On Sat, Dec 18, 2010 at 11:02 PM, Kevin Irwig wrote:
> Hi,
>
> Say I have two processes on separate machines, and a Cassandra cluster over
> several machines. If the first process writes (insert) to a column while
> the
> second process reads (get / get_slice / get_range_slices / others?) from
>
On 19.12.10 03:05, Wayne wrote:
Rereading through everything again I am starting to wonder if the page
cache is being affected by compaction.
Oh yes ...
http://chbits.blogspot.com/2010/06/lucene-and-fadvisemadvise.html
https://issues.apache.org/jira/browse/CASSANDRA-1470
We have been heavily
> vic...@:~$ sudo ps aux | grep "cassandra"
> cassandra 11034 0.2 22.9 1107772 462764 ? Sl Dec17 6:13
> /usr/bin/java -ea -Xms128M -Xmx512M -XX:+UseParNewGC -XX:+UseConcMarkSweepGC
> -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=1
> -XX:CMSInitiatingOc
> Say I have two processes on separate machines, and a Cassandra cluster over
> several machines. If the first process writes (insert) to a column while the
> second process reads (get / get_slice / get_range_slices / others?) from that
> column (say the consistency level is QUORUM if that makes a
Thanks a lot, Peter.
K.
- Original Message
From: Peter Schuller
To: user@cassandra.apache.org
Sent: Mon, 20 December, 2010 12:05:17 AM
Subject: Re: atomicity
> Say I have two processes on separate machines, and a Cassandra cluster over
> several machines. If the first process writes (
> Rereading through everything again I am starting to wonder if the page cache
> is being affected by compaction. We have been heavily loading data for weeks
> and compaction is basically running non-stop. The manual compaction should
> be done some time tomorrow, so when totally caught up I will t
> How / what are you monitoring? Best practices someone?
I recently set up monitoring using the cassandra-munin-plugins
(https://github.com/jamesgolick/cassandra-munin-plugins). However, due
to various little details that wasn't too fun to integrate properly
with munin-node-configure and automated
mx4j? https://issues.apache.org/jira/browse/CASSANDRA-1068
On Sun, Dec 19, 2010 at 8:36 AM, Peter Schuller wrote:
> > How / what are you monitoring? Best practices someone?
>
> I recently set up monitoring using the cassandra-munin-plugins
> (https://github.com/jamesgolick/cassandra-munin-plugin
FYI, I just added an mx4j section to the bottom of this page
http://wiki.apache.org/cassandra/Operations
On Sun, Dec 19, 2010 at 4:30 PM, Jonathan Ellis wrote:
> mx4j? https://issues.apache.org/jira/browse/CASSANDRA-1068
>
>
> On Sun, Dec 19, 2010 at 8:36 AM, Peter Schuller <
> peter.schul...@i
Hi
I am using Cassandra 0.7 with PHPcassa on windows.
I run the cassandra server from command prompt and then run my php
script which include the phpcassa files, but my cassandra does not
respond to the phpcassa calls. I get errors like phpcassa could not
connect to cassandra server. My cassandra s
Another option is Evident ClearStone (
http://www.evidentsoftware.com/products/clearstone-for-cassandra/).
It collects the Cassandra metrics via JMX as well. As long as one node in
the cluster is configured, it'll find the rest of them. The UI is written in
Adobe Flex. The Cassandra management pac
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 wrote:
> FYI, I just added an mx4j section to the bottom
On Sat, 2010-12-18 at 23:56 +0200, Dorin Dragutoiu wrote:
>
http://goo.gl/xbyF2
--
Eric Evans
eev...@rackspace.com
I'm currently working to configure AppDynamics to monitor cassandra. It
does byte-code instrumentation, so there is an agent added to the
cassandra JVM, which gives the ability to capture latency for requests and
see where the bottleneck is coming from. We have been using it on our
other Java apps.
Mx4j is in process, same jvm, you just need to throw mx4j-tools.jar in
the lib before you 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 wrote:
> How does mx4j compare
I've not used the PHP client, but you can test connectivity to your cluster
using the cassandra-cli command line client in the bin/ folder.
Also check the ThriftAddress setting in your storage-config, this address is
the one that the server will be listening on. Set it to 0.0.0.0 to listen on
a
Forgot to say, 0.0.0.0 is not a good idea in production...
http://wiki.apache.org/cassandra/FAQ#cant_listen_on_ip_any
On 20/12/2010, at 9:12 AM, Aaron Morton wrote:
> I've not used the PHP client, but you can test connectivity to your cluster
> using the cassandra-cli command line client in th
You need to keep on trying till it works :)
http://wiki.apache.org/cassandra/FAQ#batch_mutate_atomic
Aaron
On 20/12/2010, at 2:18 AM, Kevin Irwig wrote:
> Thanks a lot, Peter.
> K.
>
>
>
> - Original Message
> From: Peter Schuller
> To: user@cassandra.apache.org
> Sent: Mon, 20 Dec
Hello Peter,
So more information on that problem :
Yes I am using this node with very few data, it is used to design requests
so I don't need a very large dataset.
I am running Apache Cassandra 0.6.6 on a Debian Stable, with java version
"1.6.0_22".
I recently restarted cassandra, thus I have thi
glad that helped, about the other issue i wont be able to assist you, im
using cassandra on C# with thrift directly, might be some missconfiguration
in your client
Nicolas Santini
On Fri, Dec 17, 2010 at 6:09 PM, Rajkumar Gupta wrote:
> Thanks a ton Nicolas! This helped..its working now :)
>
Sounds like you're not connecting to the right ip/port.
On Sun, Dec 19, 2010 at 10:10 AM, Rajkumar Gupta wrote:
> Hi
> I am using Cassandra 0.7 with PHPcassa on windows.
> I run the cassandra server from command prompt and then run my php
> script which include the phpcassa files, but my cassandr
On Sun, Dec 19, 2010 at 2:01 PM, Ran Tavory wrote:
> Mx4j is in process, same jvm, you just need to throw mx4j-tools.jar in
> the lib before you 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,
Can you share the code for run_column_family_stores.sh ?
On Sun, Dec 19, 2010 at 6:14 PM, Edward Capriolo wrote:
> On Sun, Dec 19, 2010 at 2:01 PM, Ran Tavory wrote:
> > Mx4j is in process, same jvm, you just need to throw mx4j-tools.jar in
> > the lib before you start Cassandra jmx-to-rest runs
I am able to connect to cassandra through cassandra-cli command at
command prompt but not through my php script. I also checked after
changing the rpc address to 0.0.0.0 in cassandra.yaml file but it
still does not work!
On Mon, Dec 20, 2010 at 1:47 AM, Aaron Morton wrote:
> Forgot to say, 0.0.0
It would probably help if you posted the code you are trying to use from
your php script. I don't know much about the php client but I now someone on
this list does.
On Sun, Dec 19, 2010 at 10:55 PM, Rajkumar Gupta wrote:
> I am able to connect to cassandra through cassandra-cli command at
> comm
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