> As said by Jonathan, SimpleCassie and Pandra are both based on Thrift.. I
> think a Cassandra upgrade will require an upgrade of Thrift classes of high
> level clients too. Am I right ?
This is right but impact on these libraries isn't significant unless a
Thrift API dependency is quickly depre
Benoit,
Thanks, that helped. I should have checked that one out before.
---
Gautam
On Fri, Apr 2, 2010 at 10:16 AM, Benoit Perroud wrote:
> A way to read all the db without having an OOM is to limit the amount
> of rows to be returned, and to iterate over the query, the starting
> key being the
Hullo.
Think I got a bug in Cassandra. Do you also think it's a bug?
It should be noted that I experience this bug when using cassandra through
thrift's php api (the low-level one generated by thrift, not some high-level
from the cassandra wiki).
It happens when i insert a supercolumn (with a si
http://github.com/b/cookbooks/tree/master/cassandra/
On Fri, Apr 2, 2010 at 4:49 PM, Masood Mortazavi
wrote:
>
> Is there a ready recipe for deploying a Cassandra cluster in AWS? ... (Seeds
> need some "fixed" IP addresses.)
>
> Regards,
> - m.
>
>
Is there a ready recipe for deploying a Cassandra cluster in AWS? ... (Seeds
need some "fixed" IP addresses.)
Regards,
- m.
I'm running a test to write 30 million columns (700bytes each) to Cassandra:
the process ran smoothly for about 20mil then the heap usage suddenly jumped
from 2GB to 3GB which is the up limit of JVM, --from this point Cassandra
will freeze for long time (terrible latency, no response to nodetool th
+1
On Fri, Apr 2, 2010 at 3:49 PM, Jonathan Ellis wrote:
> Ah, right. That's confusing for everyone. I think the best solution
> there is to just get
> http://issues.apache.org/jira/browse/CASSANDRA-579 done so it can
> start streaming immediately.
>
> On Fri, Apr 2, 2010 at 5:45 PM, Dan Di Sp
I agree. That would have other good side-effects, like minimizing
shooting yourself in the foot, for new folks.
On Fri, Apr 2, 2010 at 3:49 PM, Jonathan Ellis wrote:
> Ah, right. That's confusing for everyone. I think the best solution
> there is to just get
> http://issues.apache.org/jira/bro
Ah, right. That's confusing for everyone. I think the best solution
there is to just get
http://issues.apache.org/jira/browse/CASSANDRA-579 done so it can
start streaming immediately.
On Fri, Apr 2, 2010 at 5:45 PM, Dan Di Spaltro wrote:
> It did once it was actually done anti-compacting. The
It did once it was actually done anti-compacting. The biggest
question-mark (for us) was, what was happening during the
anti-compaction phase.
On Fri, Apr 2, 2010 at 3:39 PM, Jonathan Ellis wrote:
> Great, glad it worked.
>
> Sounds like we do have a bug though if the destination node never
> sh
Great, glad it worked.
Sounds like we do have a bug though if the destination node never
showed anything in Streaming mbean. :(
On Fri, Apr 2, 2010 at 5:11 PM, Dan Di Spaltro wrote:
> To close the loop on this, the node finished bootstrapping. The
> source node rebooting definitely halted the p
To close the loop on this, the node finished bootstrapping. The
source node rebooting definitely halted the process.
Visibility-wise, watching the anti-compactions is the best way to tell
how much progress is being made on the bootstrapping process. The
CompactionManager mbean gives you insight
I've written one here as a Drupal module, but it isn't very Drupal-specific:
http://bazaar.launchpad.net/~davidstrauss/pressflow/cassandra-votingapi/files/head:/sites/all/modules/cassandra/
I think my interface is a little prettier than SimpleCassie. You can see it in
action in the test suite
Peter, I agree with you, but sometimes choice can be very easy, if a tool
offers real advantages ...
During several weeks, I have thought that choice could be : low level
(thrift) or high level (pandra) as described on Cassandra Wiki..
Today, I discovered that SimpleCassie exists ... (I especi
To further complicate matters,
when I read only from cassdb1, I can check about 100/second/thread (40
threads)
when I read only from cassdb2, I can check about 50/second/thread (40 threads)
when I read only from cassdb3, I can check about 50/second/thread (40 threads)
This is with a consist
I got the idea for this from:
http://wiki.apache.org/cassandra/StorageConfiguration
I put my keyspace setup on a webserver, and I pull it into the config like this:
storage-conf.xml starts with:
http://cassandraconfig /seeds.xml">
http://cassandraconfig /autobootstrap.xml">
http://cassandracon
I have a 3 node cassandra cluster I'm trying to work with:
All three machines are about the same:
6-8GB per machine (fastest machine has 8GB, JavaVM limited to 5GB)
separate spindle for cassandra data and commit log
I wrote ~7 Million items to Cassandra, now, I'm trying to read them back, the
o
Questions like "What is the best ___?" that have subjective answers
are rarely simple.
I've tried various clients and I'd just recommend trying a few out and
getting involved win the projects. Some may have adavtnages of ease of
use while others may be more flexible or have features such as
connec
Yes.
On Fri, Apr 2, 2010 at 10:35 AM, Ryan King wrote:
> On Thu, Apr 1, 2010 at 8:37 PM, James Golick
> wrote:
> > Well, folks, I'm feeling a little stupid right now (adding to the injury
> > inflicted by one Mr. Stump :-P).
> > So, here's the story. The cache hit rate is up around 97% now. The
On Thu, Apr 1, 2010 at 8:37 PM, James Golick wrote:
> Well, folks, I'm feeling a little stupid right now (adding to the injury
> inflicted by one Mr. Stump :-P).
> So, here's the story. The cache hit rate is up around 97% now. The ruby code
> is down to around 20-25ms to multiget the 20 rows. I di
You need Thrift for any of the others.
On Fri, Apr 2, 2010 at 11:48 AM, yaw wrote:
> Hi all,
> just a (simple ?) question for today :
>
> What is the best client for Cassandra ?
>
> - Thrift (need to build compiler first)
> - Pandra (seems not updated)
> - SimpleCassie (just discovered it few mi
Hi all,
just a (simple ?) question for today :
What is the best client for Cassandra ?
- Thrift (need to build compiler first)
- Pandra (seems not updated)
- SimpleCassie (just discovered it few minutes ago)
Is there any other PHP client ?
If Cassandra is upgraded (0.5 to 0.6) , I suppose they
Greetings!
Content management systems usually have complex sort operations, how would
this be best handled with Cassandra?
Is the only way to handle this type of situation to build indexes for each
and every sort?
example model:
Content: {
contentID: {
title: "this is a title",
Correct. One node at a time, in rolling fashion. As long as the
config files are not drastically different (you isolate your changes
to the Keyspaces), you will not have a problem.
Gary.
On Fri, Apr 2, 2010 at 09:54, yaw wrote:
> Hi all,
> this tells us to stop and start Cassandra ...
> I hope
On Fri, Apr 2, 2010 at 10:50 AM, Brian Hawkins wrote:
> What pieces of data make up the token that determines on what node the data
> is placed?
The row key.
> Specifically are all the columns placed on the same node? What about super
> columns, are they all placed on the same node?
Yes and ye
Hi all,
this tells us to stop and start Cassandra ...
I hope we are not asked to stop whole cluster ... Can we proceed node
after node ?
( But how cluster could handle different config.xml files ?)
2010/4/2 Gary Dusbabek
> AJ,
>
> The wiki gives an outline of how to do this:
> http://wiki
What pieces of data make up the token that determines on what node the data
is placed?
Specifically are all the columns placed on the same node? What about super
columns, are they all placed on the same node?
Thanks
Brian
On Thu, 2010-03-25 at 15:13 -0700, Chris Goffinet wrote:
> As promised, here is the official invite to register for the hackathon
> in SF. The event starts at 6:30pm on April 22nd.
>
>
> http://cassandrahackathon.eventbrite.com/
It looks like there is also a workshop on Big Data at the Computer
No, we use SimpleCassie (
http://code.google.com/p/simpletools-php/wiki/SimpleCassie) as client api.
We just run 8 scripts from 8 console at one time. They connect to server via
host:port
2010/4/2 Jonathan Ellis
> Are you using a thrift connection object from more than one thread?
>
> On Fri,
Are you using a thrift connection object from more than one thread?
On Fri, Apr 2, 2010 at 9:49 AM, Sokolov Evgeniy wrote:
> Hello! Can you help me? We test cassandra and got strange results. We
> started cassandra on one server with 2GB RAM, limit memory for cassandra to
> 512Mb and set 1 millio
Is the notion here that you'd run all writes/reads through that node
and let it decide where to get the data from?
I've been working on a C# client library and I've been picking a node
at random from the cluster and letting it figure things out. Would a
setup like this be better? Keep all the tr
Hello! Can you help me? We test cassandra and got strange results. We
started cassandra on one server with 2GB RAM, limit memory for cassandra to
512Mb and set 1 million simple records (160 byte length). First, when we
store data throught 8 scripts from another server, we got several exceptions
lin
A way to read all the db without having an OOM is to limit the amount
of rows to be returned, and to iterate over the query, the starting
key being the last returned key. Note that doing that way the first
key of the next iteration is the same as the last key of the preivous
iteration.
The warning
I call the get_range_slice method in Java to get the list of all keys
in Cassandra db. The db is pretty small, about 1.3GB on disk. I
received the following error on the server:
"java.lang.OutOfMemoryError: Requested array size exceeds VM limit"
I changed the JVM size from 1 GB to 2 GB in
cassand
On Fri, Apr 2, 2010 at 12:46 PM, Shuge Lee wrote:
> For example:
> user['lee'] = {
> 'name': 'lee',
> 'age'; '21',
> 'girls': ['java', 'actionscript', 'python'],
> }
> how to store above in Apache Cassndra ?
check what a SuperColumn is in the wiki
--
blog en: http://www.riffraff.inf
AJ,
The wiki gives an outline of how to do this:
http://wiki.apache.org/cassandra/FAQ#modify_cf_config
Gary
On Thu, Apr 1, 2010 at 23:18, AJ Chen wrote:
> when adding/changing a column to a column family for existing data in
> cassandra, what's a good way to do it?
> thanks,
> -aj--
> AJ Chen,
For example:
user['lee'] = {
'name': 'lee',
'age'; '21',
'girls': ['java', 'actionscript', 'python'],
}
how to store above in Apache Cassndra ?
--
Shuge Lee | Lee Li | 李蠡
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