:18:53 UTC
Re: Row cache
Hi,
The row cache capacity > 0.
after reading a row - the Caches.<KeySpace>.<CF>KeyCache.Requests attribute
gets incremented but the ColumnFamilies.<KeySpace>.<CF>.ReadCount attribute
remains zero and the Caches.<KeySpace>.<CF>RowCache.Size and Requsts
attributes remain zero as well.
It looks like the row-cache is disabled although the capacity is not zero.
In addition the ColumnFamilies.<KeySpace>.<CF>.ReadCount does not reflect
the fact that the row was fetched from SSTable.
beside CF.rows_cached parameter (in the yaml) - should i configure anything
else to enable the row-cache?
10x
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Re: Row cache
Posted by Shay Assulin <SH...@il.ibm.com>.
Hi,
The JConsole shows that the capacity > 0.
10x
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Re: Row cache
Posted by Daniel Doubleday <da...@gmx.net>.
Just to make sure:
The yaml doesn't matter. The cache config is stored in the system tables. Its the "CREATE ... WITH ..." stuff you did via cassandra-cli to create the CF.
In Jconsole you see that the cache capacity is > 0?
On Jul 4, 2011, at 11:18 AM, Shay Assulin wrote:
> Hi,
>
> The row cache capacity > 0.
>
>
> after reading a row - the Caches.<KeySpace>.<CF>KeyCache.Requests attribute
> gets incremented but the ColumnFamilies.<KeySpace>.<CF>.ReadCount attribute
> remains zero and the Caches.<KeySpace>.<CF>RowCache.Size and Requsts
> attributes remain zero as well.
>
> It looks like the row-cache is disabled although the capacity is not zero.
> In addition the ColumnFamilies.<KeySpace>.<CF>.ReadCount does not reflect
> the fact that the row was fetched from SSTable.
>
> beside CF.rows_cached parameter (in the yaml) - should i configure anything
> else to enable the row-cache?
>
>
> 10x
>
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Row-cache-tp6532887p6545416.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.