In each family, both CF and SCF, data are grouped by rows.
Just to give an idea ...
Super Column Family Name{
Row 1 {
SuperColumn1 { Column1 Key: Column1 Value ... ColumnN Key:
ColumnN Value}
SuperColumn2 { Column1 Key: Column1 Value, ColumnN K
Thanks for the advise...
We are running on Windows, and I just added more memory to my system,
16G I will run the test again with 8G heap.
The load is continues, however, the CPU usage is around 40% with max of 70%.
As for cache, I am not using cache, because I am under the impression
that cach
Its a little bit different than what most people use it for, and that's
why we are trying to test it, to see if we can benefit from the speed of
writing/reading, scalability when and if we need it, and also the coast.
and part of the testing we are doing, is trying to see how many nodes do
we ne
> Hello,
> Environment - Cassandra 0.6.5 CentOS55 amazon ec2 image small.
>
> I am bringing in a new node to replace a dead node. Using new IP and
> deadNodeToken -1 as the InitialToken for the new node. The node has started
> bootstrapping and I can see the seed node is streaming to the
Hi,
I've been doing a lot of reading and I've one thing I'm not entirely
clear on - could someone clarify?
Q: Exactly at what point does indexing stop?
I'm trying to use cassandra to store log information that is both user
& time sensitive.
So I've a basic model like this:
detailed_log: { // s
It is the row key for one of your results. See the toString method on
RowImpl in the hector source.
Also, please feel free to direct any hector specific questions to:
hector-us...@googlegroups.com
On Thu, Nov 4, 2010 at 9:03 AM, Massimo Carro wrote:
> Hi at all,
>
> I try to make a getRange with
Hello,
Environment - Cassandra 0.6.5 CentOS55 amazon ec2 image small.
I am bringing in a new node to replace a dead node. Using new IP and
deadNodeToken -1 as the InitialToken for the new node. The node has started
bootstrapping and I can see the seed node is streaming to the new node.
Hi at all,
I try to make a getRange with Hector and it's ok.
But I don't understand why at the end of read I find a column like
[Row(eeg,ColumnSlice([]))]
Someone know what is "eeg" ?
Thks a lot!
Massimo Carro
www.liquida.it - www.liquida.com
Do you really need Cassandra to store just 80 GB data for just four
hours? It might be just me, but this sounds like quite far fetched
from normal Cassandra usage. Cassandra isn't happy unless you run
enough nodes to cover one or two node doing compaction (which hurts
the node performance). Are you
If you're bottle-necking on read I/O making proper use of Cassandras key
cache and row cache will improve things dramatically.
A little maths using the numbers you've provided tells me that you have
about 80GB of "hot" data (data valid in a 4 hour period). That's obviously
too much to directly cac
The load contains duplicate data which is created due to compaction.
Run 'cleanup' command with nodetool to those big nodes and you should
see the load drop to the actual usage.
- Garo
On Thu, Nov 4, 2010 at 11:08 AM, Mark Zitnik wrote:
> Hi All,
>
> I'm having a problem in spreading data acros
Hi All,
I'm having a problem in spreading data across the cluster.
my replication factor is 3, please advice why there is a big difference
between 10.11.40.239 and 10.11.40.161.
Thanks
Address Status Load
Range Ring
10.11.40.173 Up 220.58
> I am having time out errors while reading.
> I have 5 CFs but two CFs with high write/read.
> The data is organized in time series rows, in CF1 the new rows are read
> every 10 seconds and then the whole rows are deleted, While in CF2 the rows
> are read in different time range slices and eventua
13 matches
Mail list logo
