On Thu, Jun 13, 2013 at 11:20 PM, Edward Capriolo wrote:
> CL.ONE requests for rows which do not exist are very fast.
>
> http://adrianotto.com/2010/08/dev-null-unlimited-scale/
>
Yep, /dev/null is a might force ;-)
I took a look at the YCSB source code and spotted the line of code
that caused o
Jun 13, 2013 at 10:47 AM, Markus Klems wrote:
>> One scaling strategy seems interesting but we don't
>> fully understand what is going on, yet. The strategy works like this:
>> add new nodes to a Cassandra cluster with "auto_bootstrap = false" to
>&
es at some point in time? Or can we simply be happy with the
performance improvement and leave it like this? Are we missing
something here; can you advise us to look at specific monitoring data
to better understand the observed effect?
Thanks,
Markus Klems
The wiki? https://github.com/Netflix/astyanax/wiki
On Tue, Jan 8, 2013 at 2:44 PM, Everton Lima wrote:
> Hi,
> Someone has or could indicate some good tutorial or book to learn Astyanax?
>
> Thanks
>
> --
> Everton Lima Aleixo
> Mestrando em Ciência da Computação pela UFG
> Programador no LUPA
>
Hi guys,
we are currently benchmarking various configurations of an EC2-based
Cassandra cluster. This is our current setup:
1) 8 nodes where each node is an m1.xlarge EC2 instance
2) Cassandra version 0.6.5
3) Replication Factor = 3
4) this delivers ~7K to 10K ops/sec with 50% GET and 50% INSERT
--
> From: markuskl...@gmail.com [mailto:markuskl...@gmail.com] On Behalf Of
> Markus Klems
> Sent: Saturday, February 19, 2011 10:53 AM
> To: user@cassandra.apache.org
> Subject: Re: Benchmarking Cassandra with YCSB
>
> Hi,
>
> we sorted out the performance problems and tu
sage during these tests?
>>
>>
>> On Tue, Feb 15, 2011 at 8:45 PM, Markus Klems wrote:
>>> Hi there,
>>>
>>> we are currently benchmarking a Cassandra 0.6.5 cluster with 3
>>> High-Mem Quadruple Extra Large EC2 nodes
>>> (http://aws.
Related question: Is it a good idea to specify ConsistencyLevels on a
per-operation basis? For example: Read ONE Write ALL would deliver
consistent read results, just like Read ALL Write ONE. However, if you
specify Read ONE Write QUORUM you cannot give such guarantees anymore.
Should there be (is
15.02.2011, at 20:59, Thibaut Britz wrote:
> Cassandra is very CPU hungry so you might be hitting a CPU bottleneck.
> What's your CPU usage during these tests?
>
>
> On Tue, Feb 15, 2011 at 8:45 PM, Markus Klems wrote:
>> Hi there,
>>
>> we are currently
onsider to port our modifications to a newer
Cassandra version...
Thanks,
Markus Klems
Karlsruhe Institute of Technology, Germany
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