Hi Eldad,
Check out http://wiki.apache.org/cassandra/CloudConfig
There are a few ways listed there including a step-by-step guide.
Dave Viner
On Wed, Aug 3, 2011 at 7:49 AM, Eldad Yamin elda...@gmail.com wrote:
Thanks!
But I prefer to learn how to Install first - if you have any good
overloaded.
In practice, I've found it better for the client to have a pool of
connections, and then retry as needed to distinct nodes rather than use a
load balancer.
HTH
Dave Viner
On Tue, Apr 5, 2011 at 9:51 AM, A J s5a...@gmail.com wrote:
Can someone comment on this ? Or is the question
I saw this once when my servers ran out of file descriptors. This caused
totally weird problems.
Make sure all nodes in the cluster are listening on the gossip port (7000 by
default).
Also check out
http://www.datastax.com/docs/0.7/troubleshooting/index#view-of-ring-differs-between-some-nodesor
in a separate
region.
Taking it step-by-step will ensure that any issues are specific to the
region-to-region communication, rather than intra-zone connectivity or
cassandra cluster configuration.
Dave Viner
On Fri, Mar 18, 2011 at 8:34 AM, A J s5a...@gmail.com wrote:
Hello,
I am trying
From the us-west instance, are you able to connect to the us-east instance
using telnet on port 7000 and 9160?
If not, then you need to open those ports for communication (via your
Security Group)
Dave Viner
On Fri, Mar 18, 2011 at 10:20 AM, A J s5a...@gmail.com wrote:
Thats exactly what I am
for each user to build a Profile?
Are you on 0.7 or 0.6.x?
Dave Viner
On Tue, Mar 1, 2011 at 1:31 AM, Dave Gardner dave.gard...@visualdna.comwrote:
Dave
Tyler's answer already covers CFs etc..
We are using Cassandra to store user profile data for exactly the sort of
use case you describe. We
a piece-meal approach would be beneficial here.
Dave Viner
On Thu, Feb 24, 2011 at 6:11 AM, Daniel van Ham Colchete
daniel.colch...@gmail.com wrote:
Himanshi,
my bad, try this for iptables:
# SNAT outgoing connections
iptables -t nat -A POSTROUTING -p tcp --dport 7000 -d 175.41.143.192 -j
Try using the IP address, not the dns name in the cassandra.yaml.
If you can telnet from one to the other on port 7000, and both nodes have
the other node in their config, it should work.
Dave Viner
On Wed, Feb 23, 2011 at 1:43 AM, Himanshi Sharma himanshi.sha...@tcs.comwrote:
Ya they do
be interested in buying a car).
I don't have specifics as yet... just some general thoughts. But this feels
like a Cassandra type problem. (User profile can have lots of columns per
user, but the exact columns might differ from user to user... very scalable,
etc)
Thanks
Dave Viner
. I would first try with the actual public IP address (not the
Elastic IP). Once you get that to work, then shutdown the cluster, change
the listen_address to the EIP, boot up and try again.
Dave Viner
On Wed, Feb 23, 2011 at 8:54 PM, Himanshi Sharma himanshi.sha...@tcs.comwrote:
Hey Dave
in rpc address
field, Cassandra gives the same exception but if leave it blank then
Cassandra runs but again in the nodetool command with ring option it does'nt
show the node in another region.
Thanks,
Himanshi
-Dave Viner wrote: -
To: user@cassandra.apache.org
From: Dave Viner
Just a quick shout-out to the riptano folks and becoming part of/forming
DataStax!
Congrats!
be
fantastic.
Dave Viner
On Fri, Jan 21, 2011 at 1:01 PM, Aaron Morton aa...@thelastpickle.comwrote:
Yup, you can use diff ports and you can give them different cluster names
and different seed lists.
After you upgrade the second cluster partition the data should repair
across, either via RR
You can also use the apt-get repository version, which installs the startup
script. On http://wiki.apache.org/cassandra/CloudConfig, see the Cassandra
Basic Setup section. It applies to any debian based machine, not just cloud
instances.
HTH
Dave Viner
On Thu, Jan 20, 2011 at 9:11 AM, Donal
Perl using the thrift interface directly.
On Sat, Jan 15, 2011 at 6:10 AM, Daniel Lundin d...@eintr.org wrote:
python + pycassa
scala + Hector
On Fri, Jan 14, 2011 at 6:24 PM, Ertio Lew ertio...@gmail.com wrote:
Hey,
If you have a site in production environment or considering so, what
?
- tell me how many page views occurred between 12/01/2010 and 12/31/2010
from the US in the 9th hour of the day (in gmt)?
Time slicing and dimension slicing seems like it might be very challenging
(especially since the windows of time would not be known in advance).
Thanks
Dave Viner
.
Then look at the current row every hour to actually compile the numbers,
and store the count in the same Column Family
LogCF[hour-day-in-epoch-seconds][total] = x
where 'x' is the sum of the number of timeuuid columns in the row?
Is that what you're envisioning in Option A?
Thanks
Dave Viner
Since it's all pay-for-use, you could build your system on both, then do
whatever stress testing you want.
The cassandra part of your app should be unchanged between different cloud
providers.
Personally, I'm using EC2 and don't have any complaints.
Dave Viner
On Mon, Jan 3, 2011 at 3:49 PM
You can put a Cassandra cluster behind a load balancer. One thing to be
cautious of is the health check. Just because the node is listening on port
9160 doesn't mean that it's healthy to serve requests. It is required, but
not sufficient.
The real test is the JMX values.
Dave Viner
On Mon
How does mx4j compare with the earlier jmx-to-rest bridge listed in the
operations page:
JMX-to-REST bridge available at
http://code.google.com/p/polarrose-jmx-rest-bridge;
Thanks
Dave Viner
On Sun, Dec 19, 2010 at 7:01 AM, Ran Tavory ran...@gmail.com wrote:
FYI, I just added an mx4j section
start Cassandra jmx-to-rest runs in a separate jvm.
It also has a nice useful HTML interface that you can look into any
running host.
On Sunday, December 19, 2010, Dave Viner davevi...@gmail.com wrote:
How does mx4j compare with the earlier jmx-to-rest bridge listed in the
operations
and I'm sure he could make HBase bend to his will
at any point.
Dave Viner
On Sun, Nov 21, 2010 at 4:16 PM, Todd Lipcon t...@lipcon.org wrote:
On Sun, Nov 21, 2010 at 2:06 PM, Edward Ribeiro
edward.ribe...@gmail.comwrote:
Also I believe saying HBASE is consistent is not true. This can happen
Has anyone found solid step-by-step docs on how to raid0 the ephemeral disks
in ec2 for use by Cassandra?
On Fri, Oct 8, 2010 at 12:11 PM, Jason Horman jhor...@gmail.com wrote:
We are currently using EBS with 4 volumes striped with LVM. Wow, we
didn't realize you could raid the ephemeral
not pay inbound-outbound fees for the data
xfer.
HTH,
Dave Viner
On Thu, Oct 7, 2010 at 10:26 AM, B. Todd Burruss bburr...@real.com wrote:
if you are updating columns quite rapidly, you will scatter the columns
over many sstables as you update them over time. this means that a read
that I
understand what you're asking about (because I have similar ec2-related
thoughts). Let me know if this is an accurate summary.
Dave Viner
On Fri, Sep 17, 2010 at 7:41 AM, Jedd Rashbrooke
jedd.rashbro...@imagini.net wrote:
Howdi,
I've just landed in an experiment to get Cassandra
-
https://support.cloudkick.com/Cassandra_Checks.
Dave Viner
On Fri, Sep 10, 2010 at 8:31 PM, Edward Capriolo edlinuxg...@gmail.comwrote:
On Fri, Sep 10, 2010 at 7:29 PM, aaron morton aa...@thelastpickle.com
wrote:
Am going through the rather painful process of trying to monitor
cassandra using
the rotation. I'd be happy to help with
this, as I know how it works with haproxy and standard web servers or other
tcp servers. But, I'm not sure how to make it work with Cassandra, since,
as Ben points out, it can return valid tcp responses (that say
error-condition) on the standard port.
Dave Viner
I am a user of the perl api - so I'd like to lurk in case there are things
that can benefit both perl php.
Dave Viner
On Wed, Aug 18, 2010 at 1:35 PM, Gabriel Sosa sosagabr...@gmail.com wrote:
I would like to help with this too!
On Wed, Aug 18, 2010 at 5:15 PM, Bas Kok bakot...@gmail.com
;
undef $protocol;
undef $transport;
undef $socket;
}
HTH
Dave Viner
On Fri, Aug 6, 2010 at 7:45 AM, Adam Crain
adam.cr...@greenenergycorp.comwrote:
Thomas,
That was indeed the source of the problem. I naively assumed that the token
range would help me avoid retrieving duplicate rows
Is your code posted somewhere such that others could try it?
On Thu, Jul 29, 2010 at 5:57 AM, Miriam Allalouf
miriam.allal...@gmail.comwrote:
Hi,
Please, can someone help us with Munin??
Thanks,
Miriam
On Mon, Jul 26, 2010 at 1:58 PM, osishkin osishkin osish...@gmail.com
wrote:
Hi,
the
keys. Any suggestions on how I can properly iterate?
Thanks
Dave Viner
an
iteration returns no new keys, assume that all keys have been seen and exit.
- this also fails, since a particular result set can be full of duplicates,
but the iteration has not traversed the entire row-key spectrum.
Dave Viner
On Wed, Jul 28, 2010 at 3:48 PM, Rob Coli rc...@digg.com wrote
I've seen used several...
names of children of employees of the company
names of streets near office
names of diseases (lead to very hard to spell names after a while, but was
quite educational for most developers)
names of characters from famous books (e.g., lord of the rings, asimov
novels,
the new async Thrift client in Java for inspiration:
http://blog.rapleaf.com/dev/2010/06/23/fully-async-thrift-client-in-java/
Or, even better, port the Thrift async client to work for python and other
languages.
Dave Viner
On Tue, Jul 27, 2010 at 8:44 AM, Peter Schuller peter.schul...@infidyne.com
Yes... if you're using debian cassandra you can do:
/etc/init.d/cassandra stop
On Mon, Jul 26, 2010 at 8:05 AM, Lee Parker l...@socialagency.com wrote:
Which debian/ubuntu packages are you using? I am using the ones that are
maintained by Eric Evans and the init.d script stops the server
AFAIK, atomic increments are not available. There recently has been quite a
bit of discussion about them. So, you might search the archives.
Dave Viner
On Mon, Jul 26, 2010 at 7:02 PM, Mark static.void@gmail.com wrote:
On 7/26/10 6:06 PM, Dave Viner wrote:
I'd love to hear other's
.
You can also use rackaware-ness in EC2. Just add in the PropertyFile
endpoint and put your rack file in /etc/cassandra/rack.properties.
Dave Viner
On Thu, Jul 22, 2010 at 10:08 AM, Allan Carroll alla...@gmail.com wrote:
Hi all,
I'm setting up a new cluster on EC2 for the first time
Added: http://wiki.apache.org/cassandra/StorageConfiguration
On Mon, Jul 19, 2010 at 2:55 AM, Dimitry Lvovsky dimi...@reviewpro.comwrote:
I think it would be a good idea to add a bit more explanation
storage-conf.xml/wiki regarding the replication factor. It caused some
confusion until we
, but perhaps they have something
similar?
This feels like the kind of problem that might be easier for someone else to
setup and quickly test. (The beauty of the virtual server - quick setup and
quick tear down)
Dave Viner
On Mon, Jul 19, 2010 at 10:24 AM, Peter Schuller
peter.schul...@infidyne.com
universal. Cassandra is eventually
consistent. So atomic increment doesn't really work in the eventual
world. But, more precisely, one can add, update, change, modify, delete
rows, columns, and values at any time from any node.
Also sorting happens on insert time
Yes, I believe this is true.
Dave
I haven't used ELB, but I've setup HAProxy to do it... appears to work well
so far.
Dave Viner
On Tue, Jul 13, 2010 at 3:30 PM, Brian Helfrich helfrich9...@gmail.comwrote:
Hi, has anyone been able to load balance a Cassandra cluster with an AWS
Elastic Load Balancer? I've setup an ELB
choosing. According to
http://wiki.apache.org/thrift/, Thrift has generators for C++, C#, Erlang,
Haskell, Java, Objective C/Cocoa, OCaml, Perl, PHP, Python, Ruby, and
Squeak
HTH
Dave Viner
On Tue, Jul 13, 2010 at 6:05 PM, GH gavan.h...@gmail.com wrote:
To be honest I do not know how to regenerate
://www.mail-archive.com/user@cassandra.apache.org/msg02498.html
HTH
Dave Viner
On Wed, Jul 7, 2010 at 11:39 PM, Peter Schuller peter.schul...@infidyne.com
wrote:
If I want to add a new Keyspace, does it mean I have to distribute my
storage-conf.xml to whole nodes? and restart whole nodes?
I
not yet proven to myself that this is accurate, but it definitely stops
the error messages and , from looking at the code, seems like it should
work.
Is this correct?
Thanks
Dave Viner
On Wed, Jul 7, 2010 at 6:22 PM, Eric Evans eev...@rackspace.com wrote:
Let's move this to the user@ list
?
(That is, bring up a new node, copy the backed up files from the
crashed node onto the new node, then have the new node join the
cluster?)
Thanks
Dave Viner
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