On Wednesday 22 of February 2012, Rishabh Agrawal wrote:
I have installed CQL drivers for python. When I try execute cqlsh I get
following error
cql-1.0.3$ cqlsh localhost 9160
(...)
File /usr/local/lib/python2.7/dist-packages/cql/cassandra/ttypes.py,
line 7, in module from thrift.Thrift
Arf, you'r right sorry.
I've fixed it (but it could take ~1 to get propagated to all apache mirrors).
--
SYlvain
On Wed, Feb 22, 2012 at 2:46 AM, Maki Watanabe watanabe.m...@gmail.com wrote:
The link is wrong.
Here are the platforms the data stax distro supports
http://www.datastax.com/products/community/platforms
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 22/02/2012, at 12:11 AM, Aditya Gupta wrote:
I am about to choose a linux distro
Thanks for the reply
I installed 0.8.0 drift package. But still problem persists.
-Original Message-
From: Mateusz Korniak [mailto:mateusz-li...@ant.gliwice.pl]
Sent: Wednesday, February 22, 2012 1:47 PM
To: user@cassandra.apache.org
Subject: Re: Doubt regarding CQL
On Wednesday 22 of
I need to iterate over all the rows in a column family stored with
RandomPartitioner.
When I reach the end of a key slice, I need to find the token of the last key
in order to ask for the next slice.
I saw in an old email that the token for a specific key can be recoveder through
I had to port that piece of code to C#, and it's just a few lines of code,
so just write your own. Here's the original so you can see what it does:
http://git-wip-us.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=src/java/org/apache/cassandra/utils/FBUtilities.java;hb=refs/heads/trunk
On Wed, Feb 22, 2012 at 8:47 PM, Flavio Baronti f.baro...@list-group.comwrote:
I need to iterate over all the rows in a column family stored with
RandomPartitioner.
When I reach the end of a key slice, I need to find the token of the last
key in order to ask for the next slice.
I saw in an
Il 2/22/2012 12:24 PM, Franc Carter ha scritto:
On Wed, Feb 22, 2012 at 8:47 PM, Flavio Baronti f.baro...@list-group.com
mailto:f.baro...@list-group.com wrote:
I need to iterate over all the rows in a column family stored with
RandomPartitioner.
When I reach the end of a key slice, I
From: Franc Carter franc.car...@sirca.org.au
To: user@cassandra.apache.org
Sent: Wednesday, February 22, 2012 9:24 AM
Subject: Re: List all keys with RandomPartitioner
On Wed, Feb 22, 2012 at 8:47 PM, Flavio Baronti f.baro...@list-group.com
wrote:
I need to
You can leave the end key empty.
1) Start with startkey =
2) Next iteration start with startkey = last key of the previous batch
3) Keep on going until you ran out of results
2012/2/22 Rafael Almeida almeida...@yahoo.com
From: Franc Carter
Rishabh-
It looks like you're not actually using the cqlsh that comes with Cassandra
1.0.7. Are you using an old version of the Python CQL driver? Old
versions of the driver had cqlsh bundled with it, instead of with Cassandra.
The 1.0.7 Debian/Ubuntu packages do not include cqlsh, because of
Hello everybody,
I'm being asked whether we can serve an object, which I assume is a
blob, of 750MB size?
I guess the real question is of how to chunk it and/or even it's
possible to chunk it.
Thanks!
Maxim
Chunking is a good idea, but you'll have to do it yourself. A few of the
columns in our application got quite large (maybe ~150MB) and the failure
mode was RPC timeout exceptions. Nodes couldn't always move that much data
across our data center interconnect in the default 10 seconds. With enough
In my opinion if you are busy site or application keep blobs out of the
database.
On Wed, Feb 22, 2012 at 9:37 AM, Dan Retzlaff dretzl...@gmail.com wrote:
Chunking is a good idea, but you'll have to do it yourself. A few of the
columns in our application got quite large (maybe ~150MB) and the
On Mon, Feb 20, 2012 at 9:42 PM, Franc Carter franc.car...@sirca.org.auwrote:
On Mon, Feb 20, 2012 at 12:00 PM, aaron morton aa...@thelastpickle.comwrote:
Aside from iostats..
nodetool cfstats will give you read and write latency for each CF. This
is the latency for the operation on each
Keep them where?
From: Mohit Anchlia mohitanch...@gmail.com
To: user@cassandra.apache.org
Cc: potek...@bnl.gov
Sent: Wednesday, February 22, 2012 3:44 PM
Subject: Re: Please advise -- 750MB object possible?
In my opinion if you are busy site or application
I would suggest you chunk them down into small pieces (~ 10-50MB) and just
fetch all the parts you need. A problem might be that if fetching one
fails, the whole blob is useless.
2012/2/22 Rafael Almeida almeida...@yahoo.com
Keep them where?
--
*From:* Mohit
Outside on the file system and a pointer to it in C*
On Wed, Feb 22, 2012 at 10:03 AM, Rafael Almeida almeida...@yahoo.comwrote:
Keep them where?
--
*From:* Mohit Anchlia mohitanch...@gmail.com
*To:* user@cassandra.apache.org
*Cc:* potek...@bnl.gov
*Sent:*
The idea was to provide redundancy, resilience, automatic load balancing
and automatic repairs. Going the way of the file system does not achieve
any of that.
Maxim
On 2/22/2012 1:34 PM, Mohit Anchlia wrote:
Outside on the file system and a pointer to it in C*
On Wed, Feb 22, 2012 at 10:03
unless you use distributed fs
On Wed, Feb 22, 2012 at 10:37 AM, Maxim Potekhin potek...@bnl.gov wrote:
The idea was to provide redundancy, resilience, automatic load balancing
and automatic repairs. Going the way of the file system does not achieve
any of that.
Maxim
On 2/22/2012 1:34
Maybe Storm is what you are looking for (as well as flume to get the messages
from the network)
http://www.datastax.com/events/cassandranyc2011/presentations/marz
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 22/02/2012, at 2:23 AM,
Rishabh could you give an example ? Was this using the CLI ?
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 22/02/2012, at 2:55 AM, Dave Brosius wrote:
What it's saying is if you define a KeySpace Foo and under it a ColumnFamily
In theory you could grab the commit log, you would then have to work with
internal cassandra structures to understand what is in there.
Otherwise do it at the app level or design it into your data model.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
On Wed, Feb 22, 2012 at 10:37 AM, Maxim Potekhin potek...@bnl.gov wrote:
The idea was to provide redundancy, resilience, automatic load balancing
and automatic repairs. Going the way of the file system does not achieve
any of that.
(Apologies for continuing slightly OT thread, but if people
I am going to be doing a trial run of my Pycon talk about setting up a
development instance of Cassandra and accessing it from Python (Pycassa
mostly, some thrift just to scare people off of using thrift) for a
Chicago Cassandra Meetup. Anyone in Chicago feel free to come by. The
talk is
We noticed that nodetool ring sometimes returns in 17-20 sec while it normally
runs in less than a sec. There were some compaction running when it happened.
Did compaction cause nodetool slowness? Anything else I should check?
time nodetool -h hostname ring
real 0m17.595s
user 0m0.339s
sys
Thank you so much, looks nice, I'll be looking into it.
On 2/22/2012 3:08 PM, Rob Coli wrote:
On Wed, Feb 22, 2012 at 10:37 AM, Maxim Potekhin potek...@bnl.gov
mailto:potek...@bnl.gov wrote:
The idea was to provide redundancy, resilience, automatic load
balancing
and automatic
Hi Maxim,
If you need to store Blobs, then BlobStores such as OpenStack Object
Store (aka Swift) should be better choise.
As far as I know, MogileFS (which is also a sort of BlobStore) has
scalability bottleneck - MySQL.
There are few reasons why BlobStores are better choise. In the
Hi Experts
Under massive write load what would be the best value for Cassandra *
flush_largest_memtables_at* setting? Yesterday I got an OOM exception in
one of our production Cassandra node under heavy write load within 5 minute
duration.
I change the above setting value to .45 and also change
I have been working on IronCount
(https://github.com/edwardcapriolo/IronCount/) which is designed to do
what you are talking about. Kafka takes care of the distributed
producer/consumer message queues and IronCount sets up custom
consumers to process those messages.
It might be what your are
Coolwww.countandra.org calls them cascaded counters and it will be also
based on Kafka.
/***
sent from my android...please pardon occasional typos as I respond @ the
speed of thought
/
On Feb 22, 2012 7:22 PM, Edward Capriolo edlinuxg...@gmail.com
Someone has backended mongo's gridfs into Cassandra but I can not find
it on Github atm
On Wed, Feb 22, 2012 at 6:51 PM, Rustam Aliyev rus...@code.az wrote:
Hi Maxim,
If you need to store Blobs, then BlobStores such as OpenStack Object Store
(aka Swift) should be better choise.
As far as I
all,
would i be better off (i'm in java land) with spawning a bunch of
threads that all add a single item to a mutator or a single thread that
adds a bunch of items to a mutator?
thanks,
deno
More precisely,
Lets say we have a CF with the following spec.
create column family Test
with comparator = 'CompositeType(UTF8Type,UTF8Type,UTF8Type)'
and key_validation_class = 'UTF8Type'
and default_validation_class = 'UTF8Type';
And I have columns such as:
Jack:Name:First -
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