ColumnFamilies.ReadCount

[Rene Kochen <re...@schange.com>]

Hi All,

I have a question about the ColumnFamilies.ReadCount counter.

I use:

- One node.
- Cassandra 1.0.10.
- No row cache.
- One table "Products" containing a few rows

If I use the cli command "list Products", the ColumnFamilies.ReadCount
counter does not increase (also via nodetool cfstats).
if I use the cli command "get Products('p1'), the counter does increase.

Why does it not increase when servicing a range operation?

Re: ColumnFamilies.ReadCount

[Rene Kochen <re...@emea.schange.com>]

Okay, thanks for the info! I was just trying to understand what I saw.

2012/8/20 Tyler Hobbs <ty...@datastax.com>:
>
>
> On Sun, Aug 19, 2012 at 6:27 AM, Rene Kochen <re...@schange.com>
> wrote:
>>
>>
>> Why does it not increase when servicing a range operation?
>
>
> It doesn't because, basically, it wasn't designed to.  Range queries aren't
> very commonly used with Cassandra, so I doubt that there has been any demand
> for it.  If that's something you'd like to see, feel free to open a ticket
> on jira for it: https://issues.apache.org/jira/browse/CASSANDRA
>
> --
> Tyler Hobbs
> DataStax
>

Re: ColumnFamilies.ReadCount

[Tyler Hobbs <ty...@datastax.com>]

On Sun, Aug 19, 2012 at 6:27 AM, Rene Kochen <re...@schange.com>wrote:

>
> Why does it not increase when servicing a range operation?


It doesn't because, basically, it wasn't designed to.  Range queries aren't
very commonly used with Cassandra, so I doubt that there has been any
demand for it.  If that's something you'd like to see, feel free to open a
ticket on jira for it: https://issues.apache.org/jira/browse/CASSANDRA

-- 
Tyler Hobbs
DataStax <http://datastax.com/>