nd
> @aaronmorton
>
> Co-Founder & Principal Consultant
> Apache Cassandra Consulting
> http://www.thelastpickle.com
>
> On 13/05/2014, at 1:02 am, Krishna Chaitanya
> wrote:
>
> Hello,
> Thanks for the reply. Currently, each client is writing about 470
> New Zealand
> @aaronmorton
>
> Co-Founder & Principal Consultant
> Apache Cassandra Consulting
> http://www.thelastpickle.com
>
> On 11/05/2014, at 4:06 pm, Krishna Chaitanya
> wrote:
>
> Hello,
> I have an application that writes network packets to a Cassandr
Hello,
I have an application that writes network packets to a Cassandra cluster
from a number of client nodes. It uses the libQtCassandra library to access
Cassandra. On the homepage of libQtCassandra, its mentioned that switching
between keyspaces is costly when storing into Cassandra thereby affe
Hello,
Could you please suggest to me the best way to measure write-throughput in
Cassandra. I basically have an application that stores network packets to a
Cassandra cluster. Which is the best way to measure write performance,
especially write-throughput, in terms of number of packets stored int
ct 3k to 4k non counter writes per core per node, if you
> are not seeing that it may be configuration or the client.
>
> Hope that helps.
>
> -
> Aaron Morton
> New Zealand
> @aaronmorton
>
> Co-Founder & Principal Consultant
> Apache Cassandra Con
Hello,
I am a newbie to the Cassandra world and have a few doubts which I
wanted to clarify. I am having a software switch that stores netflow
packets into a shared memory segment and a daemon that reads that memory
segment and stores them into a 2-node Cassandra cluster. Currently, I am
sto
e Cassandra Consulting
> http://www.thelastpickle.com
>
> On 2/12/2013, at 3:33 am, Krishna Chaitanya
> wrote:
>
> Hi,
>
> The exception occurs on the clients. The server is fine. FYI, I dont do
> any reads, only writes to cassandra. I re-run the experiment everytime
> a
ing:
>
> http://www.opensourceconnections.com/2013/08/31/building-the-perfect-cassandra-test-environment/
>
>
>
>
> On Wed, Dec 4, 2013 at 11:05 AM, Krishna Chaitanya > wrote:
>
>> Hello,
>> I am currently using Cassandra-2.0.0 on OpenSuse for storing
>&
Hello,
I am currently using Cassandra-2.0.0 on OpenSuse for storing
netflow packets that are seen on my ethernet interface. I deliberately
tried to test Cassandra with heavy data and it ran fine for about 30 mins
after which it crashed with OutOfMemory error. I set up a two-node cluster
t
Hey why dont you try Datastax Opscenter? Its a cool Gui tool to
start/stop/manage your cluster(even remotely) . It also provides
administrative tools fr checking on the performance with vital statistics.
Definitely worth it.
On Dec 3, 2013 3:14 AM, "Kumar Ranjan" wrote:
> Hey Folks,
>
> I have b
Hi,
The exception occurs on the clients. The server is fine. FYI, I dont do any
reads, only writes to cassandra. I re-run the experiment everytime after
dropping all the created columnfamilies and key spaces.
Thanks...
On Sun, Dec 1, 2013 at 4:57 AM, Krishna Chaitanya wrote:
>
re getting stored very fast.
>
> On the client or the server ? Can you post the full error stack ?
>
> Currently using Cassandra 2.0.0 with libQtCassandra library.
>
> Please upgrade to 2.0.3.
>
> Cheers
>
> -
> Aaron Morton
> New Zealand
> @aaron
Hello,
I am a newbie to the Cassandra world. I would like to know if its
possible for two different nodes to write to a single Cassandra node. I
have a packet collector software which runs in two different systems. I
would like both of them to write the packets to a single node(same keyspace
and
Check if its an issue with permissions or broken links..
On Nov 6, 2013 11:17 AM, "Elias Ross" wrote:
>
> I'm seeing the following:
>
> Caused by: java.lang.RuntimeException: java.io.FileNotFoundException:
> /data05/rhq/data/rhq/six_hour_metrics/rhq-six_hour_metrics-ic-1-Data.db (No
> such file o
Hello,
I am newbie to the Cassandra world. I am currently using
Cassandra 2.0.0 with thrift 0.8.0 for storing netflow packets using
libQtCassandra library. Currently, I am generating about 1000 netflows/sec
and store\ing them into the database. The program is crashing with the an
exceptio
Hello,
I am new to the cassandra world and would like to know if it is
possible to open multiple namespaces from a single program. I am using the
libQtCassandra library. Is it possible to open multiple namespaces and
multiple tables and store different data into different contexts and tables
Hello,
I am currently doing a project in which I am supposed to store
netflow packets from a netflow collector into shared memory, read the
packets from there and store into cassandra. When I'm reading the data and
printing it, the output is something like this:-
Collecting new packet---nu
openjdk was the problem. I updated to the latest sun jdk and the issue was
fixed!!! Thanks...
On Mon, Sep 30, 2013 at 7:30 PM, Vivek Mishra wrote:
> Java version issue?
> Using sun jdk or open jdk?
>
> -Vivek
>
>
> On Tue, Oct 1, 2013 at 6:16 AM, Krishna Chaitanya
Hello,
I modified a network probe which collects network packets to
store them into cassandra. So there are many packets that are coming in, I
capture the packets in the program and store them into cassandra. I am
using libQtCassandra library. The program is crashing with segmentation
fa
sulting
> http://www.thelastpickle.com
>
> On 27/09/2013, at 8:27 PM, Krishna Chaitanya
> wrote:
>
> > Thank you...but cant we dynamically connect to any system instead of
> changing the .yaml file each time?? I want to take the input from the user
> regarding the ho
k listen_address in cassandra.yaml, change the localhost
> value by the ip of the machine and restart cassandra
>
>
> 2013/9/27 Krishna Chaitanya
>
>> Hello,
>> I am relatively new to cassandra. I am using a library called
>> libQtCassandra for accesing th
Hello,
I am relatively new to cassandra. I am using a library called
libQtCassandra for accesing the cassandra database from my c++ programs.
When I try to connect to the localhost cassandra , everything seems fine
but when I try to connect to a remote node on which cassandra is up and
ru
Hello,
--
Regards,
BNSK*.
*
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