All,
Is anyone aware of a [distributed] Recommender system (i.e. amazon
recommendations) that uses cassandra as a back-end?
Thanks a lot
Carlos
client language options are found here:
> http://wiki.apache.org/cassandra/ClientOptions
>
> On Jun 10, 2011, at 9:58 PM, Carlos Sanchez wrote:
>
>> All,
>>
>> I was wondering if there are Cassandra python clients and which one would be
>> the best to use
>>
>> Thanks a lot,
>>
>> Carlos
>
All,
I was wondering if there are Cassandra python clients and which one would be
the best to use
Thanks a lot,
Carlos
All,
Could someone tell me where (what classes) or what library is Cassandra using
for its bloom filters?
Thanks
Carlos
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All,
Is there a good resource to learn about merkle trees and its implementation in
Cassandra? What classes should I be looking at.
Thx a lot
Carlos
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All,
Could I know what package or classes are used in Cassandra for secondary column
indices?
Thanks
Carlos
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All,
I was wondering if I could get some information (link / pdf) about the new
[column] indices in Cassandra for version 0.7
Thanks a lot,
Carlos
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Drew,
I was wondering if you care to share your map-reduce code
Thanks
Carlos
From: Drew Dahlke [drew.dah...@bronto.com]
Sent: Monday, June 28, 2010 7:17 AM
To: user@cassandra.apache.org
Subject: Re: Map Reduce support
The difference is noticeable but sm
Would there be any support for a KeyRange (start/end key) deletion in 0.7?
Carlos
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Jake,
I will be interested in this functionality
Carlos
From: Jake Luciani [jak...@gmail.com]
Sent: Friday, June 18, 2010 10:57 PM
To: user@cassandra.apache.org
Subject: Re: Lucandra issues
Hi Maxim,
Lucandra doesn't support numeric queries quite yet. A
at 11:04 AM, Carlos Sanchez
wrote:
> I have about a million rows (each row with 100 cols) of the form
> domain/!date/!id (e.g. gwm.com/!20100430/!CFRA4500) So I am interested in
> getting all the ids (all cols) for a particular domain/date (e.g.
> "gwm.ml.com/!20100430/!A&quo
I have about a million rows (each row with 100 cols) of the form
domain/!date/!id (e.g. gwm.com/!20100430/!CFRA4500) So I am interested in
getting all the ids (all cols) for a particular domain/date (e.g.
"gwm.ml.com/!20100430/!A" "gwm.ml.com/!20100430/!D"). I am looping in chunks of
6000 rows
om/p/concurrentlinkedhashmap/
On Tue, May 25, 2010 at 10:17 AM, Carlos Sanchez
mailto:carlos.sanc...@riskmetrics.com>> wrote:
Do anyone know if there are repositories for high-scale-lib & clhm-production
jars? Is the source available somewhere?
Thanks
Carlos
This email message and any attachments ar
Do anyone know if there are repositories for high-scale-lib & clhm-production
jars? Is the source available somewhere?
Thanks
Carlos
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may be
All,
Does anyone know of a program (series of classes) that can capture the key
distribution of the rows in a ColumnFamily, sort of a [sub] string-histogram.
Thanks,
Carlos
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maps
On Fri, Apr 23, 2010 at 1:22 PM, Carlos Sanchez
wrote:
> I will try to modify the code... what I like about Trove is that even for
> regular maps (non primitive) there are no Entry objects created so there are
> much less references to be gced
This could help, but how is itera
ress.py.)
>
> -Jonathan
>
> On Fri, Apr 23, 2010 at 2:50 PM, Carlos Sanchez
> wrote:
>> Jonathan,
>>
>> Have you thought of using Trove collections instead of regular java
>> collections (HashMap / HashSet) in Cassandra? Trove maps are faster and
>&g
Jonathan,
Have you thought of using Trove collections instead of regular java collections
(HashMap / HashSet) in Cassandra? Trove maps are faster and require less memory
Carlos
This email message and any attachments are for the sole use of the intended
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I have a curious question..
I am doing some testing where I insert 500 rows to a super column family and
then delete one row, I make sure the row was indeed deleted (NotFoundException
in the get call) and then I ran a get_range_slices and the row indeed returned.
The shutdown Cassandra and rest
, 2010 at 10:45 PM, Carlos Sanchez
wrote:
> All,
>
> Is there or will there be a feature to batch delete rows? (KeyRange delete?)
>
> Thanks
>
> Carlos
>
> This email message and any attachments are for the sole use of the intended
> recipients and may contain p
All,
Is there or will there be a feature to batch delete rows? (KeyRange delete?)
Thanks
Carlos
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I was wondering if I could have a bit more insight as why we are seeing
different insertion times between regular column families and super columns.
We have a group object (with its name) that may have a series of attributes
(name/value). There can be up a million group object and different grou
de
> is a gateway to do anything, anywhere in the cluster.
>
> On 2010-03-29 23:31, Carlos Sanchez wrote:
>> Would it be best then for the client to select the node to write to when
>> using OPP in order to evenly distributes the keys?
>>
>> On Mar 29, 201
nodes to be overworked.
>
> In other words, OPP vs. RP on a single node system should have no real effect.
>
> -Original Message-
> From: Carlos Sanchez
> Date: Mon, 29 Mar 2010 18:58:50
> To: user@cassandra.apache.org
> Subject: Write times
>
> Are writes on Orde
Are writes on OrderPreservingPartitioner always slower than RandomPartitioner?
Is the replication factor a 'factor' in the write times?
Thanks,
Carlos
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cassandra and
thrift) that aren't in a public repository. Any suggestion of to deal with it?
On Tue, Mar 23, 2010 at 12:58 PM, Carlos Sanchez
mailto:carlos.sanc...@riskmetrics.com>> wrote:
Ran,
Are you planning to submit hector to a maven reposito
Ran,
Are you planning to submit hector to a maven repository?
Carlos
From: Ran Tavory [ran...@gmail.com]
Sent: Tuesday, March 23, 2010 4:36 AM
To: user@cassandra.apache.org
Subject: Re: updates on hector, a java cassandra client
Download ready jars with a
@cassandra.apache.org
Subject: Re: Storing large blobs
My question would be how large is large? Perhaps you could compress the blobs
and then store them. But it depends on the answer to the first question.
Cheers
Avinash
On Wed, Mar 17, 2010 at 5:10 PM, Carlos Sanchez
mailto:carlos.sanc
Has anyone had experience storing large blobs in Cassandra? Is really Cassandra
tailored for large content?
Carlos
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