<doanduy...@gmail.com> wrote:
> You can't have more than 1 non-pk column from the base table as primary
> key column of the view. All is explained here:
> http://www.doanduyhai.com/blog/?p=1930
>
> On Wed, Feb 10, 2016 at 10:43 AM, Abdul Jabbar Azam <aja...@gmail.com>
> wr
Abdul Jabbar Azam
twitter: @ajazam
here:
> http://www.doanduyhai.com/blog/?p=1930
>
> On Wed, Feb 10, 2016 at 10:43 AM, Abdul Jabbar Azam <aja...@gmail.com>
> wrote:
>
>> Hello,
>>
>> I tried creating a material view using a composite partition key but I
>> got an error. I can't remember the error but it
Hello,
What do people do to test their cassandra client code? Do you
a) mock out the cassandra code
b) use a framework which simulates cassandra
c) actually use cassandra, perhaps inside docker
--
Regards
Abdul Jabbar Azam
twitter: @ajazam
andra.org/
>
> From: Abdul Jabbar Azam
> Reply-To: "user@cassandra.apache.org"
> Date: Tuesday, February 9, 2016 at 2:23 PM
> To: "user@cassandra.apache.org"
> Subject: cassandra client testing
>
> Hello,
>
> What do people do to test their cassandra clie
Engagement Engine
> Atlassian
>
> My pronoun is "they". <http://pronoun.is/they>
>
>
>
> On Tue, Feb 9, 2016 at 2:47 PM, Jeff Jirsa <jeff.ji...@crowdstrike.com>
> wrote:
>
>> http://www.scassandra.org/
>>
>> From: Abdul Jabbar A
; Essentially I am looking for all tips that will help shorten the learning
> curve.
>
> Thanks
> Regards,
> Akhil Mehra
>
--
Regards
Abdul Jabbar Azam
twitter: @ajazam
Hello,
You'll find this useful
http://www.slideshare.net/mobile/mmalone/working-with-dimensional-data-in-distributed-hash-tables
Its how simplegeo used geohashing and Cassandra for geolocation.
On Mon, 26 Jan 2015 15:48 SEGALIS Morgan msega...@gmail.com wrote:
Hi everyone,
I wanted to know
Hello,
Or you can have a look at akka http://www.akka.io for event processing and
use cassandra for persistence(Peters suggestion).
On Sat Jan 03 2015 at 11:59:45 AM Peter Lin wool...@gmail.com wrote:
It looks like you're using the wrong tool and architecture.
If the use case really needs
Hello,
I saw this earlier yesterday but didn't want to reply because I didn't know
what the cause was.
Basically I using wide rows with cassandra 1.x and was inserting data
constantly. After about 18 hours the JVM would crash with a dump file. For
some reason I removed the compaction throttling
of warning though with elastic search. It does not provide simple
linear scalability like cassandra, nor is it easy to setup for cross
datacentre operation.
Datastax enterprise has Solr integrated so you could use that
http://digbigdata.com/geospatial-search-cassandra-datastax-enterprise/
Jabbar Azam
to
think that the servers must be super robust. Personally I'm not sure if
that should be the case.
The node
Thanks
Jabbar Azam
On 8 November 2014 02:56, Plotnik, Alexey aplot...@rhonda.ru wrote:
Cassandra is a cluster itself, it's not necessary to have redundant each
node. Cassandra has
Hello Jack,
Some really good points. I never thought of issues with the JVM or OOM
issues.
Thanks
Jabbar Azam
On 8 November 2014 16:52, Jack Krupansky j...@basetechnology.com wrote:
About the only thing you can say is two specific points:
1. A more resilient node is great
no redundancy they are not taken seriously for production nodes.
They're not rack mount, which is a big no with respect to the IT department.
Thanks
Jabbar Azam
On 8 November 2014 12:31, Plotnik, Alexey aplot...@rhonda.ru wrote:
Let me speak from my heart. I maintenance 200+TB Cassandra cluster
Hello Eric,
You make a good point about resiliency being applied at a higher level in
the stack.
Thanks
Jabbar Azam
On 8 November 2014 14:24, Eric Stevens migh...@gmail.com wrote:
They do not use Raid10 on the node, they don't use dual power as well,
because it's not cheap in cluster
.
Thanks
Jabbar Azam
Hello,
I'm also using the Java driver. Its evolving the fastest and is simple to
use
Thanks
Jabbar Azam
On 2 Sep 2014 06:15, Gary Zhao garyz...@gmail.com wrote:
Thanks Jan. I decided to use Java driver directly. It's not hard to use.
On Sun, Aug 31, 2014 at 1:08 AM, Jan Algermissen
Yes, I never thought of that.
Thanks
Jabbar Azam
On 12 June 2014 19:45, Jeremy Jongsma jer...@barchart.com wrote:
That will not necessarily scale, and I wouldn't recommend it - your
backup node will need as much disk space as an entire replica of the
cluster data. For a cluster
In this use case you don't need the secondary index. Instead use Primary
key(partition_id, senttime)
Thanks
Jabbar Azam
On 12 Jun 2014 23:44, Roshan codeva...@gmail.com wrote:
Hi
Cassandra - 2.0.8
DataStax driver - 2.0.2
I have create a keyspace and a table with indexes like below
leave this problem for more intelligent people than me and
concentrate on the application logic, which can scale by adding or removing
application and front end servers.
Thanks for all your comments.
Thanks
Jabbar Azam
On 22 May 2014 19:55, Robert Coli rc...@eventbrite.com wrote:
On Wed, May 21
be interested to know whether people out there are autoscaling
cassandra on demand.
Thanks
Jabbar Azam
/articles/auto-scaling-on-the-google-cloud-platformand
how instances can be created and destroyed.
I
Thanks
Jabbar Azam
On 21 May 2014 13:09, Prem Yadav ipremya...@gmail.com wrote:
Hi Jabbar,
with vnodes, scaling up should not be a problem. You could just add a
machines with the cluster/seed
That sounds interesting. I was thinking of using coreos with docker
containers for the business logic, frontend and Cassandra. I'll also have a
look at cassandra-mesos
Thanks
Jabbar Azam
On 21 May 2014 14:04, Panagiotis Garefalakis panga...@gmail.com wrote:
I agree with Prem, but recently
and accurate
detail.
If your saving on hardware then you could think about using docker or
virtualisation , but you'll have problems with performance. A bit like the
problems you get when you have small instances at Amazon.
Thanks
Jabbar Azam
On 21 May 2014 19:07, Salih Kardan karda...@gmail.com
will have to
run nodetool to add and remove the nodes from the cluster and also the node
cleanup.
Disclaimer: this is not a production system but something Im experimenting
with in my own time.
Thanks
Jabbar Azam
On 21 May 2014 15:51, James Horey j...@opencore.io wrote:
If you're interested
Hello Ben,
I''m looking forward to reading the netflix links. Thanks :)
Thanks
Jabbar Azam
On 21 May 2014 18:08, Ben Bromhead b...@instaclustr.com wrote:
The mechanics for it are simple compared to figuring out when to scale,
especially when you want to be scaling before peak load on your
Thanks Aaron. I've mitigated this by removing the dependency on idempotent
counters. But its good to know the limitations of counters.
Thanks
Jabbar Azam
On 19 May 2014 08:36, Aaron Morton aa...@thelastpickle.com wrote:
Does anybody else use another technique for achieving this idempotency
Hello Techy Teck,
Couldn't find any evidence on the datastax website but found this
http://wiki.apache.org/cassandra/CassandraLimitations
which I believe is correct.
Thanks
Jabbar Azam
On 6 November 2013 20:19, Techy Teck comptechge...@gmail.com wrote:
We are using CQL table like
Forget. The text value can be upto 2GB in size, but in practice it will be
less.
Thanks
Jabbar Azam
On 6 November 2013 21:12, Jabbar Azam aja...@gmail.com wrote:
Hello Techy Teck,
Couldn't find any evidence on the datastax website but found this
http://wiki.apache.org/cassandra
http://www.youtube.com/playlist?list=PLqcm6qE9lgKJzVvwHprow9h7KMpb5hcUU
Thanks
Jabbar Azam
On 4 Jul 2013 18:17, S Ahmed sahmed1...@gmail.com wrote:
Hi,
Are the videos online anywhere for the 2013 summit?
Hello tony,
I couldnt reply earlier because I've been decorating over the weekend so
have been a bit busy.
Let me know what's happens.
Out of couriosity why are you using and not a cql3 native driver?
Thanks
Jabbar Azam
On 24 Jun 2013 00:32, Tony Anecito adanec...@yahoo.com wrote:
Hi Jabbar
/Netflix/astyanax/wiki/Getting-Started
Thanks
Jabbar Azam
On 24 June 2013 15:34, Tony Anecito adanec...@yahoo.com wrote:
Hi Jabbar,
I am using JDBC driver because almost no examples exist about what you
mention. Even most of the JDBC examples I find do not work because they are
incomplete
GC
collectors.
Bear in mind though that the OS will need memory, so will the row cache and
the filing system. Although memory usage will depend on the workload of
your system.
I'm sure you'll also get good advice from other members of the mailing list.
Thanks
Jabbar Azam
On 21 June 2013 18:49
Jabbar Azam
On 21 June 2013 21:29, Tony Anecito adanec...@yahoo.com wrote:
Hi All,
I am using jdbc driver and noticed that if I run the same query twice the
second time it is much faster.
I setup the row cache and column family cache and it not seem to make a
difference.
I am wondering how
Hello Joe,
I would use cqlsh and run table in there I'm not sure why you want
to run that from the driver!
Thanks
Jabbar Azam
On 9 June 2013 23:49, Joe Greenawalt joe.greenaw...@gmail.com wrote:
Hi, I was playing around with the datastax driver today, and I wanted to
call DESCRIBE
Oops I meant describe table ...
Thanks
Jabbar Azam
On 10 June 2013 00:16, Jabbar Azam aja...@gmail.com wrote:
Hello Joe,
I would use cqlsh and run table in there I'm not sure why you want
to run that from the driver!
Thanks
Jabbar Azam
On 9 June 2013 23:49, Joe Greenawalt
Hello Cem,
You can get a similar effect by specifying a TTL value for data you save to
a table. If the data becomes older than the TTL value then it will
automatically be deleted by C*
Thanks
Jabbar Azam
On 29 May 2013 17:01, cem cayiro...@gmail.com wrote:
Thank you very much for the fast
doing lots of inserts so switching off
compaction throttling was ok.
Thanks
Jabbar Azam
On 27 May 2013 04:29, John Watson j...@disqus.com wrote:
Having (2) 1.2.5 nodes constantly crashing due to OutOfHeap errors.
It always happens when the same large compaction is about to finish (they
re-run
I've read the roles once
then I can cache them.
Thanks
Jabbar Azam
I never thought about using a synthetic key, but in this instance with
about a dozen rows it's probably ok. Thanks for your great idea.
Where did you read about the synthetic key idea? I've not come across it
before.
Thanks
Jabbar Azam
On 4 May 2013 19:30, Dave Brosius dbros
Hello Sri,
As far as I know you can if name and age are part of your partition key and
timestamp is the cluster key e.g.
create table columnfamily (
name varchar,
age varchar,
tstamp timestamp,
partition key((name, age), tstamp)
);
Thanks
Jabbar Azam
On 2 May 2013 11:45
the blanks :)
Thanks
Jabbar Azam
On 2 May 2013 20:28, Daning Wang dan...@netseer.com wrote:
Hi all,
We are deploying Cassandra on two data centers. there is slower network
connection between data centers.
Looks casandra should use internal ip to communicate with nodes in the
same data
I already have thanks. I'll do the tests with the hardware arrives.
Thanks
Jabbar Azam
On 16 April 2013 22:27, aaron morton aa...@thelastpickle.com wrote:
Can't we use LCS?
Do some reading and some tests…
http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra
http
MySQL cluster also has the index in ram. So with lots of rows the ram
becomes a limiting factor.
That's what my colleague found and hence why were sticking with Cassandra.
On 16 Apr 2013 21:05, horschi hors...@gmail.com wrote:
Ah, I see, that makes sense. Have you got a source for the
I know the SSD's are a bit small but they should be enough for our
application. Out test data is 1.6 TB(including replication of rf=3). Can't
we use LCS? This will give us more space at the expensive of more I/O but
SSD's have loads of I/Os.
Thanks
Jabbar Azam
On 14 April 2013 20:20
Thanks Aaron.
Thanks
Jabbar Azam
On 14 April 2013 19:39, aaron morton aa...@thelastpickle.com wrote:
That's better.
The SSD size is a bit small, and be warned that you will want to leave
50Gb to 100GB free to allow room for compaction (using the default size
tiered).
On the ram side
With your example you can do an equality search with surname and city and
then use in with country
Eg. Select * from yourtable where surname=blah and city=blah blah and
country in (country1, country2)
Hope that helps
Jabbar Azam
On 13 Apr 2013 07:06, Gareth Collins gareth.o.coll...@gmail.com
?
I do realise the CPU is fairly low computational power but I'm going to
assume the system is going to be IO bound hence the RAM and SSD's.
Thanks
Jabbar Azam
That's my guess. My colleague is still looking at CPU's so I'm hoping he
can get quad core CPU's for the servers.
Thanks
Jabbar Azam
On 12 April 2013 16:48, Colin Blower cblo...@barracuda.com wrote:
If you have not seen it already, checkout the Netflix blog post on their
performance
the nodes in the cluster.
Thanks
Jabbar Azam
On 11 April 2013 14:13, Matthias Zeilinger matthias.zeilin...@bwinparty.com
wrote:
Hi,
** **
I would like to create big cluster for many applications.
Within this cluster I would like to separate the data for each
application, which can
Hello,
I don't know what pelops is. I'm not sure why you want two clusters. I
would have two clusters if I want to have data stored on totally separate
servers for perhaps security reasons.
If you are going to have the servers in one location then you might as well
have one cluster. You'll have
in
another part of the model.
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 25/03/2013, at 8:19 AM, Jabbar Azam aja...@gmail.com wrote:
Thanks Aaron. I have a hypothetical question.
Assume you have four
there are in
the cluster.
My next email will be the last in the thread. I thought the info might be
useful to other people in the community.
On 21 March 2013 21:59, Jabbar Azam aja...@gmail.com wrote:
nodetool cleanup command removes keys which can be deleted from the node
the command is run. So
40277
72 0122906 2896
0 1735
** **
** **
Thanks
Kanwar
** **
--
Thanks
Jabbar Azam
or https://github.com/synack/tablesnap to
get things off node.
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 23/03/2013, at 4:37 AM, Jabbar Azam aja...@gmail.com wrote:
Hello,
I've been experimenting
Jabbar Azam
not find the main class:
org.apache.cassandra.service.CassandraDaemon. Pr
ogram will exit.
--
Thanks
Jabbar Azam
the log4j ones.
Do I need to configure anything else on Winows ? I did not find any
Windows- specific installation/setup/startup instructions - if there are
such
documents somewhere, please let me know!
Thanks,
Marina
--
Thanks
Jabbar Azam
of my colleagues and now it's documented ;)*
*
*
*
On 22 March 2013 15:47, Jabbar Azam aja...@gmail.com wrote:
Viktor, you're right. I didn't get any errors on my windows console but
cassandra.yaml and log4j-server.properties need modifying.
On 22 March 2013 15:44, Viktor Jevdokimov
-topology.properties file.
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 21/03/2013, at 1:34 AM, Jabbar Azam aja...@gmail.com wrote:
I've added the node with a different IP address and after disabling the
firewall
Can I do a multiple node nodetool cleanup on my test cluster?
On 21 Mar 2013 17:12, Jabbar Azam aja...@gmail.com wrote:
All cassandra-topology.properties are the same.
The node add appears to be successful. I can see it using nodetool status.
I'm doing a node cleanup on the old nodes
nodetool cleanup command removes keys which can be deleted from the node
the command is run. So I'm assuming I can run nodetool cleanup on all the
old nodes in parallel. Wouldn't do this on a live cluster as it's I/O
intensive on each node.
On 21 March 2013 17:26, Jabbar Azam aja...@gmail.com
and restarted them. I also found I had
iptables switched on and couldn't understand why the wiped node couldn't
see the cluster. Not sure if I needed to change
cassandra-topology.properties file on the existing nodes.
On 19 March 2013 15:49, Jabbar Azam aja...@gmail.com wrote:
Do I use removenode
Hello,
Also have a look at
http://www.datastax.com/docs/1.2/install/recommended_settings
On 21 Mar 2013 00:06, S C as...@outlook.com wrote:
Apparently max user process was set very low on the machine.
How to check?
ulimit -u
Set it to unlimited /etc/security/limits.conf
* soft nprocs
to achieve
each step.
Can anybody help?
--
Thanks
Jabbar Azam
are in that token
range.
Dean
From: Jabbar Azam aja...@gmail.commailto:aja...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user@cassandra.apache.orgmailto:user@cassandra.apache.org
Date: Tuesday, March 19, 2013 8:51 AM
To: user@cassandra.apache.orgmailto:user
, it IS the replacement node.
Dean
From: Jabbar Azam aja...@gmail.commailto:aja...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user@cassandra.apache.orgmailto:user@cassandra.apache.org
Date: Tuesday, March 19, 2013 9:29 AM
To: user@cassandra.apache.orgmailto:user
luck.
2013/3/19 Hiller, Dean dean.hil...@nrel.gov
Since you cleared out that node, it IS the replacement node.
Dean
From: Jabbar Azam aja...@gmail.commailto:aja...@gmail.com
Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user@cassandra.apache.orgmailto:user
Hello,
If the live data centre disappears restoring the data from the backup is
going to take ages especially if the data is going from one data centre to
another, unless you have a high bandwidth connection between data centres
or you have a small amount of data.
Jabbar Azam
On 14 Mar 2013 14
sstables, and 6865 were spread across all four.
On Fri, Mar 1, 2013 at 11:07 AM, Jabbar Azam aja...@gmail.com wrote:
Hello,
I'm seeing compaction statistics which look like the following
INFO 17:03:09,216 Compacted 4 sstables to
[/var/lib/cassandra/data/studata/datapoints/studata
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