More details would help, like at least the query you're using to do
the insertion and that fails, as well as the exact error message.
--
Sylvain
On Mon, Jun 11, 2012 at 2:42 AM, Georg Köster wrote:
> Dear all,
>
> I'm really excited about Cassandra's peer-to-peer architecture and sorted
> values
Dear all
I have a Cassandra cluster with 2 nodes. I am using NetworkTopologyStrategy.
I was trying to increase the replication factor of keyspace in Cassandra to 2.
I did the following steps:
UPDATE KEYSPACE demo WITH strategy_options = {DC1:2,DC2:2}; on both the nodes
Then I ran the nodetool rep
I used Pelops and now I tried Astyanax and I get no details on the value
that cassandra is analyzing - only the composite key is in the error
message. If I insert a String instead of the Long (Long.toString(...) and
Long.valueOf()) my tests work but my column size is larger of course. I can
use it
It's not possible and it's not possible to make the change.
A write to the same key in multiple CF's is written as a single log record. So
it's not possible for difference CF's to use different strategies.
The closest thing is the durable_writes KS property which turns off the commit
log for
> Also when I run the command
> ./nodetool –h ip_address ring
> I found that both nodes ownership is 0 %. Please tell me how should I fix
> that.
It would be a lot easier to answer you question if you showed the output from
nodetool ring.
> UPDATE KEYSPACE demo WITH strategy_options = {DC1:2,DC
Hi Aaron,
Can you send me some particular link related to multi tenant research
Regards
Arshad
From: aaron morton [aa...@thelastpickle.com]
Sent: Thursday, June 07, 2012 3:34 PM
To: user@cassandra.apache.org
Subject: Re: how to configure cassandra as multi tenant
Google, man.
http://wiki.apache.org/cassandra/MultiTenant
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/about-multitenant-datamodel-td7575966.html
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/For-multi-tenant-is-it-good-to-have-a-key-space-for-each-tenant-td6
Hi Sasha,
Thanks for your reply. but what you send this is just to create keyspace
manually
using command prompt.how to create keyspace(Multi tenant) automatically
using cassandra API's.
Regards
Arshad
From: Sasha Dolgy [sdo...@gmail.com]
Sent: Monday, June 11,
Well, I don't see anything special in the logs. "Remove token" seems to
have done its job : accorging to the logs, old stored hints have been
deleted.
If I were you, I would connect (through JMX, with jconsole) to one of the
nodes that is sending messages to an old node, and would have a look a
Dear all
I had a 2 node cluster with replication factor set to 1. Then I changed the
replication factor to 2 and brought down one node so that only 1 node was up
and running. Then I ran my Hector code on the running node. But it gave me
Unavailable Exception. I also had a Thrift code which ran
Arshad,
I used google with the following query: apache cassandra multitenant
Suggest you do the same? As was mentioned earlier, there has been a lot of
discussion about this topic for the past year -- especially on this mailing
list. If you want to use Thrift or, to make your life easier, usin
Hi Sasha,
one more thing by using API's how to create keyspace and column family
dynamically. write now i have to create first through the command prompt then
that keyspace and column family used in API's.
Regards
Arshad
From: Sasha Dolgy [sdo...@gmail.com]
Sent
Thanks, I understand what you are telling me. Obviously deleting the column is
the proper way to do this in Cassandra.
What I was looking for, is some convenient wrapper on top of that which will do
it for me. Here is my scenario.
I have a function that takes a record to be saved in Cassandra (a
Le 11 juin 2012 à 12:12, Samuel CARRIERE a écrit :
>
> Well, I don't see anything special in the logs. "Remove token" seems to have
> done its job : accorging to the logs, old stored hints have been deleted.
>
> If I were you, I would connect (through JMX, with jconsole) to one of the
> node
I think the change log for 1.1.1 is missing CASSANDRA-4150 [1].
-- Omid
[1] https://issues.apache.org/jira/browse/CASSANDRA-4150
On Mon, Jun 4, 2012 at 9:52 PM, Sylvain Lebresne wrote:
> The Cassandra team is pleased to announce the release of Apache Cassandra
> version 1.1.1.
>
> Cassandra is
finally, thanks to the groovy jmx builder, it was not that hard.
Le 11 juin 2012 à 12:12, Samuel CARRIERE a écrit :
> If I were you, I would connect (through JMX, with jconsole) to one of the
> nodes that is sending messages to an old node, and would have a look at these
> MBean :
>- org.
Just installed cassandra 1.1.1 and run:
root@carlo-laptop:/tmp# cassandra-cli -h localhost
Connected to: "Test Cluster" on localhost/9160
Welcome to Cassandra CLI version 1.1.1
Type 'help;' or '?' for help.
Type 'quit;' or 'exit;' to quit.
[default@unknown] create keyspace accounts
... with
The property file snitch isn't used by default. Did you change your
cassandra.yaml to use PropertyFileSnitch so it reads
cassandra-topology.properties?
Also the formatting in your dc property file isn't right. It should be
'=:'. So:
127.0.0.1=dc-test:my-notebook
On Mon, Jun 11, 2012 at 1:49 PM,
I forgot to change cassandra.yaml to use PropertyFileSnitch AND
cassandra-topology syntax was incorrect. Thanks, Nick.
I don't know why I got no error in 1.0.8 with PropertyFileSnitch in
cassandra.yaml and wrong syntax in cassandra-topology.properties.
PS: I had to change JVM_OPTS in /etc/cassand
> I don't know why I got no error in 1.0.8 with PropertyFileSnitch in
> cassandra.yaml and wrong syntax in cassandra-topology.properties.
>
Not sure either.
> PS: I had to change JVM_OPTS in /etc/cassandra/cassandra-env.sh to use 160k
> instead 128k. This has not been fixed?
Still marked as unre
I solved this with creating a manual index with as column keys integers and
column values the uuid's of the results. Then run a slicequery to determine
the batch to fetch.
2012/6/11 Cyril Auburtin
> using 10 results maximum per page,
>
> to go directly to 14th page, there is no offset=141 possi
If my columns are ("k1:k2" => data1), ("k11:k32" => data211), ("k10:k211"
=> data91)
U mean transforming to ("1:k1:k2" => data1), ("2:k11:k32" => data211) but
I need the previous columns names to slice query on them
2012/6/11 R. Verlangen
> I solved this with creating a manual index with as co
Hi
We have some problem with Cassandra memory usage, we configure the JVM HEAP
6G, but after runing Cassandra for several hours (insert, update, delete).
The total memory used by Cassandra go up to 15G, which cause the OS low
memory.
So I wonder if it is normal to have so many memory used by cass
What is your Native heap size? And how are you measuring memory usage?
It woudl also hep to see the commandlien you are using to launch the JVM
On Mon, Jun 11, 2012 at 9:14 PM, Jason Tang wrote:
> Hi
>
> We have some problem with Cassandra memory usage, we configure the JVM
> HEAP 6G, but after
Btw. I suggest you spin up JConsole as it will give you much more detai
kon what your VM is actually doing.
On Mon, Jun 11, 2012 at 9:14 PM, Jason Tang wrote:
> Hi
>
> We have some problem with Cassandra memory usage, we configure the JVM
> HEAP 6G, but after runing Cassandra for several hour
See my post, I limit the HVM heap 6G, but actually Cassandra will use more
memory which is not calculated in JVM heap.
I use top to monitor total memory used by Cassandra.
=
-Xms6G -Xmx6G -Xmn1600M
2012/6/12 Jeffrey Kesselman
> Btw. I suggest you spin up JConsole a
Hi Cyril,
This may help.
http://architecturalatrocities.com/post/13918146722/implementing-column-pagination-in-cassandra
On Tue, Jun 12, 2012 at 3:18 AM, Cyril Auburtin wrote:
> If my columns are ("k1:k2" => data1), ("k11:k32" => data211), ("k10:k211"
> => data91)
>
> U mean transforming to ("
Row level deletion information is included in the row level isolation.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 5/06/2012, at 6:05 AM, Todd Burruss wrote:
> I don't think I'm being clear. I just was wondering if a "row delete" is
Check the documentation for you client or
http://www.datastax.com/docs/1.0/dml/using_cql
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 11/06/2012, at 11:25 PM, MOHD ARSHAD SALEEM wrote:
> Hi Sasha,
>
> one more thing by using API's how
Leonid,
Are you using some client for doing these operations..?
Hector is a java client which provides APIs for adding/deleting columns to
a column family in cassandra.
I don¹t think you really need to write your wrapper in this format- you
are restricting the number of columns it can use etc.I
Hi
I found some information of this issue
And seems we can have other strategy for data access to reduce mmap usage,
in order to use less memory.
But I didn't find the document to describe the parameters for Cassandra
1.x, is it a good way to use this parameter to reduce shared memory usage
and w
Dear all,
I am trying to query the system, specifically performing a GET for a
specific key, through Jmeter (or CURL)
and I am wondering what is the best pure RESTful API for the system (with
the lowest overhead) that I can use.
Thanks,
James
Hi!
I am using java and jersey.
Works fine,
*Tamar Fraenkel *
Senior Software Engineer, TOK Media
[image: Inline image 1]
ta...@tok-media.com
Tel: +972 2 6409736
Mob: +972 54 8356490
Fax: +972 2 5612956
On Tue, Jun 12, 2012 at 9:06 AM, James Pirz wrote:
> Dear all,
>
> I am trying to
Hi,
Thanks for the reply,
But can you tell me how do you form your request URLs,
I mean does Cassandra support a native RESTful api for talking to the
system, and if yes, on which specific port it is listening for the coming
requests ? and what does it expect for the format for the URLs ?
Thanks
Hi James,
No, Cassandra doesn't supports a RESTful api.
As Tamar points out, you have to supply this functionality yourself
specifically for your data model.
When designing your RESTful server application:
- consider using a RESTful framework (for example: Jersey)
- use a cassandra client to
https://github.com/hmsonline/virgil Brian O'Neill posted this a while ago
... sits on top of Cassandra to give you the RESTful API you want
Another option ... http://code.google.com/p/restish/
Or, you could simply build your own ...
On Tue, Jun 12, 2012 at 8:46 AM, Tom wrote:
> Hi James,
>
>
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